IVGCVSW-2454 Refactor ArmNN to support pluggable backends from a separate

code base

 * Made the virtual functions in ILayerSupport.hpp pure
 * Created a LayerSupportBase class with the default implementation of
   the interface
 * Made the backend layer support classes inherit from the base
   class, instead of directly from the interface
 * Refactored the profiler and the profiling event classes to use
   the BackendId instead of the Compute
 * Implemented a proper MemCopy support method
 * Changed Compute to BackendId in the profiling API and objects
 * Removed static references to pluggable backends

!android-nn-driver:492

Change-Id: Id6332b5f48c980819e0a09adc818d1effd057296

1 files changed, 48 insertions, 42 deletions

diff --git a/include/armnn/ILayerSupport.hpp b/include/armnn/ILayerSupport.hpp
index af38b07f39..bba344975a 100644
--- a/include/armnn/ILayerSupport.hpp
+++ b/include/armnn/ILayerSupport.hpp
@@ -25,12 +25,12 @@ public:
     virtual bool IsActivationSupported(const TensorInfo& input,
                                        const TensorInfo& output,
                                        const ActivationDescriptor& descriptor,
-                                       Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                       Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsAdditionSupported(const TensorInfo& input0,
                                      const TensorInfo& input1,
                                      const TensorInfo& output,
-                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsBatchNormalizationSupported(const TensorInfo& input,
                                                const TensorInfo& output,
@@ -39,75 +39,76 @@ public:
                                                const TensorInfo& beta,
                                                const TensorInfo& gamma,
                                                const BatchNormalizationDescriptor& descriptor,
-                                               Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                               Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsBatchToSpaceNdSupported(const TensorInfo& input,
                                            const TensorInfo& output,
                                            const BatchToSpaceNdDescriptor& descriptor,
-                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsConstantSupported(const TensorInfo& output,
-                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsConvertFp16ToFp32Supported(const TensorInfo& input,
                                               const TensorInfo& output,
-                                              Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                              Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsConvertFp32ToFp16Supported(const TensorInfo& input,
                                               const TensorInfo& output,
-                                              Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                              Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsConvolution2dSupported(const TensorInfo& input,
                                           const TensorInfo& output,
                                           const Convolution2dDescriptor& descriptor,
                                           const TensorInfo& weights,
                                           const Optional<TensorInfo>& biases,
-                                          Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                          Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsDebugSupported(const TensorInfo& input,
                                   const TensorInfo& output,
                                   const DebugDescriptor& descriptor,
-                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
-    virtual bool IsDepthwiseConvolutionSupported(const TensorInfo& input,
-                                                 const TensorInfo& output,
-                                                 const DepthwiseConvolution2dDescriptor& descriptor,
-                                                 const TensorInfo& weights,
-                                                 const Optional<TensorInfo>& biases,
-                                                 Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+    virtual bool IsDepthwiseConvolutionSupported(
+                     const TensorInfo& input,
+                     const TensorInfo& output,
+                     const DepthwiseConvolution2dDescriptor& descriptor,
+                     const TensorInfo& weights,
+                     const Optional<TensorInfo>& biases,
+                     Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsDivisionSupported(const TensorInfo& input0,
                                      const TensorInfo& input1,
                                      const TensorInfo& output,
-                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsEqualSupported(const TensorInfo& input0,
                                   const TensorInfo& input1,
                                   const TensorInfo& output,
-                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsFakeQuantizationSupported(const TensorInfo& input,
                                              const FakeQuantizationDescriptor& descriptor,
-                                             Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                             Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsFloorSupported(const TensorInfo& input,
                                   const TensorInfo& output,
-                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsFullyConnectedSupported(const TensorInfo& input,
                                            const TensorInfo& output,
                                            const TensorInfo& weights,
                                            const TensorInfo& biases,
                                            const FullyConnectedDescriptor& descriptor,
-                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsInputSupported(const TensorInfo& input,
-                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsL2NormalizationSupported(const TensorInfo& input,
                                             const TensorInfo& output,
                                             const L2NormalizationDescriptor& descriptor,
-                                            Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                            Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsLstmSupported(const TensorInfo& input,
                                  const TensorInfo& outputStateIn,
@@ -134,94 +135,99 @@ public:
                                  const TensorInfo* projectionBias,
                                  const TensorInfo* cellToForgetWeights,
                                  const TensorInfo* cellToOutputWeights,
-                                 Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                 Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsMaximumSupported(const TensorInfo& input0,
                                     const TensorInfo& input1,
                                     const TensorInfo& output,
-                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsMeanSupported(const TensorInfo& input,
                                  const TensorInfo& output,
                                  const MeanDescriptor& descriptor,
-                                 Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                 Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
+
+    virtual bool IsMemCopySupported(const TensorInfo& input,
+                                    const TensorInfo& output,
+                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsMergerSupported(const std::vector<const TensorInfo*> inputs,
                                    const TensorInfo& output,
                                    const OriginsDescriptor& descriptor,
-                                   Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                   Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsMinimumSupported(const TensorInfo& input0,
                                     const TensorInfo& input1,
                                     const TensorInfo& ouput,
-                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsMultiplicationSupported(const TensorInfo& input0,
                                            const TensorInfo& input1,
                                            const TensorInfo& output,
-                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsNormalizationSupported(const TensorInfo& input,
                                           const TensorInfo& output,
                                           const NormalizationDescriptor& descriptor,
-                                          Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                          Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsOutputSupported(const TensorInfo& output,
-                                   Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                   Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsPadSupported(const TensorInfo& input,
                                 const TensorInfo& output,
                                 const PadDescriptor& descriptor,
-                                Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsPermuteSupported(const TensorInfo& input,
                                     const TensorInfo& output,
                                     const PermuteDescriptor& descriptor,
-                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsPooling2dSupported(const TensorInfo& input,
                                       const TensorInfo& output,
                                       const Pooling2dDescriptor& descriptor,
-                                      Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                      Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsReshapeSupported(const TensorInfo& input,
-                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                    const ReshapeDescriptor& descriptor,
+                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsSpaceToBatchNdSupported(const TensorInfo& input,
                                            const TensorInfo& output,
                                            const SpaceToBatchNdDescriptor& descriptor,
-                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsResizeBilinearSupported(const TensorInfo& input,
-                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsRsqrtSupported(const TensorInfo& input,
                                   const TensorInfo& output,
-                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsSoftmaxSupported(const TensorInfo& input,
                                     const TensorInfo& output,
                                     const SoftmaxDescriptor& descriptor,
-                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsSplitterSupported(const TensorInfo& input,
                                      const ViewsDescriptor& descriptor,
-                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsStridedSliceSupported(const TensorInfo& input,
                                          const TensorInfo& output,
                                          const StridedSliceDescriptor& descriptor,
-                                         Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                         Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsSubtractionSupported(const TensorInfo& input0,
                                         const TensorInfo& input1,
                                         const TensorInfo& output,
-                                        Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                        Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 
     virtual bool IsGreaterSupported(const TensorInfo& input0,
                                     const TensorInfo& input1,
                                     const TensorInfo& ouput,
-                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const;
+                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const = 0;
 }; // class ILayerSupport
 
 using ILayerSupportSharedPtr = std::shared_ptr<ILayerSupport>;