From d5fd9767d426ca465eb660be062eecce51ad1097 Mon Sep 17 00:00:00 2001
From: Nattapat Chaimanowong <nattapat.chaimanowong@arm.com>
Date: Thu, 4 Apr 2019 13:33:10 +0100
Subject: IVGCVSW-2886 Support multiple backends in Android driver

Change-Id: I4abe1f750801911570b6dc65c187b828c5929b5f
Signed-off-by: Nattapat Chaimanowong <nattapat.chaimanowong@arm.com>
---
 ConversionUtils.hpp | 59 +++++++++++++++++++++++++++++++++++------------------
 1 file changed, 39 insertions(+), 20 deletions(-)

(limited to 'ConversionUtils.hpp')

diff --git a/ConversionUtils.hpp b/ConversionUtils.hpp
index ca1f0aea..de4516c0 100644
--- a/ConversionUtils.hpp
+++ b/ConversionUtils.hpp
@@ -19,6 +19,7 @@
 #include <boost/test/tools/floating_point_comparison.hpp>
 
 #include <log/log.h>
+#include <vector>
 
 namespace armnn_driver
 {
@@ -29,12 +30,12 @@ namespace armnn_driver
 
 struct ConversionData
 {
-    ConversionData(armnn::Compute compute)
-            : m_Compute(compute)
-            , m_Network(nullptr, nullptr)
+    ConversionData(const std::vector<armnn::BackendId>& backends)
+    : m_Backends(backends)
+    , m_Network(nullptr, nullptr)
     {}
 
-    const armnn::Compute                      m_Compute;
+    const std::vector<armnn::BackendId>       m_Backends;
     armnn::INetworkPtr                        m_Network;
     std::vector<armnn::IOutputSlot*>          m_OutputSlotForOperand;
     std::vector<android::nn::RunTimePoolInfo> m_MemPools;
@@ -139,6 +140,24 @@ bool IsLayerSupported(const char* funcName, IsLayerSupportedFunc f, Args&&... ar
     }
 }
 
+template<typename IsLayerSupportedFunc, typename ... Args>
+bool IsLayerSupportedForAnyBackend(const char* funcName,
+                                   IsLayerSupportedFunc f,
+                                   const std::vector<armnn::BackendId>& backends,
+                                   Args&&... args)
+{
+    for (auto&& backend : backends)
+    {
+        if (IsLayerSupported(funcName, f, backend, std::forward<Args>(args)...))
+        {
+            return true;
+        }
+    }
+
+    ALOGD("%s: not supported by any specified backend", funcName);
+    return false;
+}
+
 armnn::TensorShape GetTensorShapeForOperand(const Operand& operand)
 {
     return armnn::TensorShape(operand.dimensions.size(), operand.dimensions.data());
@@ -809,10 +828,10 @@ LayerInputHandle ConvertToLayerInputHandle(const HalOperation& operation,
             ConstTensorPin tensorPin = ConvertOperandToConstTensorPin(*operand, model, data);
             if (tensorPin.IsValid())
             {
-                if (!IsLayerSupported(__func__,
-                                      armnn::IsConstantSupported,
-                                      data.m_Compute,
-                                      tensorPin.GetConstTensor().GetInfo()))
+                if (!IsLayerSupportedForAnyBackend(__func__,
+                                                   armnn::IsConstantSupported,
+                                                   data.m_Backends,
+                                                   tensorPin.GetConstTensor().GetInfo()))
                 {
                     return LayerInputHandle();
                 }
@@ -859,12 +878,12 @@ bool ConvertToActivation(const HalOperation& operation,
         return false;
     }
     const armnn::TensorInfo outInfo = GetTensorInfoForOperand(*outputOperand);
-    if (!IsLayerSupported(__func__,
-                          armnn::IsActivationSupported,
-                          data.m_Compute,
-                          input.GetTensorInfo(),
-                          outInfo,
-                          activationDesc))
+    if (!IsLayerSupportedForAnyBackend(__func__,
+                                       armnn::IsActivationSupported,
+                                       data.m_Backends,
+                                       input.GetTensorInfo(),
+                                       outInfo,
+                                       activationDesc))
     {
         return false;
     }
@@ -976,12 +995,12 @@ bool ConvertPooling2d(const HalOperation& operation,
         }
     }
 
-    if (!IsLayerSupported(__func__,
-                          armnn::IsPooling2dSupported,
-                          data.m_Compute,
-                          inputInfo,
-                          outputInfo,
-                          desc))
+    if (!IsLayerSupportedForAnyBackend(__func__,
+                                       armnn::IsPooling2dSupported,
+                                       data.m_Backends,
+                                       inputInfo,
+                                       outputInfo,
+                                       desc))
     {
         return false;
     }
-- 
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