From e870bef8c93a3c711362b3530aa49c353f048d01 Mon Sep 17 00:00:00 2001
From: Jim Flynn <jim.flynn@arm.com>
Date: Thu, 14 Feb 2019 09:56:36 +0000
Subject: IVGCVSW-2621 Add static quantization of Merger

Change-Id: I19f01698a6f9b361cd1737d76e6ec2020fab77a6
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
---
 src/armnn/test/QuantizerTest.cpp | 77 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 76 insertions(+), 1 deletion(-)

(limited to 'src/armnn/test/QuantizerTest.cpp')

diff --git a/src/armnn/test/QuantizerTest.cpp b/src/armnn/test/QuantizerTest.cpp
index 6820e14f16..a46b443fa7 100644
--- a/src/armnn/test/QuantizerTest.cpp
+++ b/src/armnn/test/QuantizerTest.cpp
@@ -293,7 +293,7 @@ protected:
         BOOST_TEST((info.GetQuantizationOffset() == 64));
 
         // Based off parent LeakyReLu [-5.f, 15.f]
-        BOOST_CHECK_CLOSE(info.GetQuantizationScale(), 20.0f/255.0f, 0.000001f);
+        BOOST_CHECK_CLOSE(info.GetQuantizationScale(), 20.0f/g_QuantizationBase, g_TestTolerance);
     }
 };
 
@@ -977,5 +977,80 @@ BOOST_AUTO_TEST_CASE(QuantizeConstant)
     VisitLayersTopologically(quantizedNetwork.get(), validator);
 }
 
+BOOST_AUTO_TEST_CASE(QuantizeMerger)
+{
+    class TestMergerVisitor : public LayerVisitorBase<VisitorThrowingPolicy>
+    {
+    public:
+        TestMergerVisitor(float min, float max) : m_Min(min), m_Max(max) {}
+
+        virtual void VisitInputLayer(const IConnectableLayer* layer,
+                                     LayerBindingId id,
+                                     const char* name = nullptr)
+        {}
+        virtual void VisitOutputLayer(const IConnectableLayer* layer,
+                                      LayerBindingId id,
+                                      const char* name = nullptr)
+        {}
+        virtual void VisitMergerLayer(const IConnectableLayer* layer,
+                                      const OriginsDescriptor& mergerDescriptor,
+                                      const char* name = nullptr)
+        {
+            std::pair<int, float> expectedValues = ComputeQAsymmParams(8, m_Min, m_Max);
+
+            TensorInfo info = layer->GetOutputSlot(0).GetTensorInfo();
+
+            BOOST_TEST((info.GetDataType() == DataType::QuantisedAsymm8));
+
+            BOOST_TEST((info.GetQuantizationOffset() == expectedValues.first));
+
+            BOOST_CHECK_CLOSE(info.GetQuantizationScale(), expectedValues.second, 0.000001f);
+        }
+
+    private:
+        float m_Min;
+        float m_Max;
+    };
+
+    INetworkPtr network = INetwork::Create();
+
+    IConnectableLayer* input0 = network->AddInputLayer(0);
+    IConnectableLayer* input1 = network->AddInputLayer(1);
+    IConnectableLayer* input2 = network->AddInputLayer(2);
+
+    OriginsDescriptor descriptor(3, 1);
+    IConnectableLayer* merger = network->AddMergerLayer(descriptor);
+
+    IConnectableLayer* output0 = network->AddOutputLayer(3);
+
+    // Establish connections
+    input0->GetOutputSlot(0).Connect(merger->GetInputSlot(0));
+    input1->GetOutputSlot(0).Connect(merger->GetInputSlot(1));
+    input2->GetOutputSlot(0).Connect(merger->GetInputSlot(2));
+    merger->GetOutputSlot(0).Connect(output0->GetInputSlot(0));
+
+    // Set TensorInfo
+    TensorShape shape{1U};
+    TensorInfo info(shape, DataType::Float32);
+
+    input0->GetOutputSlot(0).SetTensorInfo(info);
+    input1->GetOutputSlot(0).SetTensorInfo(info);
+    input2->GetOutputSlot(0).SetTensorInfo(info);
+    merger->GetOutputSlot(0).SetTensorInfo(info);
+
+    INetworkQuantizerPtr quantizerPtr =  INetworkQuantizer::Create(network.get());
+    // Override the input ranges
+    float min = -15.5f;
+    float max = 45.3f;
+
+    quantizerPtr->OverrideInputRange(0, (min + 2.1f), (max - 3.2f));
+    quantizerPtr->OverrideInputRange(1, (min + 6.7f), max);
+    quantizerPtr->OverrideInputRange(2, min, (max - 7.8f));
+
+    auto quantizedNetwork = quantizerPtr->ExportNetwork();
+    TestMergerVisitor validator(min, max);
+    VisitLayersTopologically(quantizedNetwork.get(), validator);
+}
+
 BOOST_AUTO_TEST_SUITE_END()
 } // namespace armnn
-- 
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