IVGCVSW-2875 Reference implementation and unit tests for Dequantize

Change-Id: Ie4ade0519cb0bbe35dc36be6c9cd749b9171c74b
Signed-off-by: Nattapat Chaimanowong <nattapat.chaimanowong@arm.com>

4 files changed, 108 insertions, 0 deletions

diff --git a/src/backends/backendsCommon/test/CMakeLists.txt b/src/backends/backendsCommon/test/CMakeLists.txt
index 124d8f2744..47d52312b6 100644
--- a/src/backends/backendsCommon/test/CMakeLists.txt
+++ b/src/backends/backendsCommon/test/CMakeLists.txt
@@ -14,6 +14,7 @@ list(APPEND armnnBackendsCommonUnitTests_sources
     ConvertFp16ToFp32TestImpl.hpp
     ConvertFp32ToFp16TestImpl.hpp
     DebugTestImpl.hpp
+    DequantizeTestImpl.hpp
     DetectionPostProcessLayerTestImpl.hpp
     DetectionPostProcessTestImpl.hpp
     EndToEndTestImpl.hpp
diff --git a/src/backends/backendsCommon/test/DequantizeTestImpl.hpp b/src/backends/backendsCommon/test/DequantizeTestImpl.hpp
new file mode 100644
index 0000000000..5c10c751e6
--- /dev/null
+++ b/src/backends/backendsCommon/test/DequantizeTestImpl.hpp
@@ -0,0 +1,95 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include "WorkloadTestUtils.hpp"
+
+#include <armnn/ArmNN.hpp>
+#include <armnn/Tensor.hpp>
+#include <armnn/TypesUtils.hpp>
+
+#include <backendsCommon/CpuTensorHandle.hpp>
+#include <backendsCommon/IBackendInternal.hpp>
+#include <backendsCommon/WorkloadFactory.hpp>
+
+#include <test/TensorHelpers.hpp>
+
+namespace
+{
+
+template<typename T, std::size_t Dim>
+LayerTestResult<float, Dim> DequantizeTestImpl(
+    armnn::IWorkloadFactory& workloadFactory,
+    const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
+    const armnn::TensorInfo& inputTensorInfo,
+    const armnn::TensorInfo& outputTensorInfo,
+    const std::vector<T>& inputData,
+    const std::vector<float>& expectedOutputData,
+    armnn::DequantizeQueueDescriptor descriptor)
+{
+    boost::multi_array<T, Dim> input = MakeTensor<T, Dim>(inputTensorInfo, inputData);
+
+    LayerTestResult<float, Dim> ret(outputTensorInfo);
+    ret.outputExpected = MakeTensor<float, Dim>(outputTensorInfo, expectedOutputData);
+
+    std::unique_ptr<armnn::ITensorHandle> inputHandle = workloadFactory.CreateTensorHandle(inputTensorInfo);
+    std::unique_ptr<armnn::ITensorHandle> outputHandle = workloadFactory.CreateTensorHandle(outputTensorInfo);
+
+    armnn::WorkloadInfo info;
+    AddInputToWorkload(descriptor, info, inputTensorInfo, inputHandle.get());
+    AddOutputToWorkload(descriptor, info, outputTensorInfo, outputHandle.get());
+
+    std::unique_ptr<armnn::IWorkload> workload = workloadFactory.CreateDequantize(descriptor, info);
+
+    inputHandle->Allocate();
+    outputHandle->Allocate();
+
+    CopyDataToITensorHandle(inputHandle.get(), input.data());
+
+    ExecuteWorkload(*workload, memoryManager);
+
+    CopyDataFromITensorHandle(ret.output.data(), outputHandle.get());
+
+    return ret;
+}
+
+template <armnn::DataType ArmnnInputType>
+LayerTestResult<float, 4> DequantizeSimpleTest(
+    armnn::IWorkloadFactory& workloadFactory,
+    const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager)
+{
+    using T = armnn::ResolveType<ArmnnInputType>;
+
+    armnn::DequantizeQueueDescriptor desc;
+
+    const armnn::TensorInfo inputTensorInfo({1, 2, 2, 3}, ArmnnInputType, 0.5f, 1);
+    const armnn::TensorInfo outputTensorInfo({1, 2, 2, 3}, armnn::DataType::Float32);
+
+    std::vector<T> inputData = std::vector<T>(
+    {
+         3,  5,  7,
+         9, 11, 13,
+        15, 17, 19,
+        21, 23, 25,
+    });
+
+    std::vector<float> expectedOutputData = std::vector<float>(
+    {
+        1.0f,   2.0f,  3.0f,
+        4.0f,   5.0f,  6.0f,
+        7.0f,   8.0f,  9.0f,
+        10.0f, 11.0f, 12.0f,
+    });
+
+    return DequantizeTestImpl<T, 4>(workloadFactory,
+                                    memoryManager,
+                                    inputTensorInfo,
+                                    outputTensorInfo,
+                                    inputData,
+                                    expectedOutputData,
+                                    desc);
+}
+
+} // anonymous namespace
diff --git a/src/backends/backendsCommon/test/LayerTests.cpp b/src/backends/backendsCommon/test/LayerTests.cpp
index a088aaa947..be1d43541c 100644
--- a/src/backends/backendsCommon/test/LayerTests.cpp
+++ b/src/backends/backendsCommon/test/LayerTests.cpp
@@ -43,6 +43,7 @@
 #include "ConvertFp16ToFp32TestImpl.hpp"
 #include "ConvertFp32ToFp16TestImpl.hpp"
 #include "DebugTestImpl.hpp"
+#include "DequantizeTestImpl.hpp"
 
 // 3-channel 16x8 image used as common input data for a number of Conv2d tests.
 static std::vector<float> ConvInput3x8x16({
@@ -8969,3 +8970,10 @@ LayerTestResult<uint8_t, 4> GatherMultiDimParamsMultiDimIndicesUint8Test(
     return GatherMultiDimParamsMultiDimIndicesTestImpl<armnn::DataType::QuantisedAsymm8>(
         workloadFactory, memoryManager);
 }
+
+LayerTestResult<float, 4> DequantizeUint8Test(
+    armnn::IWorkloadFactory& workloadFactory,
+    const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager)
+{
+    return DequantizeSimpleTest<armnn::DataType::QuantisedAsymm8>(workloadFactory, memoryManager);
+}
diff --git a/src/backends/backendsCommon/test/LayerTests.hpp b/src/backends/backendsCommon/test/LayerTests.hpp
index a8cb553ce9..c14ba7b35f 100644
--- a/src/backends/backendsCommon/test/LayerTests.hpp
+++ b/src/backends/backendsCommon/test/LayerTests.hpp
@@ -1439,3 +1439,7 @@ LayerTestResult<float, 4> GatherMultiDimParamsMultiDimIndicesFloatTest(
 LayerTestResult<uint8_t, 4> GatherMultiDimParamsMultiDimIndicesUint8Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager);
+
+LayerTestResult<float, 4> DequantizeUint8Test(
+    armnn::IWorkloadFactory& workloadFactory,
+    const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager);