From 4fcda0101ec3d110c1d6d7bee5c83416b645528a Mon Sep 17 00:00:00 2001
From: telsoa01 <telmo.soares@arm.com>
Date: Fri, 9 Mar 2018 14:13:49 +0000
Subject: Release 18.02

Change-Id: Id3c11dc5ee94ef664374a988fcc6901e9a232fa6
---
 .../backends/RefWorkloads/RefWorkloadUtils.hpp     | 125 +++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 src/armnn/backends/RefWorkloads/RefWorkloadUtils.hpp

(limited to 'src/armnn/backends/RefWorkloads/RefWorkloadUtils.hpp')

diff --git a/src/armnn/backends/RefWorkloads/RefWorkloadUtils.hpp b/src/armnn/backends/RefWorkloads/RefWorkloadUtils.hpp
new file mode 100644
index 0000000000..088fe819e5
--- /dev/null
+++ b/src/armnn/backends/RefWorkloads/RefWorkloadUtils.hpp
@@ -0,0 +1,125 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// See LICENSE file in the project root for full license information.
+//
+
+#pragma once
+
+#include "backends/CpuTensorHandle.hpp"
+
+#include <armnn/Tensor.hpp>
+#include <armnn/Types.hpp>
+
+#include <boost/polymorphic_cast.hpp>
+
+namespace armnn
+{
+
+////////////////////////////////////////////
+/// float32 helpers
+////////////////////////////////////////////
+
+inline const TensorInfo& GetTensorInfo(const ITensorHandle* tensorHandle)
+{
+    // We know that reference workloads use CpuTensorHandles only, so this cast is legitimate.
+    const ConstCpuTensorHandle* cpuTensorHandle =
+        boost::polymorphic_downcast<const ConstCpuTensorHandle*>(tensorHandle);
+    return cpuTensorHandle->GetTensorInfo();
+}
+
+template <typename DataType>
+inline const DataType* GetConstCpuData(const ITensorHandle* tensorHandle)
+{
+    // We know that reference workloads use (Const)CpuTensorHandles only, so this cast is legitimate.
+    const ConstCpuTensorHandle* cpuTensorHandle =
+        boost::polymorphic_downcast<const ConstCpuTensorHandle*>(tensorHandle);
+    return cpuTensorHandle->GetConstTensor<DataType>();
+}
+
+template <typename DataType>
+inline DataType* GetCpuData(const ITensorHandle* tensorHandle)
+{
+    // We know that reference workloads use CpuTensorHandles only, so this cast is legitimate.
+    const CpuTensorHandle* cpuTensorHandle = boost::polymorphic_downcast<const CpuTensorHandle*>(tensorHandle);
+    return cpuTensorHandle->GetTensor<DataType>();
+};
+
+template <typename DataType, typename PayloadType>
+const DataType* GetInputTensorData(unsigned int idx, const PayloadType& data)
+{
+    const ITensorHandle* tensorHandle = data.m_Inputs[idx];
+    return GetConstCpuData<DataType>(tensorHandle);
+}
+
+template <typename DataType, typename PayloadType>
+DataType* GetOutputTensorData(unsigned int idx, const PayloadType& data)
+{
+    const ITensorHandle* tensorHandle = data.m_Outputs[idx];
+    return GetCpuData<DataType>(tensorHandle);
+}
+
+template <typename PayloadType>
+const float* GetInputTensorDataFloat(unsigned int idx, const PayloadType& data)
+{
+    return GetInputTensorData<float>(idx, data);
+}
+
+template <typename PayloadType>
+float* GetOutputTensorDataFloat(unsigned int idx, const PayloadType& data)
+{
+    return GetOutputTensorData<float>(idx, data);
+}
+
+////////////////////////////////////////////
+/// u8 helpers
+////////////////////////////////////////////
+
+inline const uint8_t* GetConstCpuU8Data(const ITensorHandle* tensorHandle)
+{
+    // We know that reference workloads use (Const)CpuTensorHandles only, so this cast is legitimate.
+    const ConstCpuTensorHandle* cpuTensorHandle =
+        boost::polymorphic_downcast<const ConstCpuTensorHandle*>(tensorHandle);
+    return cpuTensorHandle->GetConstTensor<uint8_t>();
+};
+
+inline uint8_t* GetCpuU8Data(const ITensorHandle* tensorHandle)
+{
+    // We know that reference workloads use CpuTensorHandles only, so this cast is legitimate.
+    const CpuTensorHandle* cpuTensorHandle = boost::polymorphic_downcast<const CpuTensorHandle*>(tensorHandle);
+    return cpuTensorHandle->GetTensor<uint8_t>();
+};
+
+template <typename PayloadType>
+const uint8_t* GetInputTensorDataU8(unsigned int idx, const PayloadType& data)
+{
+    const ITensorHandle* tensorHandle = data.m_Inputs[idx];
+    return GetConstCpuU8Data(tensorHandle);
+}
+
+template <typename PayloadType>
+uint8_t* GetOutputTensorDataU8(unsigned int idx, const PayloadType& data)
+{
+    const ITensorHandle* tensorHandle = data.m_Outputs[idx];
+    return GetCpuU8Data(tensorHandle);
+}
+
+template<typename T>
+std::vector<float> Dequantize(const T* quant, const TensorInfo& info)
+{
+    std::vector<float> ret(info.GetNumElements());
+    for (size_t i = 0; i < info.GetNumElements(); i++)
+    {
+        ret[i] = armnn::Dequantize(quant[i], info.GetQuantizationScale(), info.GetQuantizationOffset());
+    }
+    return ret;
+}
+
+inline void Quantize(uint8_t* quant, const float* dequant, const TensorInfo& info)
+{
+    for (size_t i = 0; i < info.GetNumElements(); i++)
+    {
+        quant[i] = armnn::Quantize<uint8_t>(dequant[i], info.GetQuantizationScale(), info.GetQuantizationOffset());
+    }
+}
+
+} //namespace armnn
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