From 10b4dfd8e9ccd7a03df7bb053ee1c644cb37f8ab Mon Sep 17 00:00:00 2001
From: David Beck <david.beck@arm.com>
Date: Wed, 19 Sep 2018 12:03:20 +0100
Subject: IVGCVSW-1897 : build infrastructure for the src/backends folder

Change-Id: I7ebafb675ccc77ad54d1deb01412a8379a5356bb
---
 src/backends/NeonTensorHandle.hpp | 137 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 src/backends/NeonTensorHandle.hpp

(limited to 'src/backends/NeonTensorHandle.hpp')

diff --git a/src/backends/NeonTensorHandle.hpp b/src/backends/NeonTensorHandle.hpp
new file mode 100644
index 0000000000..e385c83967
--- /dev/null
+++ b/src/backends/NeonTensorHandle.hpp
@@ -0,0 +1,137 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include "OutputHandler.hpp"
+#include "ArmComputeTensorUtils.hpp"
+
+#include <arm_compute/runtime/MemoryGroup.h>
+#include <arm_compute/runtime/IMemoryGroup.h>
+#include <arm_compute/runtime/Tensor.h>
+#include <arm_compute/runtime/SubTensor.h>
+#include <arm_compute/core/TensorShape.h>
+#include <arm_compute/core/Coordinates.h>
+
+#include <boost/polymorphic_pointer_cast.hpp>
+
+namespace armnn
+{
+
+class INeonTensorHandle : public ITensorHandle
+{
+public:
+    virtual arm_compute::ITensor& GetTensor() = 0;
+    virtual arm_compute::ITensor const& GetTensor() const = 0;
+    virtual arm_compute::DataType GetDataType() const = 0;
+    virtual void SetMemoryGroup(const std::shared_ptr<arm_compute::IMemoryGroup>& memoryGroup) = 0;
+};
+
+class NeonTensorHandle : public INeonTensorHandle
+{
+public:
+    NeonTensorHandle(const TensorInfo& tensorInfo)
+    {
+        armnn::armcomputetensorutils::BuildArmComputeTensor(m_Tensor, tensorInfo);
+    }
+
+    arm_compute::ITensor& GetTensor() override { return m_Tensor; }
+    arm_compute::ITensor const& GetTensor() const override { return m_Tensor; }
+
+    virtual void Allocate() override
+    {
+        armnn::armcomputetensorutils::InitialiseArmComputeTensorEmpty(m_Tensor);
+    };
+
+    virtual void Manage() override
+    {
+        BOOST_ASSERT(m_MemoryGroup != nullptr);
+        m_MemoryGroup->manage(&m_Tensor);
+    }
+
+    virtual ITensorHandle::Type GetType() const override { return ITensorHandle::Neon; }
+
+    virtual ITensorHandle* GetParent() const override { return nullptr; }
+
+    virtual arm_compute::DataType GetDataType() const override
+    {
+        return m_Tensor.info()->data_type();
+    }
+
+    virtual void SetMemoryGroup(const std::shared_ptr<arm_compute::IMemoryGroup>& memoryGroup) override
+    {
+        m_MemoryGroup = boost::polymorphic_pointer_downcast<arm_compute::MemoryGroup>(memoryGroup);
+    }
+
+    virtual const void* Map(bool /* blocking = true */) const override
+    {
+        return static_cast<const void*>(m_Tensor.buffer() + m_Tensor.info()->offset_first_element_in_bytes());
+    }
+    virtual void Unmap() const override {}
+
+
+    TensorShape GetStrides() const override
+    {
+        return armcomputetensorutils::GetStrides(m_Tensor.info()->strides_in_bytes());
+    }
+
+    TensorShape GetShape() const override
+    {
+        return armcomputetensorutils::GetShape(m_Tensor.info()->tensor_shape());
+    }
+
+private:
+    arm_compute::Tensor m_Tensor;
+    std::shared_ptr<arm_compute::MemoryGroup> m_MemoryGroup;
+};
+
+class NeonSubTensorHandle : public INeonTensorHandle
+{
+public:
+    NeonSubTensorHandle(INeonTensorHandle* parent,
+                        const arm_compute::TensorShape& shape,
+                        const arm_compute::Coordinates& coords)
+     : m_Tensor(&parent->GetTensor(), shape, coords)
+    {
+        parentHandle = parent;
+    }
+
+    arm_compute::ITensor& GetTensor() override { return m_Tensor; }
+    arm_compute::ITensor const& GetTensor() const override { return m_Tensor; }
+
+    virtual void Allocate() override {}
+    virtual void Manage() override {}
+
+    virtual ITensorHandle::Type GetType() const override { return ITensorHandle::Neon; }
+
+    virtual ITensorHandle* GetParent() const override { return parentHandle; }
+
+    virtual arm_compute::DataType GetDataType() const override
+    {
+        return m_Tensor.info()->data_type();
+    }
+
+    virtual void SetMemoryGroup(const std::shared_ptr<arm_compute::IMemoryGroup>&) override {}
+
+    virtual const void* Map(bool /* blocking = true */) const override
+    {
+        return static_cast<const void*>(m_Tensor.buffer() + m_Tensor.info()->offset_first_element_in_bytes());
+    }
+    virtual void Unmap() const override {}
+
+    TensorShape GetStrides() const override
+    {
+        return armcomputetensorutils::GetStrides(m_Tensor.info()->strides_in_bytes());
+    }
+
+    TensorShape GetShape() const override
+    {
+        return armcomputetensorutils::GetShape(m_Tensor.info()->tensor_shape());
+    }
+private:
+    arm_compute::SubTensor m_Tensor;
+    ITensorHandle* parentHandle = nullptr;
+};
+
+}
-- 
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