| // |
| // Copyright © 2020-2023 Arm Ltd and Contributors. All rights reserved. |
| // SPDX-License-Identifier: MIT |
| // |
| |
| #pragma once |
| |
| #include <DelegateOptions.hpp> |
| |
| #include <tensorflow/lite/builtin_ops.h> |
| #include <tensorflow/lite/c/builtin_op_data.h> |
| #include <tensorflow/lite/c/common.h> |
| #include <tensorflow/lite/minimal_logging.h> |
| #include <tensorflow/lite/version.h> |
| |
| #if TF_MAJOR_VERSION > 2 || (TF_MAJOR_VERSION == 2 && TF_MINOR_VERSION > 3) |
| #define ARMNN_POST_TFLITE_2_3 |
| #endif |
| |
| #if TF_MAJOR_VERSION > 2 || (TF_MAJOR_VERSION == 2 && TF_MINOR_VERSION > 4) |
| #define ARMNN_POST_TFLITE_2_4 |
| #endif |
| |
| #if TF_MAJOR_VERSION > 2 || (TF_MAJOR_VERSION == 2 && TF_MINOR_VERSION > 5) |
| #define ARMNN_POST_TFLITE_2_5 |
| #endif |
| |
| namespace armnnDelegate |
| { |
| |
| struct DelegateData |
| { |
| DelegateData(const std::vector<armnn::BackendId>& backends) |
| : m_Backends(backends) |
| , m_Network(nullptr, nullptr) |
| {} |
| |
| const std::vector<armnn::BackendId> m_Backends; |
| armnn::INetworkPtr m_Network; |
| std::vector<armnn::IOutputSlot*> m_OutputSlotForNode; |
| }; |
| |
| // Forward decleration for functions initializing the ArmNN Delegate |
| DelegateOptions TfLiteArmnnDelegateOptionsDefault(); |
| |
| TfLiteDelegate* TfLiteArmnnDelegateCreate(armnnDelegate::DelegateOptions options); |
| |
| void TfLiteArmnnDelegateDelete(TfLiteDelegate* tfLiteDelegate); |
| |
| TfLiteStatus DoPrepare(TfLiteContext* context, TfLiteDelegate* delegate); |
| |
| /// ArmNN Delegate |
| class Delegate |
| { |
| friend class ArmnnSubgraph; |
| public: |
| explicit Delegate(armnnDelegate::DelegateOptions options); |
| |
| TfLiteIntArray* IdentifyOperatorsToDelegate(TfLiteContext* context); |
| |
| TfLiteDelegate* GetDelegate(); |
| |
| /// Retrieve version in X.Y.Z form |
| static const std::string GetVersion(); |
| |
| private: |
| /** |
| * Returns a pointer to the armnn::IRuntime* this will be shared by all armnn_delegates. |
| */ |
| armnn::IRuntime* GetRuntime(const armnn::IRuntime::CreationOptions& options) |
| { |
| static armnn::IRuntimePtr instance = armnn::IRuntime::Create(options); |
| // Instantiated on first use. |
| return instance.get(); |
| } |
| |
| TfLiteDelegate m_Delegate = { |
| reinterpret_cast<void*>(this), // .data_ |
| DoPrepare, // .Prepare |
| nullptr, // .CopyFromBufferHandle |
| nullptr, // .CopyToBufferHandle |
| nullptr, // .FreeBufferHandle |
| kTfLiteDelegateFlagsNone, // .flags |
| nullptr, // .opaque_delegate_builder |
| }; |
| |
| /// ArmNN Runtime pointer |
| armnn::IRuntime* m_Runtime; |
| /// ArmNN Delegate Options |
| armnnDelegate::DelegateOptions m_Options; |
| }; |
| |
| /// ArmnnSubgraph class where parsing the nodes to ArmNN format and creating the ArmNN Graph |
| class ArmnnSubgraph |
| { |
| public: |
| static ArmnnSubgraph* Create(TfLiteContext* tfLiteContext, |
| const TfLiteDelegateParams* parameters, |
| const Delegate* delegate); |
| |
| TfLiteStatus Prepare(TfLiteContext* tfLiteContext); |
| |
| TfLiteStatus Invoke(TfLiteContext* tfLiteContext, TfLiteNode* tfLiteNode); |
| |
| static TfLiteStatus VisitNode(DelegateData& delegateData, |
| TfLiteContext* tfLiteContext, |
| TfLiteRegistration* tfLiteRegistration, |
| TfLiteNode* tfLiteNode, |
| int nodeIndex); |
| |
| private: |
| ArmnnSubgraph(armnn::NetworkId networkId, |
| armnn::IRuntime* runtime, |
| std::vector<armnn::BindingPointInfo>& inputBindings, |
| std::vector<armnn::BindingPointInfo>& outputBindings) |
| : m_NetworkId(networkId), m_Runtime(runtime), m_InputBindings(inputBindings), m_OutputBindings(outputBindings) |
| {} |
| |
| static TfLiteStatus AddInputLayer(DelegateData& delegateData, |
| TfLiteContext* tfLiteContext, |
| const TfLiteIntArray* inputs, |
| std::vector<armnn::BindingPointInfo>& inputBindings); |
| |
| static TfLiteStatus AddOutputLayer(DelegateData& delegateData, |
| TfLiteContext* tfLiteContext, |
| const TfLiteIntArray* outputs, |
| std::vector<armnn::BindingPointInfo>& outputBindings); |
| |
| |
| /// The Network Id |
| armnn::NetworkId m_NetworkId; |
| /// ArmNN Runtime |
| armnn::IRuntime* m_Runtime; |
| |
| // Binding information for inputs and outputs |
| std::vector<armnn::BindingPointInfo> m_InputBindings; |
| std::vector<armnn::BindingPointInfo> m_OutputBindings; |
| |
| }; |
| |
| } // armnnDelegate namespace |