| // |
| // Copyright © 2023 Arm Ltd and Contributors. All rights reserved. |
| // SPDX-License-Identifier: MIT |
| // |
| |
| #pragma once |
| |
| #include <DelegateOptions.hpp> |
| |
| #include <tensorflow/lite/c/c_api_opaque.h> |
| #include <tensorflow/lite/core/experimental/acceleration/configuration/c/stable_delegate.h> |
| |
| namespace armnnOpaqueDelegate |
| { |
| |
| 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 declaration for functions initializing the ArmNN Delegate |
| ::armnnDelegate::DelegateOptions TfLiteArmnnDelegateOptionsDefault(); |
| |
| TfLiteOpaqueDelegate* TfLiteArmnnOpaqueDelegateCreate(const void* settings); |
| |
| void TfLiteArmnnOpaqueDelegateDelete(TfLiteOpaqueDelegate* tfLiteDelegate); |
| |
| TfLiteStatus DoPrepare(TfLiteOpaqueContext* context, TfLiteOpaqueDelegate* delegate, void* data); |
| |
| /// ArmNN Opaque Delegate |
| class ArmnnOpaqueDelegate |
| { |
| friend class ArmnnSubgraph; |
| public: |
| explicit ArmnnOpaqueDelegate(armnnDelegate::DelegateOptions options); |
| |
| TfLiteIntArray* IdentifyOperatorsToDelegate(TfLiteOpaqueContext* context); |
| |
| TfLiteOpaqueDelegateBuilder* GetDelegateBuilder() { return &m_Builder; } |
| |
| /// 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(); |
| } |
| |
| TfLiteOpaqueDelegateBuilder m_Builder = |
| { |
| reinterpret_cast<void*>(this), // .data_ |
| DoPrepare, // .Prepare |
| nullptr, // .CopyFromBufferHandle |
| nullptr, // .CopyToBufferHandle |
| nullptr, // .FreeBufferHandle |
| kTfLiteDelegateFlagsNone, // .flags |
| }; |
| |
| /// ArmNN Runtime pointer |
| armnn::IRuntime* m_Runtime; |
| /// ArmNN Delegate Options |
| armnnDelegate::DelegateOptions m_Options; |
| }; |
| |
| static int TfLiteArmnnOpaqueDelegateErrno(TfLiteOpaqueDelegate* delegate) { return 0; } |
| |
| /// In order for the delegate to be loaded by TfLite |
| const TfLiteOpaqueDelegatePlugin* GetArmnnDelegatePluginApi(); |
| |
| extern const TfLiteStableDelegate TFL_TheStableDelegate; |
| |
| /// ArmnnSubgraph class where parsing the nodes to ArmNN format and creating the ArmNN Graph |
| class ArmnnSubgraph |
| { |
| public: |
| static ArmnnSubgraph* Create(TfLiteOpaqueContext* tfLiteContext, |
| const TfLiteOpaqueDelegateParams* parameters, |
| const ArmnnOpaqueDelegate* delegate); |
| |
| TfLiteStatus Prepare(TfLiteOpaqueContext* tfLiteContext); |
| |
| TfLiteStatus Invoke(TfLiteOpaqueContext* tfLiteContext, TfLiteOpaqueNode* tfLiteNode); |
| |
| static TfLiteStatus VisitNode(DelegateData& delegateData, |
| TfLiteOpaqueContext* tfLiteContext, |
| TfLiteRegistrationExternal* tfLiteRegistration, |
| TfLiteOpaqueNode* 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, |
| TfLiteOpaqueContext* tfLiteContext, |
| const TfLiteIntArray* inputs, |
| std::vector<armnn::BindingPointInfo>& inputBindings); |
| static TfLiteStatus AddOutputLayer(DelegateData& delegateData, |
| TfLiteOpaqueContext* 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; |
| }; |
| |
| } // armnnOpaqueDelegate namespace |