Teresa Charlin | ad1b3d7 | 2023-03-14 12:10:28 +0000 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2020-2023 Arm Ltd and Contributors. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #pragma once |
| 7 | |
| 8 | #include <DelegateOptions.hpp> |
| 9 | |
| 10 | #include <tensorflow/lite/builtin_ops.h> |
| 11 | #include <tensorflow/lite/c/builtin_op_data.h> |
| 12 | #include <tensorflow/lite/c/common.h> |
| 13 | #include <tensorflow/lite/minimal_logging.h> |
| 14 | #include <tensorflow/lite/version.h> |
| 15 | |
| 16 | #if TF_MAJOR_VERSION > 2 || (TF_MAJOR_VERSION == 2 && TF_MINOR_VERSION > 3) |
| 17 | #define ARMNN_POST_TFLITE_2_3 |
| 18 | #endif |
| 19 | |
| 20 | #if TF_MAJOR_VERSION > 2 || (TF_MAJOR_VERSION == 2 && TF_MINOR_VERSION > 4) |
| 21 | #define ARMNN_POST_TFLITE_2_4 |
| 22 | #endif |
| 23 | |
| 24 | #if TF_MAJOR_VERSION > 2 || (TF_MAJOR_VERSION == 2 && TF_MINOR_VERSION > 5) |
| 25 | #define ARMNN_POST_TFLITE_2_5 |
| 26 | #endif |
| 27 | |
| 28 | namespace armnnDelegate |
| 29 | { |
| 30 | |
| 31 | struct DelegateData |
| 32 | { |
| 33 | DelegateData(const std::vector<armnn::BackendId>& backends) |
| 34 | : m_Backends(backends) |
| 35 | , m_Network(nullptr, nullptr) |
| 36 | {} |
| 37 | |
| 38 | const std::vector<armnn::BackendId> m_Backends; |
| 39 | armnn::INetworkPtr m_Network; |
| 40 | std::vector<armnn::IOutputSlot*> m_OutputSlotForNode; |
| 41 | }; |
| 42 | |
| 43 | // Forward decleration for functions initializing the ArmNN Delegate |
| 44 | DelegateOptions TfLiteArmnnDelegateOptionsDefault(); |
| 45 | |
| 46 | TfLiteDelegate* TfLiteArmnnDelegateCreate(armnnDelegate::DelegateOptions options); |
| 47 | |
| 48 | void TfLiteArmnnDelegateDelete(TfLiteDelegate* tfLiteDelegate); |
| 49 | |
| 50 | TfLiteStatus DoPrepare(TfLiteContext* context, TfLiteDelegate* delegate); |
| 51 | |
| 52 | /// ArmNN Delegate |
| 53 | class Delegate |
| 54 | { |
| 55 | friend class ArmnnSubgraph; |
| 56 | public: |
| 57 | explicit Delegate(armnnDelegate::DelegateOptions options); |
| 58 | |
| 59 | TfLiteIntArray* IdentifyOperatorsToDelegate(TfLiteContext* context); |
| 60 | |
| 61 | TfLiteDelegate* GetDelegate(); |
| 62 | |
| 63 | /// Retrieve version in X.Y.Z form |
| 64 | static const std::string GetVersion(); |
| 65 | |
| 66 | private: |
| 67 | /** |
| 68 | * Returns a pointer to the armnn::IRuntime* this will be shared by all armnn_delegates. |
| 69 | */ |
| 70 | armnn::IRuntime* GetRuntime(const armnn::IRuntime::CreationOptions& options) |
| 71 | { |
| 72 | static armnn::IRuntimePtr instance = armnn::IRuntime::Create(options); |
| 73 | // Instantiated on first use. |
| 74 | return instance.get(); |
| 75 | } |
| 76 | |
| 77 | TfLiteDelegate m_Delegate = { |
| 78 | reinterpret_cast<void*>(this), // .data_ |
| 79 | DoPrepare, // .Prepare |
| 80 | nullptr, // .CopyFromBufferHandle |
| 81 | nullptr, // .CopyToBufferHandle |
| 82 | nullptr, // .FreeBufferHandle |
| 83 | kTfLiteDelegateFlagsNone, // .flags |
| 84 | nullptr, // .opaque_delegate_builder |
| 85 | }; |
| 86 | |
| 87 | /// ArmNN Runtime pointer |
| 88 | armnn::IRuntime* m_Runtime; |
| 89 | /// ArmNN Delegate Options |
| 90 | armnnDelegate::DelegateOptions m_Options; |
| 91 | }; |
| 92 | |
| 93 | /// ArmnnSubgraph class where parsing the nodes to ArmNN format and creating the ArmNN Graph |
| 94 | class ArmnnSubgraph |
| 95 | { |
| 96 | public: |
| 97 | static ArmnnSubgraph* Create(TfLiteContext* tfLiteContext, |
| 98 | const TfLiteDelegateParams* parameters, |
| 99 | const Delegate* delegate); |
| 100 | |
| 101 | TfLiteStatus Prepare(TfLiteContext* tfLiteContext); |
| 102 | |
| 103 | TfLiteStatus Invoke(TfLiteContext* tfLiteContext, TfLiteNode* tfLiteNode); |
| 104 | |
| 105 | static TfLiteStatus VisitNode(DelegateData& delegateData, |
| 106 | TfLiteContext* tfLiteContext, |
| 107 | TfLiteRegistration* tfLiteRegistration, |
| 108 | TfLiteNode* tfLiteNode, |
| 109 | int nodeIndex); |
| 110 | |
| 111 | private: |
| 112 | ArmnnSubgraph(armnn::NetworkId networkId, |
| 113 | armnn::IRuntime* runtime, |
| 114 | std::vector<armnn::BindingPointInfo>& inputBindings, |
| 115 | std::vector<armnn::BindingPointInfo>& outputBindings) |
| 116 | : m_NetworkId(networkId), m_Runtime(runtime), m_InputBindings(inputBindings), m_OutputBindings(outputBindings) |
| 117 | {} |
| 118 | |
| 119 | static TfLiteStatus AddInputLayer(DelegateData& delegateData, |
| 120 | TfLiteContext* tfLiteContext, |
| 121 | const TfLiteIntArray* inputs, |
| 122 | std::vector<armnn::BindingPointInfo>& inputBindings); |
| 123 | |
| 124 | static TfLiteStatus AddOutputLayer(DelegateData& delegateData, |
| 125 | TfLiteContext* tfLiteContext, |
| 126 | const TfLiteIntArray* outputs, |
| 127 | std::vector<armnn::BindingPointInfo>& outputBindings); |
| 128 | |
| 129 | |
| 130 | /// The Network Id |
| 131 | armnn::NetworkId m_NetworkId; |
Francis Murtagh | c4fb0dd | 2023-03-16 17:01:56 +0000 | [diff] [blame] | 132 | /// ArmNN Runtime |
Teresa Charlin | ad1b3d7 | 2023-03-14 12:10:28 +0000 | [diff] [blame] | 133 | armnn::IRuntime* m_Runtime; |
| 134 | |
| 135 | // Binding information for inputs and outputs |
| 136 | std::vector<armnn::BindingPointInfo> m_InputBindings; |
| 137 | std::vector<armnn::BindingPointInfo> m_OutputBindings; |
| 138 | |
| 139 | }; |
| 140 | |
| 141 | } // armnnDelegate namespace |