| // |
| // Copyright © 2020, 2023 Arm Ltd and Contributors. All rights reserved. |
| // SPDX-License-Identifier: MIT |
| // |
| #include "armnn_delegate.hpp" |
| #include <armnn/Logging.hpp> |
| #include <armnn/utility/NumericCast.hpp> |
| |
| #include <iostream> |
| #include <tensorflow/lite/minimal_logging.h> |
| |
| namespace tflite |
| { |
| |
| /** |
| * This file defines two symbols that need to be exported to use the TFLite external delegate provider. This is a plugin |
| * that can be used for fast integration of delegates into benchmark tests and other tools. It allows loading of |
| * a dynamic delegate library at runtime. |
| * |
| * The external delegate also has Tensorflow Lite Python bindings. Therefore the dynamic external delegate |
| * can be directly used with Tensorflow Lite Python APIs. |
| * |
| * See tensorflow/lite/delegates/external for details or visit the tensorflow guide |
| * [here](https://www.tensorflow.org/lite/performance/implementing_delegate#option_2_leverage_external_delegate) |
| */ |
| |
| extern "C" |
| { |
| |
| /** |
| * Implementation of the TfLite external delegate plugin |
| * |
| * For details about what options_keys and option_values are supported please see: |
| * armnnDelegate::DelegateOptions::DelegateOptions(char const* const*, char const* const*,size_t,void (*)(const char*)) |
| */ |
| TfLiteDelegate* tflite_plugin_create_delegate(char** options_keys, |
| char** options_values, |
| size_t num_options, |
| void (*report_error)(const char*)) |
| { |
| // Returning null indicates an error during delegate creation, we initialize with that |
| TfLiteDelegate* delegate = nullptr; |
| try |
| { |
| armnnDelegate::DelegateOptions options (options_keys, options_values, num_options, (*report_error)); |
| delegate = TfLiteArmnnDelegateCreate(options); |
| } |
| catch (const std::exception& ex) |
| { |
| if(report_error) |
| { |
| report_error(ex.what()); |
| } |
| } |
| return delegate; |
| } |
| |
| /** Destroy a given delegate plugin |
| * |
| * @param[in] delegate Delegate to destruct |
| */ |
| void tflite_plugin_destroy_delegate(TfLiteDelegate* delegate) |
| { |
| armnnDelegate::TfLiteArmnnDelegateDelete(delegate); |
| } |
| |
| } // extern "C" |
| } // namespace tflite |