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45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
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---
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title: NNAPI
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parent: Execution Providers
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grand_parent: Reference
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nav_order: 7
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---
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# NNAPI Execution Provider
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{: .no_toc }
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[Android Neural Networks API (NNAPI)](https://developer.android.com/ndk/guides/neuralnetworks) is a unified interface to CPU, GPU, and NN accelerators on Android.
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## Contents
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{: .no_toc }
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* TOC placeholder
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{:toc}
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## Minimum requirements
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The NNAPI EP requires Android devices with Android 8.1 or higher, it is recommended to use Android devices with Android 9 or higher to achieve optimal performance.
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## Build NNAPI EP
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For build instructions, please see the [BUILD page](../../how-to/build.md#Android-NNAPI-Execution-Provider).
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## Using NNAPI EP in C/C++
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To use NNAPI EP for inferencing, please register it as below.
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```
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string log_id = "Foo";
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auto logging_manager = std::make_unique<LoggingManager>
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(std::unique_ptr<ISink>{new CLogSink{}},
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static_cast<Severity>(lm_info.default_warning_level),
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false,
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LoggingManager::InstanceType::Default,
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&log_id)
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Environment::Create(std::move(logging_manager), env)
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InferenceSession session_object{so,env};
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session_object.RegisterExecutionProvider(std::make_unique<::onnxruntime::NnapiExecutionProvider>());
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status = session_object.Load(model_file_name);
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```
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The C API details are [here](../api/c-api.md).
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