1/* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef ANDROID_ML_NN_SAMPLE_DRIVER_SAMPLE_DRIVER_H 18#define ANDROID_ML_NN_SAMPLE_DRIVER_SAMPLE_DRIVER_H 19 20#include "CpuExecutor.h" 21#include "HalInterfaces.h" 22#include "NeuralNetworks.h" 23 24#include <string> 25 26namespace android { 27namespace nn { 28namespace sample_driver { 29 30// Base class used to create sample drivers for the NN HAL. This class 31// provides some implementation of the more common functions. 32// 33// Since these drivers simulate hardware, they must run the computations 34// on the CPU. An actual driver would not do that. 35class SampleDriver : public IDevice { 36public: 37 SampleDriver(const char* name) : mName(name) {} 38 ~SampleDriver() override {} 39 Return<ErrorStatus> prepareModel(const Model& model, 40 const sp<IPreparedModelCallback>& callback) override; 41 Return<DeviceStatus> getStatus() override; 42 43 // Starts and runs the driver service. Typically called from main(). 44 // This will return only once the service shuts down. 45 int run(); 46protected: 47 std::string mName; 48}; 49 50class SamplePreparedModel : public IPreparedModel { 51public: 52 SamplePreparedModel(const Model& model) 53 : // Make a copy of the model, as we need to preserve it. 54 mModel(model) {} 55 ~SamplePreparedModel() override {} 56 bool initialize(); 57 Return<ErrorStatus> execute(const Request& request, 58 const sp<IExecutionCallback>& callback) override; 59 60private: 61 void asyncExecute(const Request& request, const sp<IExecutionCallback>& callback); 62 63 Model mModel; 64 std::vector<RunTimePoolInfo> mPoolInfos; 65}; 66 67} // namespace sample_driver 68} // namespace nn 69} // namespace android 70 71#endif // ANDROID_ML_NN_SAMPLE_DRIVER_SAMPLE_DRIVER_H 72