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 26 namespace android { 27 namespace nn { 28 namespace 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. 35 class SampleDriver : public IDevice { 36 public: SampleDriver(const char * name)37 SampleDriver(const char* name) : mName(name) {} ~SampleDriver()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(); 46 protected: 47 std::string mName; 48 }; 49 50 class SamplePreparedModel : public IPreparedModel { 51 public: SamplePreparedModel(const Model & model)52 SamplePreparedModel(const Model& model) 53 : // Make a copy of the model, as we need to preserve it. 54 mModel(model) {} ~SamplePreparedModel()55 ~SamplePreparedModel() override {} 56 bool initialize(); 57 Return<ErrorStatus> execute(const Request& request, 58 const sp<IExecutionCallback>& callback) override; 59 60 private: 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