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_hardware_automotive_vehicle_V2_0_impl_VehicleHalEmulator_H_ 18 #define android_hardware_automotive_vehicle_V2_0_impl_VehicleHalEmulator_H_ 19 20 #include <log/log.h> 21 #include <memory> 22 #include <thread> 23 #include <vector> 24 25 #include "vhal_v2_0/VehicleHal.h" 26 27 #include "CommBase.h" 28 #include "VehicleHalProto.pb.h" 29 30 namespace android { 31 namespace hardware { 32 namespace automotive { 33 namespace vehicle { 34 namespace V2_0 { 35 36 namespace impl { 37 38 class VehicleEmulator; // Forward declaration. 39 40 /** Extension of VehicleHal that used by VehicleEmulator. */ 41 class EmulatedVehicleHalIface : public VehicleHal { 42 public: 43 virtual bool setPropertyFromVehicle(const VehiclePropValue& propValue) = 0; 44 virtual std::vector<VehiclePropValue> getAllProperties() const = 0; 45 registerEmulator(VehicleEmulator * emulator)46 void registerEmulator(VehicleEmulator* emulator) { 47 ALOGI("%s, emulator: %p", __func__, emulator); 48 std::lock_guard<std::mutex> g(mEmulatorLock); 49 mEmulator = emulator; 50 } 51 52 protected: getEmulatorOrDie()53 VehicleEmulator* getEmulatorOrDie() { 54 std::lock_guard<std::mutex> g(mEmulatorLock); 55 if (mEmulator == nullptr) abort(); 56 return mEmulator; 57 } 58 59 private: 60 mutable std::mutex mEmulatorLock; 61 VehicleEmulator* mEmulator; 62 }; 63 64 struct CommFactory { 65 static std::unique_ptr<CommBase> create(); 66 }; 67 68 /** 69 * Emulates vehicle by providing controlling interface from host side either through ADB or Pipe. 70 */ 71 class VehicleEmulator { 72 public: 73 VehicleEmulator(EmulatedVehicleHalIface* hal, 74 std::unique_ptr<CommBase> comm = CommFactory::create()) 75 : mHal { hal }, 76 mComm(comm.release()), 77 mThread { &VehicleEmulator::rxThread, this} { 78 mHal->registerEmulator(this); 79 } 80 virtual ~VehicleEmulator(); 81 82 void doSetValueFromClient(const VehiclePropValue& propValue); 83 84 private: 85 using EmulatorMessage = emulator::EmulatorMessage; 86 87 void doGetConfig(EmulatorMessage& rxMsg, EmulatorMessage& respMsg); 88 void doGetConfigAll(EmulatorMessage& rxMsg, EmulatorMessage& respMsg); 89 void doGetProperty(EmulatorMessage& rxMsg, EmulatorMessage& respMsg); 90 void doGetPropertyAll(EmulatorMessage& rxMsg, EmulatorMessage& respMsg); 91 void doSetProperty(EmulatorMessage& rxMsg, EmulatorMessage& respMsg); 92 void txMsg(emulator::EmulatorMessage& txMsg); 93 void parseRxProtoBuf(std::vector<uint8_t>& msg); 94 void populateProtoVehicleConfig(emulator::VehiclePropConfig* protoCfg, 95 const VehiclePropConfig& cfg); 96 void populateProtoVehiclePropValue(emulator::VehiclePropValue* protoVal, 97 const VehiclePropValue* val); 98 void rxMsg(); 99 void rxThread(); 100 101 private: 102 std::atomic<bool> mExit { false }; 103 EmulatedVehicleHalIface* mHal; 104 std::unique_ptr<CommBase> mComm; 105 std::thread mThread; 106 }; 107 108 } // impl 109 110 } // namespace V2_0 111 } // namespace vehicle 112 } // namespace automotive 113 } // namespace hardware 114 } // namespace android 115 116 #endif // android_hardware_automotive_vehicle_V2_0_impl_VehicleHalEmulator_H_ 117