1 /* 2 * Copyright (C) 2016-2019 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 #include "EvsEnumerator.h" 18 #include "EvsGlDisplay.h" 19 #include "ServiceNames.h" 20 21 #include <hidl/HidlTransportSupport.h> 22 #include <utils/Errors.h> 23 #include <utils/Log.h> 24 #include <utils/StrongPointer.h> 25 26 #include <unistd.h> 27 28 #include <atomic> 29 30 // libhidl: 31 using ::android::hardware::configureRpcThreadpool; 32 using ::android::hardware::joinRpcThreadpool; 33 34 // Generated HIDL files 35 using ::android::frameworks::automotive::display::V1_0::IAutomotiveDisplayProxyService; 36 using ::android::hardware::automotive::evs::V1_1::IEvsDisplay; 37 using ::android::hardware::automotive::evs::V1_1::IEvsEnumerator; 38 39 using ::android::hardware::automotive::evs::V1_1::implementation::EvsEnumerator; 40 main()41int main() { 42 LOG(INFO) << "EVS Hardware Enumerator service is starting"; 43 44 android::sp<IAutomotiveDisplayProxyService> carWindowService = 45 IAutomotiveDisplayProxyService::getService("default"); 46 if (carWindowService == nullptr) { 47 LOG(ERROR) << "Cannot use AutomotiveDisplayProxyService. Exiting."; 48 return 1; 49 } 50 51 #ifdef EVS_DEBUG 52 SetMinimumLogSeverity(android::base::DEBUG); 53 #endif 54 55 // Start a thread to monitor hotplug devices 56 std::atomic<bool> running{true}; 57 std::thread hotplugHandler(EvsEnumerator::EvsHotplugThread, std::ref(running)); 58 59 android::sp<IEvsEnumerator> service = new EvsEnumerator(carWindowService); 60 61 configureRpcThreadpool(1, true /* callerWillJoin */); 62 63 // Register our service -- if somebody is already registered by our name, 64 // they will be killed (their thread pool will throw an exception). 65 android::status_t status = service->registerAsService(kEnumeratorServiceName); 66 if (status == android::OK) { 67 LOG(DEBUG) << kEnumeratorServiceName << " is ready."; 68 joinRpcThreadpool(); 69 } else { 70 LOG(ERROR) << "Could not register service " << kEnumeratorServiceName << " (" << status 71 << ")."; 72 } 73 74 // Exit a hotplug device thread 75 running = false; 76 if (hotplugHandler.joinable()) { 77 hotplugHandler.join(); 78 } 79 80 // In normal operation, we don't expect the thread pool to exit 81 LOG(ERROR) << "EVS Hardware Enumerator is shutting down"; 82 return 1; 83 } 84