1 /* 2 * Copyright (C) 2016 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_DEVICES_FACTORY_HAL_HIDL_H 18 #define ANDROID_HARDWARE_DEVICES_FACTORY_HAL_HIDL_H 19 20 #include <mutex> 21 #include <vector> 22 23 #include PATH(android/hardware/audio/FILE_VERSION/IDevicesFactory.h) 24 #include <media/audiohal/DevicesFactoryHalInterface.h> 25 #include <utils/Errors.h> 26 #include <utils/RefBase.h> 27 28 #include "DeviceHalHidl.h" 29 30 using ::android::hardware::audio::CPP_VERSION::IDevicesFactory; 31 32 namespace android { 33 34 class DevicesFactoryHalHidl : public DevicesFactoryHalInterface 35 { 36 public: 37 explicit DevicesFactoryHalHidl(sp<IDevicesFactory> devicesFactory); 38 void onFirstRef() override; 39 40 // Opens a device with the specified name. To close the device, it is 41 // necessary to release references to the returned object. 42 status_t openDevice(const char *name, sp<DeviceHalInterface> *device) override; 43 44 status_t getHalPids(std::vector<pid_t> *pids) override; 45 46 status_t setCallbackOnce(sp<DevicesFactoryHalCallback> callback) override; 47 getHalVersion()48 float getHalVersion() const override { return MAJOR_VERSION + (float)MINOR_VERSION / 10; } 49 50 private: 51 friend class ServiceNotificationListener; 52 void addDeviceFactory(sp<IDevicesFactory> factory, bool needToNotify); 53 std::vector<sp<IDevicesFactory>> copyDeviceFactories(); 54 55 std::mutex mLock; 56 std::vector<sp<IDevicesFactory>> mDeviceFactories; // GUARDED_BY(mLock) 57 wp<DevicesFactoryHalCallback> mCallback; // GUARDED_BY(mLock) 58 bool mHaveUndeliveredNotifications = false; // GUARDED_BY(mLock) 59 60 virtual ~DevicesFactoryHalHidl() = default; 61 }; 62 63 } // namespace android 64 65 #endif // ANDROID_HARDWARE_DEVICES_FACTORY_HAL_HIDL_H 66