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_INTERFACE_H 18 #define ANDROID_HARDWARE_DEVICES_FACTORY_HAL_INTERFACE_H 19 20 #include <media/audiohal/DeviceHalInterface.h> 21 #include <utils/Errors.h> 22 #include <utils/RefBase.h> 23 #include <vector> 24 25 namespace android { 26 27 class DevicesFactoryHalCallback : public RefBase 28 { 29 public: 30 virtual void onNewDevicesAvailable() = 0; 31 }; 32 33 class DevicesFactoryHalInterface : public RefBase 34 { 35 public: 36 // Opens a device with the specified name. To close the device, it is 37 // necessary to release references to the returned object. 38 virtual status_t openDevice(const char *name, sp<DeviceHalInterface> *device) = 0; 39 40 virtual status_t getHalPids(std::vector<pid_t> *pids) = 0; 41 42 // Sets a DevicesFactoryHalCallback to notify the client. 43 // The callback can be only set once. 44 virtual status_t setCallbackOnce(sp<DevicesFactoryHalCallback> callback) = 0; 45 46 virtual float getHalVersion() const = 0; 47 48 static sp<DevicesFactoryHalInterface> create(); 49 50 protected: 51 // Subclasses can not be constructed directly by clients. DevicesFactoryHalInterface()52 DevicesFactoryHalInterface() {} 53 ~DevicesFactoryHalInterface()54 virtual ~DevicesFactoryHalInterface() {} 55 }; 56 57 } // namespace android 58 59 #endif // ANDROID_HARDWARE_DEVICES_FACTORY_HAL_INTERFACE_H 60