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 #pragma once 18 19 #include <android/media/audio/common/AudioHalEngineConfig.h> 20 #include <android/media/SurroundSoundConfig.h> 21 #include <media/audiohal/DeviceHalInterface.h> 22 #include <utils/Errors.h> 23 #include <utils/RefBase.h> 24 #include <vector> 25 26 #include "AudioHalVersionInfo.h" 27 28 namespace android { 29 30 class DevicesFactoryHalCallback : public RefBase 31 { 32 public: 33 virtual void onNewDevicesAvailable() = 0; 34 }; 35 36 class DevicesFactoryHalInterface : public RefBase 37 { 38 public: 39 virtual status_t getDeviceNames(std::vector<std::string> *names) = 0; 40 41 // Opens a device with the specified name. To close the device, it is 42 // necessary to release references to the returned object. 43 virtual status_t openDevice(const char *name, sp<DeviceHalInterface> *device) = 0; 44 45 // Sets a DevicesFactoryHalCallback to notify the client. 46 // The callback can be only set once. 47 virtual status_t setCallbackOnce(sp<DevicesFactoryHalCallback> callback) = 0; 48 49 virtual android::detail::AudioHalVersionInfo getHalVersion() const = 0; 50 51 virtual status_t getSurroundSoundConfig(media::SurroundSoundConfig *config) = 0; 52 53 virtual status_t getEngineConfig(media::audio::common::AudioHalEngineConfig *config) = 0; 54 55 static sp<DevicesFactoryHalInterface> create(); 56 57 protected: 58 // Subclasses can not be constructed directly by clients. DevicesFactoryHalInterface()59 DevicesFactoryHalInterface() {} 60 ~DevicesFactoryHalInterface()61 virtual ~DevicesFactoryHalInterface() {} 62 }; 63 64 } // namespace android 65