1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 #ifndef AUDIO_USB_MANAGER_H 16 #define AUDIO_USB_MANAGER_H 17 18 #include <mutex> 19 #include <map> 20 #include <vector> 21 #include "common_event_subscriber.h" 22 #include "idevice_status_observer.h" 23 24 namespace OHOS { 25 namespace AudioStandard { 26 27 using namespace std; 28 29 string EncUsbAddr(const string &src); 30 31 struct UsbAddr { 32 uint8_t busNum_{0}; 33 uint8_t devAddr_{0}; 34 inline bool operator==(const UsbAddr &o) const 35 { 36 return busNum_ == o.busNum_ && devAddr_ == o.devAddr_; 37 } 38 inline bool operator<(const UsbAddr &o) const 39 { 40 return busNum_ < o.busNum_ || (busNum_ == o.busNum_ && devAddr_ < o.devAddr_); 41 } 42 }; 43 44 struct SoundCard { 45 uint32_t cardNum_{0}; 46 string usbBus_; 47 bool isCapturer_{false}; 48 bool isPlayer_{false}; 49 }; 50 51 struct UsbAudioDevice { 52 UsbAddr usbAddr_; 53 string name_; 54 inline bool operator==(const UsbAudioDevice &o) const 55 { 56 return usbAddr_ == o.usbAddr_; 57 } 58 }; 59 60 class AudioUsbManager { 61 public: 62 class EventSubscriber : public EventFwk::CommonEventSubscriber { 63 public: EventSubscriber(const EventFwk::CommonEventSubscribeInfo & subscribeInfo)64 explicit EventSubscriber(const EventFwk::CommonEventSubscribeInfo &subscribeInfo) 65 : EventFwk::CommonEventSubscriber(subscribeInfo) {} 66 void OnReceiveEvent(const EventFwk::CommonEventData &data) override; 67 }; 68 69 static AudioUsbManager& GetInstance(); 70 static map<UsbAddr, SoundCard> GetUsbSoundCardMap(); 71 static vector<UsbAudioDevice> GetUsbAudioDevices(); 72 static vector<UsbAudioDevice> GetPlayerDevices(); 73 static vector<UsbAudioDevice> GetCapturerDevices(); 74 75 void Init(IDeviceStatusObserver *observer); 76 void Deinit(); 77 void SubscribeEvent(); 78 79 private: 80 void HandleUsbAudioDeviceAttach(const UsbAudioDevice &device); 81 void HandleUsbAudioDeviceDetach(const UsbAudioDevice &device); 82 void RefreshUsbAudioDevices(); 83 void NotifyDevice(const UsbAudioDevice &device, const bool isConnected); 84 85 vector<UsbAudioDevice> audioDevices_; 86 map<UsbAddr, SoundCard> soundCardMap_; 87 shared_ptr<EventSubscriber> eventSubscriber_{nullptr}; 88 bool initialized_{false}; 89 90 mutex mutex_; 91 IDeviceStatusObserver *observer_{nullptr}; 92 }; 93 94 } // namespace AudioStandard 95 } // namespace OHOS 96 97 #endif