1 /* 2 * Copyright (c) 2024-2025 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 uint32_t cardNum_{0}; 55 bool isCapturer_{false}; 56 bool isPlayer_{false}; 57 inline bool operator==(const UsbAudioDevice &o) const 58 { 59 return usbAddr_ == o.usbAddr_; 60 } 61 }; 62 63 class AudioUsbManager { 64 public: 65 class EventSubscriber : public EventFwk::CommonEventSubscriber { 66 public: EventSubscriber(const EventFwk::CommonEventSubscribeInfo & subscribeInfo)67 explicit EventSubscriber(const EventFwk::CommonEventSubscribeInfo &subscribeInfo) 68 : EventFwk::CommonEventSubscriber(subscribeInfo) {} 69 void OnReceiveEvent(const EventFwk::CommonEventData &data) override; 70 }; 71 72 static AudioUsbManager &GetInstance(); 73 static map<UsbAddr, SoundCard> GetUsbSoundCardMap(); 74 static int32_t GetUsbAudioDevices(vector<UsbAudioDevice> &result); 75 76 void Init(std::shared_ptr<IDeviceStatusObserver> observer); 77 void Deinit(); 78 void SubscribeEvent(); 79 80 private: 81 AudioUsbManager() = default; 82 void RefreshUsbAudioDevices(); 83 void NotifyDevice(const UsbAudioDevice &device, const bool isConnected); 84 void HandleAudioDeviceEvent(pair<UsbAudioDevice, bool> &&p); 85 bool FillUsbAudioDevice(UsbAudioDevice &device); 86 // must be called in mutex_ lock 87 void UpdateDevice(const UsbAudioDevice &dev, std::__wrap_iter<UsbAudioDevice *> &it); 88 89 std::shared_ptr<IDeviceStatusObserver> observer_{nullptr}; 90 std::shared_ptr<EventSubscriber> eventSubscriber_{nullptr}; 91 vector<UsbAudioDevice> audioDevices_; 92 map<UsbAddr, SoundCard> soundCardMap_; 93 94 bool initialized_{false}; 95 mutex mutex_; 96 }; 97 98 } // namespace AudioStandard 99 } // namespace OHOS 100 101 #endif