public func openLocalMicrophone(completion: CompletionClosure?) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func closeLocalMicrophone() {
    fatalError("\\(#function) must be overridden by subclass")
}

public func setCaptureVolume(volume: Int) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func setOutputVolume(_ volume: Int) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func setAudioRoute(_ route: AudioRoute) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func startCameraTest(
    cameraView: UIView,
    completion: CompletionClosure?
) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func stopCameraTest() {
    fatalError("\\(#function) must be overridden by subclass")
}

public func openLocalCamera(
    isFront: Bool,
    completion: CompletionClosure?
) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func closeLocalCamera() {
    fatalError("\\(#function) must be overridden by subclass")
}

public func switchCamera(isFront: Bool) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func switchMirror(mirrorType: MirrorType) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func updateVideoQuality(_ quality: VideoQuality) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func startScreenShare(appGroup: String) {
    fatalError("\\(#function) must be overridden by subclass")
}

public func stopScreenShare() {
    fatalError("\\(#function) must be overridden by subclass")
}

public func reset() { 
    fatalError("\\(#function) must be overridden by subclass") 
}

// 获取单例实例
let store = DeviceStore.shared

// 订阅状态变化
store.state.subscribe { state in
    print("麦克风状态: \\(state.microphoneStatus)")
    print("摄像头状态: \\(state.cameraStatus)")
    print("网络质量: \\(state.networkInfo.quality)")
}

// 打开麦克风
store.openLocalMicrophone { code, message in
    if code == 0 {
        print("麦克风打开成功")
    }
}

// 打开前置摄像头
store.openLocalCamera(isFront: true) { code, message in
    if code == 0 {
        print("摄像头打开成功")
    }
}