TRTC iOS 屏幕分享功能实践(二)

func startScreenShare() {
        if #available(iOS 12.0, *) {
            let params = TRTCVideoEncParam()
            params.videoResolution = TRTCVideoResolution._1280_720
            params.videoFps = 10
            params.videoBitrate = 1800
            TRTCCloud.sharedInstance()?.startScreenCapture(byReplaykit: params, appGroup: "xxx")
            TRTCBroadcastExtensionLauncher.launch()
        }
    }

class SampleHandler: RPBroadcastSampleHandler, TXReplayKitExtDelegate {
    override func broadcastStarted(withSetupInfo setupInfo: [String : NSObject]?) {
        // User has requested to start the broadcast. Setup info from the UI extension can be supplied but optional.
        TXReplayKitExt.sharedInstance().setup(withAppGroup: "xxx", delegate: self)
    }
    
    override func broadcastPaused() {
        // User has requested to pause the broadcast. Samples will stop being delivered.
    }
    
    override func broadcastResumed() {
        // User has requested to resume the broadcast. Samples delivery will resume.
    }
    
    override func broadcastFinished() {
        // User has requested to finish the broadcast.
        TXReplayKitExt.sharedInstance().finishBroadcast()
    }
    
    override func processSampleBuffer(_ sampleBuffer: CMSampleBuffer, with sampleBufferType: RPSampleBufferType) {
        switch sampleBufferType {
        case RPSampleBufferType.video:
            // Handle video sample buffer
            TXReplayKitExt.sharedInstance().sendVideoSampleBuffer(sampleBuffer)
            break
        case RPSampleBufferType.audioApp:
            // Handle audio sample buffer for app audio
            break
        case RPSampleBufferType.audioMic:
            // Handle audio sample buffer for mic audio
            break
        @unknown default:
            // Handle other sample buffer types
            fatalError("Unknown type of sample buffer")
        }
    }
    
    //MARK: - action
    
    func sendMsgToHostApp(title: String, msg: String, userInfo: [String: Any]) {
        
    }
    
    func startCapture() {
        
    }
    
    func addCFObserver(name: String, callback: @escaping CFNotificationCallback) {
        CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),
                                        nil,
                                        callback,
                                        name as CFString,
                                        nil,
                                        .deliverImmediately)
    }
    
    func addAllObserver() {
        self.addCFObserver(name: "start") { (center, observer, name, object, info) in
            
        }
        
        self.addCFObserver(name: "pause") { (center, observer, name, object, info) in
            
        }
        
        self.addCFObserver(name: "stop") { (center, observer, name, object, info) in
            
        }
    }
    
    //MARK: - TXReplayKitExtDelegate
    func broadcastFinished(_ broadcast: TXReplayKitExt, reason: TXReplayKitExtReason) {
        var tip = ""
        switch reason {
        case .requestedByMain:
            tip = "屏幕共享已结束"
        case .disconnected:
            tip = "应用断开"
        case .versionMismatch:
            tip = "SDK版本不符"
            
        default:
            tip = ""
        }
        
        let error = NSError(domain: String(describing: self),
                            code: 0,
                            userInfo: [NSLocalizedFailureReasonErrorKey: tip])
        self.finishBroadcastWithError(error)
    }
}