8. 화면 공유 활성화

<activity 
    android:name="com.tencent.rtmp.video.TXScreenCapture$TXScreenCaptureAssistantActivity" 
    android:theme="@android:style/Theme.Translucent"/>

├── Broadcast.Upload        //녹화 프로세스 Broadcast Upload Extension 코드는 2단계 참고
│   ├── Broadcast.Upload.entitlements       //프로세스 간에 통신하는 AppGroup 정보 설정에 사용
│   ├── Broadcast.UploadDebug.entitlements  //프로세스 간에 통신하는 AppGroup 정보 설정에 사용(debug 환경)
│   ├── Info.plist
│   └── SampleHandler.swift     // 시스템 녹화 데이터 수신에 사용
├── Resource                    // 리소스 파일
├── Runner                      // TRTC 라이트 Demo
├── TXLiteAVSDK_ReplayKitExt.framework      //TXLiteAVSDK_ReplayKitExt SDK


import ReplayKit
import TXLiteAVSDK_ReplayKitExt


let APPGROUP = "group.com.tencent.comm.trtc.demo"

class SampleHandler: RPBroadcastSampleHandler, TXReplayKitExtDelegate {

    let recordScreenKey = Notification.Name.init("TRTCRecordScreenKey")

    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: APPGROUP, 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()
    }

    func broadcastFinished(_ broadcast: TXReplayKitExt, reason: TXReplayKitExtReason) {
        var tip = ""
        switch reason {
        case TXReplayKitExtReason.requestedByMain:
            tip = "화면 공유 종료됨"
            break
        case TXReplayKitExtReason.disconnected:
            tip = "애플리케이션 종료"
            break
        case TXReplayKitExtReason.versionMismatch:
            tip = "통합 오류(SDK 버전 번호 불일치)"
            break
        default:
            break
        }

        let error = NSError(domain: NSStringFromClass(self.classForCoder), code: 0, userInfo: [NSLocalizedFailureReasonErrorKey:tip])
        finishBroadcastWithError(error)
    }

    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")
        }
    }
}


// 화면 공유를 시작하려면 APPGROUP을 앞서 생성한 App Group으로 변경해야 합니다. 
trtcCloud.startScreenCapture(
    TRTCVideoEncParam(
        videoFps: 10,
        videoResolution: TRTCCloudDef.TRTC_VIDEO_RESOLUTION_1280_720,
        videoBitrate: 1600,
        videoResolutionMode: TRTCCloudDef.TRTC_VIDEO_RESOLUTION_MODE_PORTRAIT,
    ),
    iosAppGroup,
);

// 화면 공유 종료
await trtcCloud.stopScreenCapture();


// 화면 공유 실행 이벤트 공지는 TRTCCloudListener를 통해 수신할 수 있습니다.
onRtcListener(type, param){
    if (type == TRTCCloudListener.onScreenCaptureStarted) {
      //화면 공유 시작
    }
}