When application is in background and in lock state and i receive a call, not able to have remote stream or voice

[Arpit Parekh]

We are working on iOS App using Swift.

We are following VideoChat application for two person audio/video call.

We have two classes.

RoomManager - Which has instances of FPWCS library, including WebRTCView.
RoomViewController - Which handles the UI for remote stream and local stream.

Scenario: When two person audio call

1. User1 connects and join the room and publish the remote stream

 public func connect(serverUrl: String,
                        userName: String,
                        roomName: String,
                        isAudioCall: Bool,
                        isOutgoingCall: Bool = false) {
        print("\(#function)")
        self.isAudioOnly = isAudioCall
        self.isOutgoingCall = isOutgoingCall
        //Note: Here initalliay sent event as dis connected, but actual event used is isConnecitng
        self.updateStatus(event: .fpwcsRoomManagerEventDisconnected, isConnecting: true)
        
        let options = FPWCSApi2RoomManagerOptions()
        options.urlServer = serverUrl
        options.username = userName
        do {
            try wcsRoomManager = FPWCSApi2.createRoomManager(options)
            wcsRoomManager?.on(.fpwcsRoomManagerEventConnected, callback: { roomManager in
                print("callback fpwcsRoomManagerEventConnected")
                self.joinRoom(roomName: roomName)
            })
        } catch {
            print("wcsRoomManager Error while creating WCS session: \(error.localizedDescription)")
        }
    }

 private func joinRoom(roomName: String) {
        print(#function)
        let roomOptions = FPWCSApi2RoomOptions()
        roomOptions.name = roomName
        room = wcsRoomManager?.join(roomOptions)
        room?.onStateCallback({  room in
            print("callback room joined")
        
            self.delegate?.onUserJoined()
            self.publishStream(localDisplay: self.localParticipantVideoVW,
                                           shouldRecord: false)
        
       })

 public func publishStream(localDisplay: WebRTCView,
                              shouldRecord: Bool) {
        print("#localStream publishing stream")
        let options = FPWCSApi2StreamOptions()
        options.record = shouldRecord
        
        localStream = room?.publish(localDisplay.videoView,
                                    with: options)
        
        localStream?.on(.fpwcsStreamStatusPublishing, callback: { [weak self] stream in
            print("#localStream particiapnt stream published successfully.")
         
            if self.isAudioOnly {
                print("#localStream isAudioOnly")
                stream?.muteVideo()
            }
            self.delegate?.onStreamPublished()
        })

2. User2 receives a call when app is in the background and in lock state, and receives a call using callkit in below function,

 func provider(_ provider: CXProvider, perform action: CXAnswerCallAction)

We connect and join the room in background.


3. While publishing stream, we are not able to hear the voice at remote end.
Is there any way to take WebRTCView in background state or publishing stream for audio.

 

[Max]

Good day.

Is there any way to take WebRTCView in background state or publishing stream for audio.

You can't capture audio or video when application is in background. This is iOS limitation.