我正在使用Twilio iOS框架在会议室中进行连接。 在下面的“单击连接房间”按钮上，是我使用的代码
let recorder = RPScreenRecorder.shared()
recorder.isMicrophoneEnabled = false
recorder.isCameraEnabled = false
// The source produces either downscaled buffers with smoother motion, or an HD screen recording.
videoSource = ReplayKitVideoSource(isScreencast: true, telecineOptions: ReplayKitVideoSource.TelecineOptions.disabled)
screenTrack = LocalVideoTrack(source: videoSource!,
enabled: true,
name: "Screen")
recorder.startCapture(handler: { (sampleBuffer, type, error) in
if error != nil {
print("Capture error: ", error as Any)
return
}
switch type {
case RPSampleBufferType.video:
self.videoSource?.processFrame(sampleBuffer: sampleBuffer)
break
case RPSampleBufferType.audioApp:
break
case RPSampleBufferType.audioMic:
// We use `TVIDefaultAudioDevice` to capture and playback audio for conferencing.
break
}
}) { (error) in
if error != nil {
print("Screen capture error: ", error as Any)
} else {
print("Screen capture started.")
}
}
if (accessToken == "TWILIO_ACCESS_TOKEN") {
do {
accessToken = try TokenUtils.fetchToken(url: tokenUrl)
} catch {
let message = "Failed to fetch access token"
logMessage(messageText: message)
return
}
}
// Prepare local media which we will share with Room Participants.
self.prepareLocalMedia()
// Preparing the connect options with the access token that we fetched (or hardcoded).
let connectOptions = ConnectOptions(token: accessToken) { (builder) in
// Use the local media that we prepared earlier.
builder.audioTracks = self.localAudioTrack != nil ? [self.localAudioTrack!] : [LocalAudioTrack]()
builder.videoTracks = self.localVideoTrack != nil ? [self.localVideoTrack!, self.screenTrack!] : [LocalVideoTrack]()
// Use the preferred audio codec
if let preferredAudioCodec = Settings.shared.audioCodec {
builder.preferredAudioCodecs = [preferredAudioCodec]
}
// Use the preferred video codec
if let preferredVideoCodec = Settings.shared.videoCodec {
builder.preferredVideoCodecs = [preferredVideoCodec]
}
// Use the preferred encoding parameters
if let encodingParameters = Settings.shared.getEncodingParameters() {
builder.encodingParameters = encodingParameters
}
// Use the preferred signaling region
if let signalingRegion = Settings.shared.signalingRegion {
builder.region = signalingRegion
}
builder.roomName = self.roomTextField.text
}
// Connect to the Room using the options we provided.
room = TwilioVideoSDK.connect(options: connectOptions, delegate: self)
logMessage(messageText: "Attempting to connect to room \(String(describing: self.roomTextField.text))")
当我将组与远程参与者连接时，我想与远程参与者共享屏幕。
为了实现此功能，我已将“ ReplayKitExample”与应用程序内捕获方法一起使用。但是无法做到这一点。
远程参与者无法看到屏幕共享内容。
与此相关的任何事情都与屏幕共享无关，并且正在寻找实现它的投入。
我想与远程参与者共享屏幕。
答案 0 :(得分：1)
它的发生是因为您试图同时发送“ cameraSource”和“ videoSource”这两个数据，而在发送“ viseoSource”之前必须取消订阅“ cameraSource”。 您可以参考以下代码：
// MARK：-通过replaykit进行屏幕共享 扩展CallRoomViewController：RPScreenRecorderDelegate {
func broadCastButtonTapped(){
guard screenRecorder.isAvailable else {
print("Not able to Broadcast")
return
}
print("Can Broadcast")
if self.videoSource != nil {
self.stopConference()
} else {
self.startConference()
}
}
func publishVideoTrack(){
if let participant = self.room?.localParticipant,
let videoTrack = self.localVideoTrack {
participant.publishVideoTrack(videoTrack)
}
}
func unpublishVideoTrack(){
if let participant = self.room?.localParticipant,
let videoTrack = self.localVideoTrack {
participant.unpublishVideoTrack(videoTrack)
}
}
func stopConference() {
self.unpublishVideoTrack()
self.localVideoTrack = nil
self.videoSource = nil
self.localVideoTrack = LocalVideoTrack(source: cameraSource!, enabled: true, name: "Camera")
screenRecorder.stopCapture{ (captureError) in
if let error = captureError {
print("Screen capture stop error: ", error as Any)
} else {
print("Screen capture stopped.")
self.publishVideoTrack()
}
}
}
func startConference() {
self.unpublishVideoTrack()
self.localVideoTrack = nil
// We are only using ReplayKit to capture the screen.
// Use a LocalAudioTrack to capture the microphone for sharing audio in the room.
screenRecorder.isMicrophoneEnabled = false
// Use a LocalVideoTrack with a CameraSource to capture the camera for sharing camera video in the room.
screenRecorder.isCameraEnabled = false
// The source produces either downscaled buffers with smoother motion, or an HD screen recording.
self.videoSource = ReplayKitVideoSource(isScreencast: true,
telecineOptions: ReplayKitVideoSource.TelecineOptions.p60to24or25or30)
self.localVideoTrack = LocalVideoTrack(source: videoSource!,
enabled: true,
name: "Screen")
let videoCodec = Settings.shared.videoCodec ?? Vp8Codec()!
let (_, outputFormat) = ReplayKitVideoSource.getParametersForUseCase(codec: videoCodec,
isScreencast: true,
telecineOptions:ReplayKitVideoSource.TelecineOptions.p60to24or25or30)
self.videoSource?.requestOutputFormat(outputFormat)
screenRecorder.startCapture(handler: { (sampleBuffer, type, error) in
if error != nil {
print("Capture error: ", error as Any)
return
}
switch type {
case RPSampleBufferType.video:
self.videoSource?.processFrame(sampleBuffer: sampleBuffer)
break
case RPSampleBufferType.audioApp:
break
case RPSampleBufferType.audioMic:
// We use `TVIDefaultAudioDevice` to capture and playback audio for conferencing.
break
default:
print(error ?? "screenRecorder error")
}
}) { (error) in
if error != nil {
print("Screen capture error: ", error as Any)
} else {
print("Screen capture started.")
self.publishVideoTrack()
}
}
}
}
您可以从viewDidLoad（）连接房间
func connectToChatRoom(){
// Configure access token either from server or manually.
// If the default wasn't changed, try fetching from server.
accessToken = self.callRoomDetail.charRoomAccessToken
guard accessToken != "TWILIO_ACCESS_TOKEN" else {
let message = "Failed to fetch access token"
print( message)
return
}
// Prepare local media which we will share with Room Participants.
self.prepareLocalMedia()
// Preparing the connect options with the access token that we fetched (or hardcoded).
let connectOptions = ConnectOptions(token: accessToken) { (builder) in
// The name of the Room where the Client will attempt to connect to. Please note that if you pass an empty
// Room `name`, the Client will create one for you. You can get the name or sid from any connected Room.
builder.roomName = self.callRoomDetail.chatRoomName
// Use the local media that we prepared earlier.
if let audioTrack = self.localAudioTrack {
builder.audioTracks = [ audioTrack ]
}
if let videoTrack = self.localVideoTrack {
builder.videoTracks = [ videoTrack ]
}
// Use the preferred audio codec
if let preferredAudioCodec = Settings.shared.audioCodec {
builder.preferredAudioCodecs = [preferredAudioCodec]
}
// Use the preferred video codec
if let preferredVideoCodec = Settings.shared.videoCodec {
builder.preferredVideoCodecs = [preferredVideoCodec]
}
// Use the preferred encoding parameters
let videoCodec = Settings.shared.videoCodec ?? Vp8Codec()!
let (encodingParams, _) = ReplayKitVideoSource.getParametersForUseCase(codec: videoCodec,
isScreencast: true,
telecineOptions:ReplayKitVideoSource.TelecineOptions.p60to24or25or30)
builder.encodingParameters = encodingParams
// Use the preferred signaling region
if let signalingRegion = Settings.shared.signalingRegion {
builder.region = signalingRegion
}
builder.isAutomaticSubscriptionEnabled = true
builder.isNetworkQualityEnabled = true
builder.networkQualityConfiguration = NetworkQualityConfiguration(localVerbosity: .minimal,
remoteVerbosity: .minimal)
}
// Connect to the Room using the options we provided.
room = TwilioVideoSDK.connect(options: connectOptions, delegate: self)
print( "Attempting to connect to room \(self.callRoomDetail.chatRoomName ?? ""))")
self.showRoomUI(inRoom: true)
}
您可以从twilio存储库https://github.com/twilio/video-quickstart-ios/tree/master/ReplayKitExample
中获取ReplayKitVideoSource文件和其他文件。