iOS screen share (#133)

2022-07-10 22:43:20 +09:00
parent bcfea1e625
commit 531cbd1676
16 changed files with 838 additions and 21 deletions
@@ -0,0 +1,37 @@
+//
+//  Atomic.swift
+//  Broadcast Extension
+//
+//  Created by Maksym Shcheglov.
+//  https://www.onswiftwings.com/posts/atomic-property-wrapper/
+//
+
+import Foundation
+
+@propertyWrapper
+struct Atomic<Value> {
+
+    private var value: Value
+    private let lock = NSLock()
+
+    init(wrappedValue value: Value) {
+        self.value = value
+    }
+
+    var wrappedValue: Value {
+        get { load() }
+        set { store(newValue: newValue) }
+    }
+
+    func load() -> Value {
+        lock.lock()
+        defer { lock.unlock() }
+        return value
+    }
+
+    mutating func store(newValue: Value) {
+        lock.lock()
+        defer { lock.unlock() }
+        value = newValue
+    }
+}
@@ -0,0 +1,29 @@
+//
+//  DarwinNotificationCenter.swift
+//  Broadcast Extension
+//
+//  Created by Alex-Dan Bumbu on 23/03/2021.
+//  Copyright © 2021 8x8, Inc. All rights reserved.
+//
+
+import Foundation
+
+enum DarwinNotification: String {
+    case broadcastStarted = "iOS_BroadcastStarted"
+    case broadcastStopped = "iOS_BroadcastStopped"
+}
+
+class DarwinNotificationCenter {
+    
+    static let shared = DarwinNotificationCenter()
+    
+    private let notificationCenter: CFNotificationCenter
+    
+    init() {
+        notificationCenter = CFNotificationCenterGetDarwinNotifyCenter()
+    }
+    
+    func postNotification(_ name: DarwinNotification) {
+        CFNotificationCenterPostNotification(notificationCenter, CFNotificationName(rawValue: name.rawValue as CFString), nil, nil, true)
+    }
+}
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.broadcast-services-upload</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).SampleHandler</string>
+		<key>RPBroadcastProcessMode</key>
+		<string>RPBroadcastProcessModeSampleBuffer</string>
+	</dict>
+</dict>
+</plist>
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.io.livekit.example.flutter</string>
+	</array>
+</dict>
+</plist>
@@ -0,0 +1,103 @@
+//
+//  SampleHandler.swift
+//  Broadcast Extension
+//
+//  Created by Alex-Dan Bumbu on 04.06.2021.
+//
+
+import ReplayKit
+import OSLog
+
+let broadcastLogger = OSLog(subsystem: "io.livekit.example.flutter", category: "Broadcast")
+private enum Constants {
+    // the App Group ID value that the app and the broadcast extension targets are setup with. It differs for each app.
+    static let appGroupIdentifier = "group.io.livekit.example.flutter"
+}
+
+class SampleHandler: RPBroadcastSampleHandler {
+    
+    private var clientConnection: SocketConnection?
+    private var uploader: SampleUploader?
+    
+    private var frameCount: Int = 0
+    
+    var socketFilePath: String {
+      let sharedContainer = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: Constants.appGroupIdentifier)
+        return sharedContainer?.appendingPathComponent("rtc_SSFD").path ?? ""
+    }
+    
+    override init() {
+      super.init()
+        if let connection = SocketConnection(filePath: socketFilePath) {
+          clientConnection = connection
+          setupConnection()
+          
+          uploader = SampleUploader(connection: connection)
+        }
+        os_log(.debug, log: broadcastLogger, "%{public}s", socketFilePath)
+    }
+
+    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.
+        frameCount = 0
+        
+        DarwinNotificationCenter.shared.postNotification(.broadcastStarted)
+        openConnection()
+    }
+    
+    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.
+        DarwinNotificationCenter.shared.postNotification(.broadcastStopped)
+        clientConnection?.close()
+    }
+    
+    override func processSampleBuffer(_ sampleBuffer: CMSampleBuffer, with sampleBufferType: RPSampleBufferType) {
+        switch sampleBufferType {
+        case RPSampleBufferType.video:
+            uploader?.send(sample: sampleBuffer)
+        default:
+            break
+        }
+    }
+}
+
+private extension SampleHandler {
+  
+    func setupConnection() {
+        clientConnection?.didClose = { [weak self] error in
+            os_log(.debug, log: broadcastLogger, "client connection did close \(String(describing: error))")
+          
+            if let error = error {
+                self?.finishBroadcastWithError(error)
+            } else {
+                // the displayed failure message is more user friendly when using NSError instead of Error
+                let JMScreenSharingStopped = 10001
+                let customError = NSError(domain: RPRecordingErrorDomain, code: JMScreenSharingStopped, userInfo: [NSLocalizedDescriptionKey: "Screen sharing stopped"])
+                self?.finishBroadcastWithError(customError)
+            }
+        }
+    }
+    
+    func openConnection() {
+        let queue = DispatchQueue(label: "broadcast.connectTimer")
+        let timer = DispatchSource.makeTimerSource(queue: queue)
+        timer.schedule(deadline: .now(), repeating: .milliseconds(100), leeway: .milliseconds(500))
+        timer.setEventHandler { [weak self] in
+            guard self?.clientConnection?.open() == true else {
+                return
+            }
+            
+            timer.cancel()
+        }
+        
+        timer.resume()
+    }
+}
@@ -0,0 +1,147 @@
+//
+//  SampleUploader.swift
+//  Broadcast Extension
+//
+//  Created by Alex-Dan Bumbu on 22/03/2021.
+//  Copyright © 2021 8x8, Inc. All rights reserved.
+//
+
+import Foundation
+import ReplayKit
+import OSLog
+
+private enum Constants {
+    static let bufferMaxLength = 10240
+}
+
+class SampleUploader {
+    
+    private static var imageContext = CIContext(options: nil)
+    
+    @Atomic private var isReady = false
+    private var connection: SocketConnection
+  
+    private var dataToSend: Data?
+    private var byteIndex = 0
+  
+    private let serialQueue: DispatchQueue
+    
+    init(connection: SocketConnection) {
+        self.connection = connection
+        self.serialQueue = DispatchQueue(label: "org.jitsi.meet.broadcast.sampleUploader")
+      
+        setupConnection()
+    }
+  
+    @discardableResult func send(sample buffer: CMSampleBuffer) -> Bool {
+        guard isReady else {
+            return false
+        }
+        
+        isReady = false
+
+        dataToSend = prepare(sample: buffer)
+        byteIndex = 0
+
+        serialQueue.async { [weak self] in
+            self?.sendDataChunk()
+        }
+        
+        return true
+    }
+}
+
+private extension SampleUploader {
+    
+    func setupConnection() {
+        connection.didOpen = { [weak self] in
+            self?.isReady = true
+        }
+        connection.streamHasSpaceAvailable = { [weak self] in
+            self?.serialQueue.async {
+                if let success = self?.sendDataChunk() {
+                    self?.isReady = !success
+                }
+            }
+        }
+    }
+    
+    @discardableResult func sendDataChunk() -> Bool {
+        guard let dataToSend = dataToSend else {
+            return false
+        }
+      
+        var bytesLeft = dataToSend.count - byteIndex
+        var length = bytesLeft > Constants.bufferMaxLength ? Constants.bufferMaxLength : bytesLeft
+
+        length = dataToSend[byteIndex..<(byteIndex + length)].withUnsafeBytes {
+            guard let ptr = $0.bindMemory(to: UInt8.self).baseAddress else {
+                return 0
+            }
+
+            return connection.writeToStream(buffer: ptr, maxLength: length)
+        }
+
+        if length > 0 {
+            byteIndex += length
+            bytesLeft -= length
+
+            if bytesLeft == 0 {
+                self.dataToSend = nil
+                byteIndex = 0
+            }
+        } else {
+            os_log(.debug, log: broadcastLogger, "writeBufferToStream failure")
+        }
+      
+        return true
+    }
+    
+    func prepare(sample buffer: CMSampleBuffer) -> Data? {
+        guard let imageBuffer = CMSampleBufferGetImageBuffer(buffer) else {
+            os_log(.debug, log: broadcastLogger, "image buffer not available")
+            return nil
+        }
+        
+        CVPixelBufferLockBaseAddress(imageBuffer, .readOnly)
+        
+        let scaleFactor = 1.0
+        let width = CVPixelBufferGetWidth(imageBuffer)/Int(scaleFactor)
+        let height = CVPixelBufferGetHeight(imageBuffer)/Int(scaleFactor)
+        let orientation = CMGetAttachment(buffer, key: RPVideoSampleOrientationKey as CFString, attachmentModeOut: nil)?.uintValue ?? 0
+                                    
+        let scaleTransform = CGAffineTransform(scaleX: CGFloat(1.0/scaleFactor), y: CGFloat(1.0/scaleFactor))
+        let bufferData = self.jpegData(from: imageBuffer, scale: scaleTransform)
+        
+        CVPixelBufferUnlockBaseAddress(imageBuffer, .readOnly)
+        
+        guard let messageData = bufferData else {
+            os_log(.debug, log: broadcastLogger, "corrupted image buffer")
+            return nil
+        }
+              
+        let httpResponse = CFHTTPMessageCreateResponse(nil, 200, nil, kCFHTTPVersion1_1).takeRetainedValue()
+        CFHTTPMessageSetHeaderFieldValue(httpResponse, "Content-Length" as CFString, String(messageData.count) as CFString)
+        CFHTTPMessageSetHeaderFieldValue(httpResponse, "Buffer-Width" as CFString, String(width) as CFString)
+        CFHTTPMessageSetHeaderFieldValue(httpResponse, "Buffer-Height" as CFString, String(height) as CFString)
+        CFHTTPMessageSetHeaderFieldValue(httpResponse, "Buffer-Orientation" as CFString, String(orientation) as CFString)
+        
+        CFHTTPMessageSetBody(httpResponse, messageData as CFData)
+        
+        let serializedMessage = CFHTTPMessageCopySerializedMessage(httpResponse)?.takeRetainedValue() as Data?
+      
+        return serializedMessage
+    }
+    
+    func jpegData(from buffer: CVPixelBuffer, scale scaleTransform: CGAffineTransform) -> Data? {
+        let image = CIImage(cvPixelBuffer: buffer).transformed(by: scaleTransform)
+        
+        guard let colorSpace = image.colorSpace else {
+            return nil
+        }
+      
+        let options: [CIImageRepresentationOption: Float] = [kCGImageDestinationLossyCompressionQuality as CIImageRepresentationOption: 1.0]
+
+        return SampleUploader.imageContext.jpegRepresentation(of: image, colorSpace: colorSpace, options: options)
+    }
+}
@@ -0,0 +1,199 @@
+//
+//  SocketConnection.swift
+//  Broadcast Extension
+//
+//  Created by Alex-Dan Bumbu on 22/03/2021.
+//  Copyright © 2021 Atlassian Inc. All rights reserved.
+//
+
+import Foundation
+import OSLog
+
+class SocketConnection: NSObject {
+    var didOpen: (() -> Void)?
+    var didClose: ((Error?) -> Void)?
+    var streamHasSpaceAvailable: (() -> Void)?
+
+    private let filePath: String
+    private var socketHandle: Int32 = -1
+    private var address: sockaddr_un?
+
+    private var inputStream: InputStream?
+    private var outputStream: OutputStream?
+    
+    private var networkQueue: DispatchQueue?
+    private var shouldKeepRunning = false
+
+    init?(filePath path: String) {
+        filePath = path
+        socketHandle = Darwin.socket(AF_UNIX, SOCK_STREAM, 0)
+
+        guard socketHandle != -1 else {
+            os_log(.debug, log: broadcastLogger, "failure: create socket")
+            return nil
+        }
+    }
+
+    func open() -> Bool {
+        os_log(.debug, log: broadcastLogger, "open socket connection")
+
+        guard FileManager.default.fileExists(atPath: filePath) else {
+            os_log(.debug, log: broadcastLogger, "failure: socket file missing")
+            return false
+        }
+      
+        guard setupAddress() == true else {
+            return false
+        }
+        
+        guard connectSocket() == true else {
+            return false
+        }
+
+        setupStreams()
+        
+        inputStream?.open()
+        outputStream?.open()
+
+        return true
+    }
+
+    func close() {
+        unscheduleStreams()
+
+        inputStream?.delegate = nil
+        outputStream?.delegate = nil
+
+        inputStream?.close()
+        outputStream?.close()
+        
+        inputStream = nil
+        outputStream = nil
+    }
+
+    func writeToStream(buffer: UnsafePointer<UInt8>, maxLength length: Int) -> Int {
+        outputStream?.write(buffer, maxLength: length) ?? 0
+    }
+}
+
+extension SocketConnection: StreamDelegate {
+
+    func stream(_ aStream: Stream, handle eventCode: Stream.Event) {
+        switch eventCode {
+        case .openCompleted:
+            os_log(.debug, log: broadcastLogger, "client stream open completed")
+            if aStream == outputStream {
+                didOpen?()
+            }
+        case .hasBytesAvailable:
+            if aStream == inputStream {
+                var buffer: UInt8 = 0
+                let numberOfBytesRead = inputStream?.read(&buffer, maxLength: 1)
+                if numberOfBytesRead == 0 && aStream.streamStatus == .atEnd {
+                    os_log(.debug, log: broadcastLogger, "server socket closed")
+                    close()
+                    notifyDidClose(error: nil)
+                }
+            }
+        case .hasSpaceAvailable:
+            if aStream == outputStream {
+                streamHasSpaceAvailable?()
+            }
+        case .errorOccurred:
+            os_log(.debug, log: broadcastLogger, "client stream error occured: \(String(describing: aStream.streamError))")
+            close()
+            notifyDidClose(error: aStream.streamError)
+
+        default:
+            break
+        }
+    }
+}
+
+private extension SocketConnection {
+  
+    func setupAddress() -> Bool {
+        var addr = sockaddr_un()
+        guard filePath.count < MemoryLayout.size(ofValue: addr.sun_path) else {
+            os_log(.debug, log: broadcastLogger, "failure: fd path is too long")
+            return false
+        }
+
+        _ = withUnsafeMutablePointer(to: &addr.sun_path.0) { ptr in
+            filePath.withCString {
+                strncpy(ptr, $0, filePath.count)
+            }
+        }
+        
+        address = addr
+        return true
+    }
+
+    func connectSocket() -> Bool {
+        guard var addr = address else {
+            return false
+        }
+        
+        let status = withUnsafePointer(to: &addr) { ptr in
+            ptr.withMemoryRebound(to: sockaddr.self, capacity: 1) {
+                Darwin.connect(socketHandle, $0, socklen_t(MemoryLayout<sockaddr_un>.size))
+            }
+        }
+
+        guard status == noErr else {
+            os_log(.debug, log: broadcastLogger, "failure: \(status)")
+            return false
+        }
+        
+        return true
+    }
+
+    func setupStreams() {
+        var readStream: Unmanaged<CFReadStream>?
+        var writeStream: Unmanaged<CFWriteStream>?
+
+        CFStreamCreatePairWithSocket(kCFAllocatorDefault, socketHandle, &readStream, &writeStream)
+
+        inputStream = readStream?.takeRetainedValue()
+        inputStream?.delegate = self
+        inputStream?.setProperty(kCFBooleanTrue, forKey: Stream.PropertyKey(kCFStreamPropertyShouldCloseNativeSocket as String))
+
+        outputStream = writeStream?.takeRetainedValue()
+        outputStream?.delegate = self
+        outputStream?.setProperty(kCFBooleanTrue, forKey: Stream.PropertyKey(kCFStreamPropertyShouldCloseNativeSocket as String))
+
+        scheduleStreams()
+    }
+  
+    func scheduleStreams() {
+        shouldKeepRunning = true
+        
+        networkQueue = DispatchQueue.global(qos: .userInitiated)
+        networkQueue?.async { [weak self] in
+            self?.inputStream?.schedule(in: .current, forMode: .common)
+            self?.outputStream?.schedule(in: .current, forMode: .common)
+            RunLoop.current.run()
+            
+            var isRunning = false
+                        
+            repeat {
+                isRunning = self?.shouldKeepRunning ?? false && RunLoop.current.run(mode: .default, before: .distantFuture)
+            } while (isRunning)
+        }
+    }
+    
+    func unscheduleStreams() {
+        networkQueue?.sync { [weak self] in
+            self?.inputStream?.remove(from: .current, forMode: .common)
+            self?.outputStream?.remove(from: .current, forMode: .common)
+        }
+        
+        shouldKeepRunning = false
+    }
+    
+    func notifyDidClose(error: Error?) {
+        if didClose != nil {
+            didClose?(error)
+        }
+    }
+}
@@ -2,7 +2,7 @@ PODS:
  - device_info_plus (0.0.1):
    - Flutter
  - Flutter (1.0.0)
-  - flutter_webrtc (0.7.1):
+  - flutter_webrtc (0.8.0):
    - Flutter
    - WebRTC-SDK (= 97.4692.05)
  - livekit_client (1.0.0):
@@ -43,7 +43,7 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
  device_info_plus: e5c5da33f982a436e103237c0c85f9031142abed
  Flutter: 50d75fe2f02b26cc09d224853bb45737f8b3214a
-  flutter_webrtc: c4d09b864e7a8e93ad931bb84eed0ceb1ed51444
+  flutter_webrtc: 1062ea68c08f530ad3d97f743729dd390d8cbf7b
  livekit_client: bfe6ba8be81816356cf2b06483179227c832a986
  path_provider_ios: 14f3d2fd28c4fdb42f44e0f751d12861c43cee02
  shared_preferences_ios: 548a61f8053b9b8a49ac19c1ffbc8b92c50d68ad
@@ -14,8 +14,25 @@
 		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
 		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
 		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+		D7FECD282860997500D04D1C /* ReplayKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D7FECD272860997400D04D1C /* ReplayKit.framework */; };
+		D7FECD2F2860997500D04D1C /* LiveKit Broadcast Extension.appex in Embed App Extensions */ = {isa = PBXBuildFile; fileRef = D7FECD262860997400D04D1C /* LiveKit Broadcast Extension.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
+		D7FECD3B286099EE00D04D1C /* SocketConnection.swift in Sources */ = {isa = PBXBuildFile; fileRef = D7FECD36286099EE00D04D1C /* SocketConnection.swift */; };
+		D7FECD3C286099EE00D04D1C /* SampleHandler.swift in Sources */ = {isa = PBXBuildFile; fileRef = D7FECD37286099EE00D04D1C /* SampleHandler.swift */; };
+		D7FECD3D286099EE00D04D1C /* Atomic.swift in Sources */ = {isa = PBXBuildFile; fileRef = D7FECD38286099EE00D04D1C /* Atomic.swift */; };
+		D7FECD3E286099EE00D04D1C /* DarwinNotificationCenter.swift in Sources */ = {isa = PBXBuildFile; fileRef = D7FECD39286099EE00D04D1C /* DarwinNotificationCenter.swift */; };
+		D7FECD3F286099EE00D04D1C /* SampleUploader.swift in Sources */ = {isa = PBXBuildFile; fileRef = D7FECD3A286099EE00D04D1C /* SampleUploader.swift */; };
 /* End PBXBuildFile section */

+/* Begin PBXContainerItemProxy section */
+		D7FECD2D2860997500D04D1C /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 97C146E61CF9000F007C117D /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = D7FECD252860997400D04D1C;
+			remoteInfo = "LiveKit Broadcast Extension";
+		};
+/* End PBXContainerItemProxy section */
+
 /* Begin PBXCopyFilesBuildPhase section */
 		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
 			isa = PBXCopyFilesBuildPhase;
@@ -27,6 +44,17 @@
 			name = "Embed Frameworks";
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		D7FECD302860997500D04D1C /* Embed App Extensions */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 13;
+			files = (
+				D7FECD2F2860997500D04D1C /* LiveKit Broadcast Extension.appex in Embed App Extensions */,
+			);
+			name = "Embed App Extensions";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXCopyFilesBuildPhase section */

 /* Begin PBXFileReference section */
@@ -45,6 +73,16 @@
 		97C146FD1CF9000F007C117D /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
 		97C147021CF9000F007C117D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		D7FECD262860997400D04D1C /* LiveKit Broadcast Extension.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = "LiveKit Broadcast Extension.appex"; sourceTree = BUILT_PRODUCTS_DIR; };
+		D7FECD272860997400D04D1C /* ReplayKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = ReplayKit.framework; path = System/Library/Frameworks/ReplayKit.framework; sourceTree = SDKROOT; };
+		D7FECD2C2860997500D04D1C /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		D7FECD352860998A00D04D1C /* Runner.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = Runner.entitlements; sourceTree = "<group>"; };
+		D7FECD36286099EE00D04D1C /* SocketConnection.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SocketConnection.swift; sourceTree = "<group>"; };
+		D7FECD37286099EE00D04D1C /* SampleHandler.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SampleHandler.swift; sourceTree = "<group>"; };
+		D7FECD38286099EE00D04D1C /* Atomic.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Atomic.swift; sourceTree = "<group>"; };
+		D7FECD39286099EE00D04D1C /* DarwinNotificationCenter.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DarwinNotificationCenter.swift; sourceTree = "<group>"; };
+		D7FECD3A286099EE00D04D1C /* SampleUploader.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SampleUploader.swift; sourceTree = "<group>"; };
+		D7FECD402860A32000D04D1C /* LiveKit Broadcast Extension.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = "LiveKit Broadcast Extension.entitlements"; sourceTree = "<group>"; };
 		D921B8649EE4CE6E91156304 /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
 		ED81679F29CEB979FBD03BCE /* Pods-Runner.profile.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.profile.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
@@ -58,6 +96,14 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		D7FECD232860997400D04D1C /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				D7FECD282860997500D04D1C /* ReplayKit.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXFrameworksBuildPhase section */

 /* Begin PBXGroup section */
@@ -65,6 +111,7 @@
 			isa = PBXGroup;
 			children = (
 				09B43753FB1E220F505A0AA8 /* Pods_Runner.framework */,
+				D7FECD272860997400D04D1C /* ReplayKit.framework */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";
@@ -85,6 +132,7 @@
 			children = (
 				9740EEB11CF90186004384FC /* Flutter */,
 				97C146F01CF9000F007C117D /* Runner */,
+				D7FECD292860997500D04D1C /* LiveKit Broadcast Extension */,
 				97C146EF1CF9000F007C117D /* Products */,
 				E484AC95536901EEBD680DBE /* Pods */,
 				3D7376885FAAA7D47D78511C /* Frameworks */,
@@ -95,6 +143,7 @@
 			isa = PBXGroup;
 			children = (
 				97C146EE1CF9000F007C117D /* Runner.app */,
+				D7FECD262860997400D04D1C /* LiveKit Broadcast Extension.appex */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -102,6 +151,7 @@
 		97C146F01CF9000F007C117D /* Runner */ = {
 			isa = PBXGroup;
 			children = (
+				D7FECD352860998A00D04D1C /* Runner.entitlements */,
 				97C146FA1CF9000F007C117D /* Main.storyboard */,
 				97C146FD1CF9000F007C117D /* Assets.xcassets */,
 				97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */,
@@ -114,6 +164,20 @@
 			path = Runner;
 			sourceTree = "<group>";
 		};
+		D7FECD292860997500D04D1C /* LiveKit Broadcast Extension */ = {
+			isa = PBXGroup;
+			children = (
+				D7FECD402860A32000D04D1C /* LiveKit Broadcast Extension.entitlements */,
+				D7FECD38286099EE00D04D1C /* Atomic.swift */,
+				D7FECD39286099EE00D04D1C /* DarwinNotificationCenter.swift */,
+				D7FECD37286099EE00D04D1C /* SampleHandler.swift */,
+				D7FECD3A286099EE00D04D1C /* SampleUploader.swift */,
+				D7FECD36286099EE00D04D1C /* SocketConnection.swift */,
+				D7FECD2C2860997500D04D1C /* Info.plist */,
+			);
+			path = "LiveKit Broadcast Extension";
+			sourceTree = "<group>";
+		};
 		E484AC95536901EEBD680DBE /* Pods */ = {
 			isa = PBXGroup;
 			children = (
@@ -139,22 +203,42 @@
 				9705A1C41CF9048500538489 /* Embed Frameworks */,
 				3B06AD1E1E4923F5004D2608 /* Thin Binary */,
 				D9316257C44ACC699FF042FD /* [CP] Embed Pods Frameworks */,
+				D7FECD302860997500D04D1C /* Embed App Extensions */,
 			);
 			buildRules = (
 			);
 			dependencies = (
+				D7FECD2E2860997500D04D1C /* PBXTargetDependency */,
 			);
 			name = Runner;
 			productName = Runner;
 			productReference = 97C146EE1CF9000F007C117D /* Runner.app */;
 			productType = "com.apple.product-type.application";
 		};
+		D7FECD252860997400D04D1C /* LiveKit Broadcast Extension */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = D7FECD342860997500D04D1C /* Build configuration list for PBXNativeTarget "LiveKit Broadcast Extension" */;
+			buildPhases = (
+				D7FECD222860997400D04D1C /* Sources */,
+				D7FECD232860997400D04D1C /* Frameworks */,
+				D7FECD242860997400D04D1C /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = "LiveKit Broadcast Extension";
+			productName = "LiveKit Broadcast Extension";
+			productReference = D7FECD262860997400D04D1C /* LiveKit Broadcast Extension.appex */;
+			productType = "com.apple.product-type.app-extension";
+		};
 /* End PBXNativeTarget section */

 /* Begin PBXProject section */
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
+				LastSwiftUpdateCheck = 1340;
 				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
@@ -162,6 +246,10 @@
 						CreatedOnToolsVersion = 7.3.1;
 						LastSwiftMigration = 1100;
 					};
+					D7FECD252860997400D04D1C = {
+						CreatedOnToolsVersion = 13.4.1;
+						LastSwiftMigration = 1340;
+					};
 				};
 			};
 			buildConfigurationList = 97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */;
@@ -178,6 +266,7 @@
 			projectRoot = "";
 			targets = (
 				97C146ED1CF9000F007C117D /* Runner */,
+				D7FECD252860997400D04D1C /* LiveKit Broadcast Extension */,
 			);
 		};
 /* End PBXProject section */
@@ -194,6 +283,13 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		D7FECD242860997400D04D1C /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXResourcesBuildPhase section */

 /* Begin PBXShellScriptBuildPhase section */
@@ -276,8 +372,28 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		D7FECD222860997400D04D1C /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				D7FECD3C286099EE00D04D1C /* SampleHandler.swift in Sources */,
+				D7FECD3D286099EE00D04D1C /* Atomic.swift in Sources */,
+				D7FECD3E286099EE00D04D1C /* DarwinNotificationCenter.swift in Sources */,
+				D7FECD3F286099EE00D04D1C /* SampleUploader.swift in Sources */,
+				D7FECD3B286099EE00D04D1C /* SocketConnection.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXSourcesBuildPhase section */

+/* Begin PBXTargetDependency section */
+		D7FECD2E2860997500D04D1C /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = D7FECD252860997400D04D1C /* LiveKit Broadcast Extension */;
+			targetProxy = D7FECD2D2860997500D04D1C /* PBXContainerItemProxy */;
+		};
+/* End PBXTargetDependency section */
+
 /* Begin PBXVariantGroup section */
 		97C146FA1CF9000F007C117D /* Main.storyboard */ = {
 			isa = PBXVariantGroup;
@@ -353,19 +469,22 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
 			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = "AppIcon-LiveKit";
 				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				DEVELOPMENT_TEAM = J48VV6BZV9;
+				DEVELOPMENT_TEAM = 76TVFCUKK7;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = io.livekit.example;
+				PRODUCT_BUNDLE_IDENTIFIER = io.livekit.example.flutter;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
@@ -488,19 +607,22 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
 			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = "AppIcon-LiveKit";
 				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				DEVELOPMENT_TEAM = J48VV6BZV9;
+				DEVELOPMENT_TEAM = 76TVFCUKK7;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = io.livekit.example;
+				PRODUCT_BUNDLE_IDENTIFIER = io.livekit.example.flutter;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
@@ -514,19 +636,22 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
 			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = "AppIcon-LiveKit";
 				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				DEVELOPMENT_TEAM = J48VV6BZV9;
+				DEVELOPMENT_TEAM = 76TVFCUKK7;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = io.livekit.example;
+				PRODUCT_BUNDLE_IDENTIFIER = io.livekit.example.flutter;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
@@ -535,6 +660,117 @@
 			};
 			name = Release;
 		};
+		D7FECD312860997500D04D1C /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++17";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CODE_SIGN_ENTITLEMENTS = "LiveKit Broadcast Extension/LiveKit Broadcast Extension.entitlements";
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = 76TVFCUKK7;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = "LiveKit Broadcast Extension/Info.plist";
+				INFOPLIST_KEY_CFBundleDisplayName = "LiveKit Broadcast Extension";
+				INFOPLIST_KEY_NSHumanReadableCopyright = "";
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 1.0;
+				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
+				MTL_FAST_MATH = YES;
+				PRODUCT_BUNDLE_IDENTIFIER = "io.livekit.example.flutter.LiveKit-Broadcast-Extension";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SKIP_INSTALL = YES;
+				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
+		D7FECD322860997500D04D1C /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++17";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CODE_SIGN_ENTITLEMENTS = "LiveKit Broadcast Extension/LiveKit Broadcast Extension.entitlements";
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = 76TVFCUKK7;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = "LiveKit Broadcast Extension/Info.plist";
+				INFOPLIST_KEY_CFBundleDisplayName = "LiveKit Broadcast Extension";
+				INFOPLIST_KEY_NSHumanReadableCopyright = "";
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 1.0;
+				MTL_FAST_MATH = YES;
+				PRODUCT_BUNDLE_IDENTIFIER = "io.livekit.example.flutter.LiveKit-Broadcast-Extension";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SKIP_INSTALL = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Release;
+		};
+		D7FECD332860997500D04D1C /* Profile */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++17";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CODE_SIGN_ENTITLEMENTS = "LiveKit Broadcast Extension/LiveKit Broadcast Extension.entitlements";
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = 76TVFCUKK7;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = "LiveKit Broadcast Extension/Info.plist";
+				INFOPLIST_KEY_CFBundleDisplayName = "LiveKit Broadcast Extension";
+				INFOPLIST_KEY_NSHumanReadableCopyright = "";
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 1.0;
+				MTL_FAST_MATH = YES;
+				PRODUCT_BUNDLE_IDENTIFIER = "io.livekit.example.flutter.LiveKit-Broadcast-Extension";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SKIP_INSTALL = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Profile;
+		};
 /* End XCBuildConfiguration section */

 /* Begin XCConfigurationList section */
@@ -558,6 +794,16 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		D7FECD342860997500D04D1C /* Build configuration list for PBXNativeTarget "LiveKit Broadcast Extension" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				D7FECD312860997500D04D1C /* Debug */,
+				D7FECD322860997500D04D1C /* Release */,
+				D7FECD332860997500D04D1C /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 /* End XCConfigurationList section */
 	};
 	rootObject = 97C146E61CF9000F007C117D /* Project object */;
@@ -2,6 +2,12 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>RTCScreenSharingExtension</key>
+	<string>io.livekit.example.flutter.LiveKit-Broadcast-Extension</string>
+	<key>RTCAppGroupIdentifier</key>
+	<string>group.io.livekit.example.flutter</string>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 	<key>CFBundleExecutable</key>
@@ -49,7 +55,5 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
-	<key>CADisableMinimumFrameDurationOnPhone</key>
-	<true/>
 </dict>
 </plist>
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.io.livekit.example.flutter</string>
+	</array>
+</dict>
+</plist>
@@ -90,12 +90,13 @@ class _ConnectPageState extends State<ConnectPage> {
        _uriCtrl.text,
        _tokenCtrl.text,
        roomOptions: RoomOptions(
-          adaptiveStream: _adaptiveStream,
-          dynacast: _dynacast,
-          defaultVideoPublishOptions: VideoPublishOptions(
-            simulcast: _simulcast,
-          ),
-        ),
+            adaptiveStream: _adaptiveStream,
+            dynacast: _dynacast,
+            defaultVideoPublishOptions: VideoPublishOptions(
+              simulcast: _simulcast,
+            ),
+            defaultScreenShareCaptureOptions: const ScreenShareCaptureOptions(
+                useiOSBroadcastExtension: true)),
      );

      await Navigator.push<void>(
@@ -176,7 +176,7 @@ packages:
      name: flutter_webrtc
      url: "https://pub.dartlang.org"
    source: hosted
-    version: "0.8.9"
+    version: "0.8.10"
  google_fonts:
    dependency: "direct main"
    description:
@@ -225,7 +225,7 @@ packages:
      path: ".."
      relative: true
    source: path
-    version: "1.0.0"
+    version: "1.0.1"
  logging:
    dependency: "direct main"
    description:
@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:flutter/foundation.dart' show kIsWeb;

 import '../track/local/audio.dart';
@@ -74,12 +76,26 @@ class CameraCaptureOptions extends VideoCaptureOptions {

 /// Options used when creating a [LocalVideoTrack] that captures the screen.
 class ScreenShareCaptureOptions extends VideoCaptureOptions {
+  final bool useiOSBroadcastExtension;
+
  const ScreenShareCaptureOptions({
+    this.useiOSBroadcastExtension = false,
    VideoParameters params = VideoParametersPresets.screenShareH720FPS15,
  }) : super(params: params);

-  ScreenShareCaptureOptions.from({required VideoCaptureOptions captureOptions})
+  ScreenShareCaptureOptions.from(
+      {this.useiOSBroadcastExtension = false,
+      required VideoCaptureOptions captureOptions})
      : super(params: captureOptions.params);
+
+  @override
+  Map<String, dynamic> toMediaConstraintsMap() {
+    var constraints = super.toMediaConstraintsMap();
+    if (useiOSBroadcastExtension && Platform.isIOS) {
+      constraints['deviceId'] = 'broadcast';
+    }
+    return constraints;
+  }
 }

 /// Base class for track options.
@@ -218,7 +218,7 @@ packages:
      name: flutter_webrtc
      url: "https://pub.dartlang.org"
    source: hosted
-    version: "0.8.9"
+    version: "0.8.10"
  glob:
    dependency: transitive
    description:
@@ -22,7 +22,7 @@ dependencies:
  uuid: ^3.0.6
  synchronized: ^3.0.0+2
  protobuf: ^2.0.1
-  flutter_webrtc: ^0.8.9
+  flutter_webrtc: ^0.8.10
  dart_webrtc: ^1.0.6
  device_info_plus: ^3.2.3