1.39.0 Release

CHANGELOG.md

@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### 🔄 Changed
 
+# [1.39.0](https://github.com/GetStream/stream-video-swift/releases/tag/1.39.0)
+_December 24, 2025_
+
+### ✅ Added
+- Support for capture inApp audio during ScreenSharing sessions. [#1020](https://github.com/GetStream/stream-video-swift/pull/1020)
+
 # [1.38.2](https://github.com/GetStream/stream-video-swift/releases/tag/1.38.2)
 _December 22, 2025_
 

DemoApp/Sources/Components/AudioTrackPlayer/AudioTrackPlayer.swift

@@ -0,0 +1,83 @@
+//
+// Copyright © 2025 Stream.io Inc. All rights reserved.
+//
+
+import AVFoundation
+import Foundation
+import StreamVideo
+
+final class AudioTrackPlayer: NSObject, AVAudioPlayerDelegate {
+    enum Track: String, Equatable, CaseIterable {
+        case track1 = "track_1"
+        case track2 = "track_2"
+
+        var fileExtension: String {
+            switch self {
+            case .track1:
+                return ".mp3"
+            case .track2:
+                return ".mp3"
+            }
+        }
+    }
+
+    @Published private(set) var isPlaying: Bool = false
+    @Published private(set) var track: Track?
+
+    private var audioPlayer: AVAudioPlayer?
+    private let processingQueue = OperationQueue(maxConcurrentOperationCount: 1)
+
+    func play(_ track: Track) {
+        processingQueue.addTaskOperation { @MainActor [weak self] in
+            guard
+                let self,
+                self.track != track,
+                let url = Bundle.main.url(forResource: track.rawValue, withExtension: track.fileExtension),
+                let audioPlayer = try? AVAudioPlayer(contentsOf: url)
+            else {
+                return
+            }
+
+            self.audioPlayer = audioPlayer
+            audioPlayer.play()
+            audioPlayer.numberOfLoops = 1000
+            self.track = track
+            self.isPlaying = true
+        }
+    }
+
+    func stop() {
+        processingQueue.addTaskOperation { @MainActor [weak self] in
+            guard
+                let self
+            else {
+                return
+            }
+
+            audioPlayer?.stop()
+            audioPlayer = nil
+            isPlaying = false
+            track = nil
+        }
+    }
+
+    // MARK: - AVAudioPlayerDelegate
+
+    func audioPlayerDidFinishPlaying(
+        _ player: AVAudioPlayer,
+        successfully flag: Bool
+    ) {
+        stop()
+    }
+}
+
+extension AudioTrackPlayer: InjectionKey {
+    static var currentValue: AudioTrackPlayer = .init()
+}
+
+extension InjectedValues {
+    var audioPlayer: AudioTrackPlayer {
+        get { Self[AudioTrackPlayer.self] }
+        set { _ = newValue }
+    }
+}

DemoApp/Sources/Controls/DemoMoreControls/DemoBroadcastMoreControlsListButtonView.swift

@@ -40,15 +40,29 @@ struct DemoBroadcastMoreControlsListButtonView: View {
 
     @ViewBuilder
     private var inAppScreenshareButtonView: some View {
-        DemoMoreControlListButtonView(
-            action: {
-                viewModel.startScreensharing(type: .inApp)
+        Menu {
+            Button {
+                viewModel.startScreensharing(type: .inApp, includeAudio: false)
                 selection = .inApp
-            },
-            label: "Screenshare"
-        ) {
-            Image(systemName: "record.circle")
-                .foregroundColor(appearance.colors.text)
+            } label: {
+                Text("Without audio")
+            }
+
+            Button {
+                viewModel.startScreensharing(type: .inApp, includeAudio: true)
+                selection = .inApp
+            } label: {
+                Text("With audio")
+            }
+
+        } label: {
+            DemoMoreControlListButtonView(
+                action: {},
+                label: "Screenshare"
+            ) {
+                Image(systemName: "record.circle")
+                    .foregroundColor(appearance.colors.text)
+            }
         }
     }
 

DemoApp/Sources/ViewModifiers/MoreControls/DemoAudioTrackButtonView.swift

@@ -0,0 +1,61 @@
+//
+// Copyright © 2025 Stream.io Inc. All rights reserved.
+//
+
+import Foundation
+import StreamVideo
+import SwiftUI
+
+struct DemoAudioTrackButtonView: View {
+    @Injected(\.audioPlayer) var audioPlayer: AudioTrackPlayer
+
+    @State private var isPlaying: Bool = AudioTrackPlayer.currentValue.isPlaying
+    @State private var track: AudioTrackPlayer.Track? = AudioTrackPlayer.currentValue.track
+
+    var body: some View {
+        Menu {
+            Button {
+                audioPlayer.stop()
+            } label: {
+                Label {
+                    Text("None")
+                } icon: {
+                    if track == nil {
+                        Image(systemName: "checkmark")
+                    }
+                }
+            }
+
+            Divider()
+
+            ForEach(AudioTrackPlayer.Track.allCases, id: \.self) { track in
+                Button {
+                    if self.track == track {
+                        audioPlayer.stop()
+                    } else {
+                        audioPlayer.play(track)
+                    }
+                } label: {
+                    Label {
+                        Text(track.rawValue)
+                    } icon: {
+                        if self.track == track {
+                            Image(systemName: "checkmark")
+                        }
+                    }
+                }
+            }
+        } label: {
+            DemoMoreControlListButtonView(
+                action: {},
+                label: "In-App audio"
+            ) {
+                Image(
+                    systemName: isPlaying ? "pause.circle" : "play.circle"
+                )
+            }
+        }
+        .onReceive(audioPlayer.$isPlaying.receive(on: DispatchQueue.main)) { isPlaying = $0 }
+        .onReceive(audioPlayer.$track.receive(on: DispatchQueue.main)) { track = $0 }
+    }
+}

DemoApp/Sources/ViewModifiers/MoreControls/DemoMoreControlsViewModifier.swift

@@ -77,6 +77,8 @@ struct DemoMoreControlsViewModifier: ViewModifier {
                             VStack {
                                 Divider()
 
+                                DemoAudioTrackButtonView()
+
                                 DemoMoreLogsAndGleapButtonView()
 
                                 DemoBroadcastMoreControlsListButtonView(

DocumentationTests/DocumentationTests/DocumentationTests/06-advanced/04-screensharing.swift

@@ -17,6 +17,14 @@ private func content() {
         }
     }
 
+    asyncContainer {
+        Task {
+            let call = streamVideo.call(callType: "default", callId: "123")
+            try await call.join()
+            try await call.startScreensharing(type: .inApp, includeAudio: true)
+        }
+    }
+
     asyncContainer {
         Task {
             try await call.stopScreensharing()

README.md

@@ -9,7 +9,7 @@
   <a href="https://swift.org"><img src="https://img.shields.io/badge/Swift-5.9%2B-orange.svg" /></a>
 </p>
 <p align="center">
-  <img id="stream-video-label" alt="StreamVideo" src="https://img.shields.io/badge/StreamVideo-9.0%20MB-blue"/>
+  <img id="stream-video-label" alt="StreamVideo" src="https://img.shields.io/badge/StreamVideo-9.07%20MB-blue"/>
   <img id="stream-video-swiftui-label" alt="StreamVideoSwiftUI" src="https://img.shields.io/badge/StreamVideoSwiftUI-2.38%20MB-blue"/>
   <img id="stream-video-uikit-label" alt="StreamVideoUIKit" src="https://img.shields.io/badge/StreamVideoUIKit-2.5%20MB-blue"/>
   <img id="stream-web-rtc-label" alt="StreamWebRTC" src="https://img.shields.io/badge/StreamWebRTC-11.02%20MB-blue"/>

Sources/StreamVideo/Call.swift

@@ -546,9 +546,18 @@ public class Call: @unchecked Sendable, WSEventsSubscriber {
     }
 
     /// Starts screensharing from the device.
-    /// - Parameter type: The screensharing type (in-app or broadcasting).
-    public func startScreensharing(type: ScreensharingType) async throws {
-        try await callController.startScreensharing(type: type)
+    /// - Parameters:
+    ///   - type: The screensharing type (in-app or broadcasting).
+    ///   - includeAudio: Whether to capture app audio during screensharing.
+    ///     Only valid for `.inApp`; ignored otherwise.
+    public func startScreensharing(
+        type: ScreensharingType,
+        includeAudio: Bool = true
+    ) async throws {
+        try await callController.startScreensharing(
+            type: type,
+            includeAudio: includeAudio
+        )
     }
 
     /// Stops screensharing from the current device.

Sources/StreamVideo/Controllers/CallController.swift

@@ -211,8 +211,19 @@ class CallController: @unchecked Sendable {
         }
     }
 
-    func startScreensharing(type: ScreensharingType) async throws {
-        try await webRTCCoordinator.startScreensharing(type: type)
+    /// Starts screensharing for the current call.
+    /// - Parameters:
+    ///   - type: The screensharing type (in-app or broadcasting).
+    ///   - includeAudio: Whether to capture app audio during screensharing.
+    ///     Only valid for `.inApp`; ignored otherwise.
+    func startScreensharing(
+        type: ScreensharingType,
+        includeAudio: Bool
+    ) async throws {
+        try await webRTCCoordinator.startScreensharing(
+            type: type,
+            includeAudio: includeAudio
+        )
     }
 
     func stopScreensharing() async throws {

Sources/StreamVideo/Generated/SystemEnvironment+Version.swift

@@ -7,7 +7,7 @@ import Foundation
 
 extension SystemEnvironment {
   /// A Stream Video version.
-  public static let version: String = "1.38.2"
+  public static let version: String = "1.39.0"
   /// The WebRTC version.
   public static let webRTCVersion: String = "137.0.54"
 }

Sources/StreamVideo/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.38.2</string>
+	<string>1.39.0</string>
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 	<key>NSHumanReadableCopyright</key>

Sources/StreamVideo/Utils/AudioSession/AudioDeviceModule/AudioDeviceModule.swift

@@ -96,6 +96,14 @@ final class AudioDeviceModule: NSObject, RTCAudioDeviceModuleDelegate, Encodable
         }
     }
 
+    private struct AudioBufferInjectionPreState {
+        var isAdvancedDuckingEnabled: Bool
+        var duckingLevel: Int
+        var isVoiceProcessingBypassed: Bool
+        var isVoiceProcessingEnabled: Bool
+        var isVoiceProcessingAGCEnabled: Bool
+    }
+
     /// Tracks whether WebRTC is currently playing back audio.
     private let isPlayingSubject: CurrentValueSubject<Bool, Never>
     /// `true` while audio playout is active.
@@ -168,6 +176,13 @@ final class AudioDeviceModule: NSObject, RTCAudioDeviceModuleDelegate, Encodable
 
     /// Strong reference to the current engine so we can introspect it if needed.
     private var engine: AVAudioEngine?
+    @Atomic private var engineInputContext: AVAudioEngine.InputContext? {
+        didSet { audioBufferRenderer.configure(with: engineInputContext) }
+    }
+
+    private let audioBufferRenderer: AudioBufferRenderer = .init()
+
+    private var preAudioBufferInjectionSnapshot: AudioBufferInjectionPreState?
 
     /// Textual diagnostics for logging and debugging.
     override var description: String {
@@ -317,6 +332,13 @@ final class AudioDeviceModule: NSObject, RTCAudioDeviceModuleDelegate, Encodable
         source.refreshStereoPlayoutState()
     }
 
+    // MARK: - Audio Buffer injection
+
+    /// Enqueues a screen share audio sample buffer for playback.
+    func enqueue(_ sampleBuffer: CMSampleBuffer) {
+        audioBufferRenderer.enqueue(sampleBuffer)
+    }
+
     // MARK: - RTCAudioDeviceModuleDelegate
 
     /// Receives speech activity notifications emitted by WebRTC VAD.
@@ -403,6 +425,7 @@ final class AudioDeviceModule: NSObject, RTCAudioDeviceModuleDelegate, Encodable
         )
         isPlayingSubject.send(isPlayoutEnabled)
         isRecordingSubject.send(isRecordingEnabled)
+        audioBufferRenderer.reset()
         return Constant.successResult
     }
 
@@ -423,6 +446,8 @@ final class AudioDeviceModule: NSObject, RTCAudioDeviceModuleDelegate, Encodable
         )
         isPlayingSubject.send(isPlayoutEnabled)
         isRecordingSubject.send(isRecordingEnabled)
+        audioBufferRenderer.reset()
+        engineInputContext = nil
         return Constant.successResult
     }
 
@@ -434,6 +459,8 @@ final class AudioDeviceModule: NSObject, RTCAudioDeviceModuleDelegate, Encodable
         self.engine = nil
         subject.send(.willReleaseAudioEngine(engine))
         audioLevelsAdapter.uninstall(on: 0)
+        audioBufferRenderer.reset()
+        engineInputContext = nil
         return Constant.successResult
     }
 
@@ -447,6 +474,13 @@ final class AudioDeviceModule: NSObject, RTCAudioDeviceModuleDelegate, Encodable
         format: AVAudioFormat,
         context: [AnyHashable: Any]
     ) -> Int {
+        engineInputContext = .init(
+            engine: engine,
+            source: source,
+            destination: destination,
+            format: format
+        )
+
         subject.send(
             .configureInputFromSource(
                 engine,
@@ -455,12 +489,14 @@ final class AudioDeviceModule: NSObject, RTCAudioDeviceModuleDelegate, Encodable
                 format: format
             )
         )
+
         audioLevelsAdapter.installInputTap(
             on: destination,
             format: format,
             bus: 0,
             bufferSize: 1024
         )
+
         return Constant.successResult
     }