ios: allow sound in silent mode (#3346)

Co-authored-by: Avently <avently@local>

apps/ios/Shared/Model/AudioRecPlay.swift

@@ -61,6 +61,7 @@ class AudioRecorder {
             await MainActor.run {
                 AppDelegate.keepScreenOn(false)
             }
+            try? av.setCategory(AVAudioSession.Category.soloAmbient)
             logger.error("AudioRecorder startAudioRecording error \(error.localizedDescription)")
             return .error(error.localizedDescription)
         }
@@ -76,6 +77,7 @@ class AudioRecorder {
         }
         recordingTimer = nil
         AppDelegate.keepScreenOn(false)
+        try? AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.soloAmbient)
     }
 
     private func checkPermission() async -> Bool {
@@ -129,6 +131,9 @@ class AudioPlayer: NSObject, AVAudioPlayerDelegate {
                 AppDelegate.keepScreenOn(true)
                 guard let time = self.audioPlayer?.currentTime else { return }
                 self.onTimer?(time)
+                AudioPlayer.changeAudioSession(true)
+            } else {
+                AudioPlayer.changeAudioSession(false)
             }
         }
     }
@@ -157,6 +162,7 @@ class AudioPlayer: NSObject, AVAudioPlayerDelegate {
         if let player = audioPlayer {
             player.stop()
             AppDelegate.keepScreenOn(false)
+            AudioPlayer.changeAudioSession(false)
         }
         audioPlayer = nil
         if let timer = playbackTimer {
@@ -165,6 +171,24 @@ class AudioPlayer: NSObject, AVAudioPlayerDelegate {
         playbackTimer = nil
     }
 
+    static func changeAudioSession(_ playback: Bool) {
+        // When there is a audio recording, setting any other category will disable sound
+        if AVAudioSession.sharedInstance().category == .playAndRecord {
+            return
+        }
+        if playback {
+            if AVAudioSession.sharedInstance().category != .playback {
+                logger.log("AudioSession: playback")
+                try? AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback, options: .duckOthers)
+            }
+        } else {
+            if AVAudioSession.sharedInstance().category != .soloAmbient {
+                logger.log("AudioSession: soloAmbient")
+                try? AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.soloAmbient)
+            }
+        }
+    }
+
     func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
         stop()
         self.onFinishPlayback?()

apps/ios/Shared/Views/Chat/ChatItem/CIVideoView.swift

@@ -9,6 +9,7 @@
 import SwiftUI
 import AVKit
 import SimpleXChat
+import Combine
 
 struct CIVideoView: View {
     @EnvironmentObject var m: ChatModel
@@ -28,6 +29,7 @@ struct CIVideoView: View {
     @State private var showFullScreenPlayer = false
     @State private var timeObserver: Any? = nil
     @State private var fullScreenTimeObserver: Any? = nil
+    @State private var publisher: AnyCancellable? = nil
 
     init(chatItem: ChatItem, image: String, duration: Int, maxWidth: CGFloat, videoWidth: Binding<CGFloat?>, scrollProxy: ScrollViewProxy?) {
         self.chatItem = chatItem
@@ -294,6 +296,14 @@ struct CIVideoView: View {
                     m.stopPreviousRecPlay = url
                     if let player = fullPlayer {
                         player.play()
+                        var played = false
+                        publisher = player.publisher(for: \.timeControlStatus).sink { status in
+                            if played || status == .playing {
+                                AppDelegate.keepScreenOn(status == .playing)
+                                AudioPlayer.changeAudioSession(status == .playing)
+                            }
+                            played = status == .playing
+                        }
                         fullScreenTimeObserver = NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: player.currentItem, queue: .main) { _ in
                             player.seek(to: CMTime.zero)
                             player.play()
@@ -308,6 +318,7 @@ struct CIVideoView: View {
                 fullScreenTimeObserver = nil
                 fullPlayer?.pause()
                 fullPlayer?.seek(to: CMTime.zero)
+                publisher?.cancel()
             }
         }
     }

apps/ios/Shared/Views/Helpers/VideoPlayerView.swift

@@ -38,8 +38,13 @@ struct VideoPlayerView: UIViewRepresentable {
             player.seek(to: CMTime.zero)
             player.play()
         }
+        var played = false
         context.coordinator.publisher = player.publisher(for: \.timeControlStatus).sink { status in
+            if played || status == .playing {
                 AppDelegate.keepScreenOn(status == .playing)
+                AudioPlayer.changeAudioSession(status == .playing)
+            }
+            played = status == .playing
         }
         return controller.view
     }