Expose method to allow pausing/unpausing audio for android platform (needed e.g. when app is minimized)

Author: sierpinskid

Packages/StreamVideo/Runtime/Core/IStreamVideoClient.cs

@@ -106,5 +106,18 @@ Task<IStreamCall> JoinCallAsync(StreamCallType callType, string callId, bool cre
         void SetAudioProcessingModule(bool enabled, bool echoCancellationEnabled, bool autoGainEnabled, bool noiseSuppressionEnabled, int noiseSuppressionLevel);
 
         void GetAudioProcessingModuleConfig(out bool enabled, out bool echoCancellationEnabled, out bool autoGainEnabled, out bool noiseSuppressionEnabled, out int noiseSuppressionLevel);
+
+
+        /// <summary>
+        /// Temporary method (can be removed in the future) to pause audio playback on Android.
+        /// This will completely suspend playback of any audio coming from the StreamVideo SDK on the Android platform.
+        /// </summary>
+        void PauseAndroidAudioPlayback();
+
+        /// <summary>
+        /// Temporary method (can be removed in the future) to resume audio playback on Android.
+        /// Call this resume audio playback if it was previously paused using <see cref="PauseAndroidAudioPlayback"/>.
+        /// </summary>
+        void ResumeAndroidAudioPlayback();
     }
 }

Packages/StreamVideo/Runtime/Core/LowLevelClient/RtcSession.cs

@@ -369,7 +369,7 @@ public async Task StartAsync(StreamCall call)
 
                 //StreamTodo: validate when this state should set
                 CallState = CallingState.Joined;
-                
+
 #if STREAM_DEBUG_ENABLED
                 _videoAudioSyncBenchmark?.Init(call);
 #endif
@@ -434,7 +434,7 @@ public async Task StopAsync(string reason = "")
             {
                 await _sfuWebSocket.DisconnectAsync(WebSocketCloseStatus.NormalClosure, reason);
             }
-            
+
             CallState = CallingState.Offline;
 
 #if STREAM_DEBUG_ENABLED
@@ -491,6 +491,30 @@ public void TryRestartAudioPlayback()
 #endif
         }
 
+        //StreamTODO: temp solution to allow stopping the audio when app is minimized. User tried disabling the AudioSource but the audio is handled natively so it has no effect
+        public void PauseAndroidAudioPlayback()
+        {
+#if STREAM_NATIVE_AUDIO
+            WebRTC.StopAudioPlayback();
+            _logs.Warning("Audio Playback is paused. This stops all audio coming from StreamVideo SDK on Android platform.");
+#else
+            throw new NotSupportedException(
+                $"{nameof(PauseAndroidAudioPlayback)} is only supported on Android platform.");
+#endif
+        }
+
+        //StreamTODO: temp solution to allow stopping the audio when app is minimized. User tried disabling the AudioSource but the audio is handled natively so it has no effect
+        public void ResumeAndroidAudioPlayback()
+        {
+#if STREAM_NATIVE_AUDIO
+            WebRTC.StartAudioPlayback(AudioOutputSampleRate, AudioOutputChannels);
+            _logs.Warning("Audio Playback is resumed. This resumes audio coming from StreamVideo SDK on Android platform.");
+#else
+            throw new NotSupportedException(
+                $"{nameof(ResumeAndroidAudioPlayback)} is only supported on Android platform.");
+#endif
+        }
+
         /// <summary>
         /// Set Publisher Video track enabled/disabled, if track is available, or store the preference for when track becomes available
         /// </summary>

Packages/StreamVideo/Runtime/Core/StreamVideoClient.cs

@@ -311,6 +311,10 @@ public void SetAudioProcessingModule(bool enabled, bool echoCancellationEnabled,
 #endif
         }
 
+        public void PauseAndroidAudioPlayback() => InternalLowLevelClient.RtcSession.PauseAndroidAudioPlayback();
+
+        public void ResumeAndroidAudioPlayback() => InternalLowLevelClient.RtcSession.ResumeAndroidAudioPlayback();
+
         #region IStreamVideoClientEventsListener
 
         event Action IStreamVideoClientEventsListener.Destroyed