fixed audio not playing on silent mode - added apple configuration (#548)

Author: d3xvn

packages/stream_video/lib/src/call/session/call_session.dart

@@ -136,6 +136,9 @@ class CallSession extends Disposable {
         ..onRemoteTrackReceived = _onRemoteTrackReceived
         ..onStatsReceived = _onStatsReceived;
 
+      if (CurrentPlatform.isIos) {
+        await rtcManager?.setAppleAudioConfiguration();
+      }
       _logger.v(() => '[start] completed');
       return const Result.success(none);
     } catch (e, stk) {

packages/stream_video/lib/src/webrtc/rtc_manager.dart

@@ -816,6 +816,26 @@ extension RtcManagerTrackHelper on RtcManager {
     _logger.e(() => 'Unsupported trackType $trackType');
     return Result.error('Unsupported trackType $trackType');
   }
+
+  Future<Result<None>> setAppleAudioConfiguration() async {
+    try {
+      await rtc.Helper.setAppleAudioConfiguration(
+        rtc.AppleAudioConfiguration(
+          appleAudioMode: rtc.AppleAudioMode.videoChat,
+          appleAudioCategory: rtc.AppleAudioCategory.playAndRecord,
+          appleAudioCategoryOptions: {
+            rtc.AppleAudioCategoryOption.mixWithOthers,
+            rtc.AppleAudioCategoryOption.allowBluetooth,
+            rtc.AppleAudioCategoryOption.allowBluetoothA2DP,
+            rtc.AppleAudioCategoryOption.allowAirPlay,
+          },
+        ),
+      );
+      return const Result.success(none);
+    } catch (e, stk) {
+      return Result.failure(VideoErrors.compose(e, stk));
+    }
+  }
 }
 
 extension on RtcLocalTrack<VideoConstraints> {