refactor audio engine init to Connection.m

VoidLink/Input/MicHandler.swift

@@ -185,11 +185,14 @@ public class MicHandler: NSObject {
 
     private func configureSession() throws {
         let session = AVAudioSession.sharedInstance()
+        /*
         let bluetoothAudioOption = self.useBuiltinMic ? AVAudioSession.CategoryOptions.allowBluetoothA2DP : AVAudioSession.CategoryOptions.allowBluetooth
         try session.setCategory(.playAndRecord, mode: .default, options: [.mixWithOthers, .defaultToSpeaker, bluetoothAudioOption])
+        
         if #available(iOS 13.0, *) {
             try session.setAllowHapticsAndSystemSoundsDuringRecording(true)
-        }
+        } */
+        // AVAudioSession Initiailized in Connection.m -> ArInit
         
         // 列出所有可用输入
         if self.useBuiltinMic, let inputs = session.availableInputs {
@@ -201,7 +204,7 @@ public class MicHandler: NSObject {
                 }
             }
         }
-        try session.setActive(true)
+        // try session.setActive(true)
     }
     
     private func sendOpusFrameFromDequeBuffer() {

VoidLink/Stream/Connection.m

@@ -284,9 +284,8 @@ int ArInit(int audioConfiguration, POPUS_MULTISTREAM_CONFIGURATION opusConfig, v
     // Start playback
     SDL_PauseAudioDevice(audioDevice, 0);
     
-    // Disable lowering volume of other audio streams (SDL sets AVAudioSessionCategoryOptionDuckOthers by default)
-    // AVAudioSessionCategoryOptionAllowBluetoothA2DP
-    // AVAudioSessionCategoryOptionAllowBluetooth
+    
+    // System audio engine initialization
     DataManager* dataMan = [[DataManager alloc] init];
     TemporarySettings* tempSettings = [dataMan getSettings];
     bool useBluetoothD2P = tempSettings.useBuiltinMic || !tempSettings.redirectMic;
@@ -296,6 +295,7 @@ int ArInit(int audioConfiguration, POPUS_MULTISTREAM_CONFIGURATION opusConfig, v
                     mode:AVAudioSessionModeDefault
                  options:AVAudioSessionCategoryOptionMixWithOthers|AVAudioSessionCategoryOptionDefaultToSpeaker|bluetoothAudioOption
                    error:nil];
+    if(tempSettings.redirectMic) if(@available(iOS 13.0, *)) [session setAllowHapticsAndSystemSoundsDuringRecording:YES error:nil];
     [session setActive:YES error:nil];
     
     AudioEngineInit(audioConfig.sampleRate, audioConfig.channelCount);