Use the linphone functions for audio route management rather than IOS specific ones. Also removed redundant triggers on Speaker and Bluetooth buttons.

Classes/CallManager.swift

@@ -126,13 +126,13 @@ import AVFoundation
 		#endif
 		return false
 	}
-
+	/*
 	@objc func allowSpeaker() -> Bool {
 		if (UIDevice.current.userInterfaceIdiom == .pad) {
 			// For now, ipad support only speaker.
 			return true
 		}
-
+		return true
 		var allow = true
 		let newRoute = AVAudioSession.sharedInstance().currentRoute
 		if (newRoute.outputs.count > 0) {
@@ -142,7 +142,39 @@ import AVFoundation
 
 		return allow
 	}
-
+	*/
+	
+	@objc func changeRouteToSpeaker() {
+		speakerEnabled = true
+		for device in lc!.audioDevices {
+			if (device.type == AudioDeviceType.Speaker) {
+				lc!.outputAudioDevice = device
+				break
+			}
+		}
+		UIDevice.current.isProximityMonitoringEnabled = false
+		bluetoothEnabled = false
+	}
+	
+	@objc func changeRouteToBluetooth() {
+		bluetoothEnabled = true
+		for device in lc!.audioDevices {
+			if (device.type == AudioDeviceType.Bluetooth || device.type == AudioDeviceType.BluetoothA2DP) {
+				lc!.outputAudioDevice = device
+				break
+			}
+		}
+		speakerEnabled = false
+		UIDevice.current.isProximityMonitoringEnabled = (lc!.callsNb > 0)
+	}
+	
+	@objc func changeRouteToDefault() {
+		bluetoothEnabled = false
+		speakerEnabled = false
+		lc!.outputAudioDevice = lc!.defaultOutputAudioDevice
+	}
+	/*
+	
 	@objc func enableSpeaker(enable: Bool) {
 		speakerEnabled = enable
 		do {
@@ -160,7 +192,7 @@ import AVFoundation
 			Log.directLog(BCTBX_LOG_ERROR, text: "Failed to change audio route: err \(error)")
 		}
 	}
-
+*/
 	func requestTransaction(_ transaction: CXTransaction, action: String) {
 		callController.request(transaction) { error in
 			if let error = error {
@@ -510,7 +542,7 @@ import AVFoundation
 
 					if (CallManager.instance().speakerBeforePause) {
 						CallManager.instance().speakerBeforePause = false
-						CallManager.instance().enableSpeaker(enable: true)
+						CallManager.instance().changeRouteToSpeaker()
 						CallManager.speaker_already_enabled = true
 					}
 					break
@@ -539,7 +571,7 @@ import AVFoundation
 					UIDevice.current.isProximityMonitoringEnabled = false
 					CallManager.speaker_already_enabled = false
 					if (CallManager.instance().lc!.callsNb == 0) {
-						CallManager.instance().enableSpeaker(enable: false)
+						CallManager.instance().changeRouteToDefault()
 						// disable this because I don't find anygood reason for it: _bluetoothAvailable = FALSE;
 						// furthermore it introduces a bug when calling multiple times since route may not be
 						// reconfigured between cause leading to bluetooth being disabled while it should not
@@ -605,7 +637,7 @@ import AVFoundation
 
 			if (cstate == .IncomingReceived || cstate == .OutgoingInit || cstate == .Connected || cstate == .StreamsRunning) {
 				if ((call.currentParams?.videoEnabled ?? false) && !CallManager.speaker_already_enabled && !CallManager.instance().bluetoothEnabled) {
-					CallManager.instance().enableSpeaker(enable: true)
+					CallManager.instance().changeRouteToSpeaker()
 					CallManager.speaker_already_enabled = true
 				}
 			}

Classes/CallOutgoingView.m

@@ -127,20 +127,17 @@ static UICompositeViewDescription *compositeDescription = nil;
 
 - (IBAction)onRoutesBluetoothClick:(id)sender {
 	[self hideRoutes:TRUE animated:TRUE];
-	[CallManager.instance enableSpeakerWithEnable:FALSE];
-	[LinphoneManager.instance setBluetoothEnabled:TRUE];
+	[CallManager.instance changeRouteToBluetooth];
 }
 
 - (IBAction)onRoutesEarpieceClick:(id)sender {
 	[self hideRoutes:TRUE animated:TRUE];
-	[CallManager.instance enableSpeakerWithEnable:FALSE];
-	[LinphoneManager.instance setBluetoothEnabled:FALSE];
+	[CallManager.instance changeRouteToDefault];
 }
 
 - (IBAction)onRoutesSpeakerClick:(id)sender {
 	[self hideRoutes:TRUE animated:TRUE];
-	[LinphoneManager.instance setBluetoothEnabled:FALSE];
-	[CallManager.instance enableSpeakerWithEnable:TRUE];
+	[CallManager.instance changeRouteToSpeaker];
 }
 
 - (IBAction)onRoutesClick:(id)sender {

Classes/CallView.m

@@ -803,20 +803,17 @@ static void hideSpinner(LinphoneCall *call, void *user_data) {
 
 - (IBAction)onRoutesBluetoothClick:(id)sender {
 	[self hideRoutes:TRUE animated:TRUE];
-	[CallManager.instance enableSpeakerWithEnable:FALSE];
-	[LinphoneManager.instance setBluetoothEnabled:TRUE];
+	[CallManager.instance changeRouteToBluetooth];
 }
 
 - (IBAction)onRoutesEarpieceClick:(id)sender {
 	[self hideRoutes:TRUE animated:TRUE];
-	[CallManager.instance enableSpeakerWithEnable:FALSE];
-	[LinphoneManager.instance setBluetoothEnabled:FALSE];
+	[CallManager.instance changeRouteToDefault];
 }
 
 - (IBAction)onRoutesSpeakerClick:(id)sender {
 	[self hideRoutes:TRUE animated:TRUE];
-	[LinphoneManager.instance setBluetoothEnabled:FALSE];
-	[CallManager.instance enableSpeakerWithEnable:TRUE];
+	[CallManager.instance changeRouteToSpeaker];
 }
 
 - (IBAction)onRoutesClick:(id)sender {

Classes/LinphoneManager.h

@@ -190,7 +190,7 @@ typedef struct _LinphoneManagerSounds {
 - (void)migrationPerAccount;
 
 - (void)setupGSMInteraction;
-- (void)setBluetoothEnabled:(BOOL)enable;
+//- (void)setBluetoothEnabled:(BOOL)enable;
 - (BOOL)isCTCallCenterExist;
 
 @property (readonly) BOOL isTesting;

Classes/LinphoneManager.m

@@ -1731,7 +1731,7 @@ static int comp_call_state_paused(const LinphoneCall *call, const void *param) {
 - (void)audioRouteChangeListenerCallback:(NSNotification *)notif {
 	if (IPAD)
 		return;
-
+	
 	// there is at least one bug when you disconnect an audio bluetooth headset
 	// since we only get notification of route having changed, we cannot tell if that is due to:
 	// -bluetooth headset disconnected or
@@ -1760,7 +1760,7 @@ static int comp_call_state_paused(const LinphoneCall *call, const void *param) {
 		 userInfo:dict];
 	}
 }
-
+/*
 - (void)setBluetoothEnabled:(BOOL)enable {
 	if (_bluetoothAvailable) {
 		// The change of route will be done in enableSpeaker
@@ -1783,7 +1783,7 @@ static int comp_call_state_paused(const LinphoneCall *call, const void *param) {
 	}
 	[CallManager.instance enableSpeakerWithEnable:CallManager.instance.speakerEnabled];
 }
-
+*/
 #pragma mark - Call Functions
 - (void)send:(NSString *)replyText toChatRoom:(LinphoneChatRoom *)room {
 	LinphoneChatMessage *msg = linphone_chat_room_create_message(room, replyText.UTF8String);

Classes/LinphoneUI/UIBluetoothButton.m

@@ -29,14 +29,6 @@
 	if (au != 0)                                                                                                       \
 	LOGE(@"UIBluetoothButton error for %s: ret=%ld", method, au)
 
-- (void)onOn {
-	[LinphoneManager.instance setBluetoothEnabled:TRUE];
-}
-
-- (void)onOff {
-	[LinphoneManager.instance setBluetoothEnabled:FALSE];
-}
-
 - (bool)onUpdate {
 	return false;
 }

Classes/LinphoneUI/UISpeakerButton.m

@@ -45,16 +45,7 @@ INIT_WITH_COMMON_CF {
 		[self update];});
 }
 
-- (void)onOn {
-	[CallManager.instance enableSpeakerWithEnable:TRUE];
-}
-
-- (void)onOff {
-	[CallManager.instance enableSpeakerWithEnable:FALSE];
-}
-
 - (bool)onUpdate {
-	self.enabled = [CallManager.instance allowSpeaker];
 	return CallManager.instance.speakerEnabled;
 }
 

Classes/LinphoneUI/UIVideoButton.m

@@ -58,7 +58,8 @@ INIT_WITH_COMMON_CF {
 
 	if (!linphone_core_video_display_enabled(LC))
 		return;
-	[CallManager.instance enableSpeakerWithEnable:FALSE];
+	[CallManager.instance changeRouteToDefault];
+	//[CallManager.instance enableSpeakerWithEnable:FALSE];
 	[self setEnabled:FALSE];
 	[waitView startAnimating];