Replace bluetoothEnabled and speakerEnabled flags in the CallManager by isBluetoothEnabled and isSpeakerEnabled function, which will give real time state of the API based on what the linphone core getAudioDevice functions returns

Classes/CallManager.swift

@@ -39,8 +39,6 @@ import AVFoundation
 	let callController: CXCallController! // to support callkit
 	var lc: Core?
 	@objc var speakerBeforePause : Bool = false
-	@objc var speakerEnabled : Bool = false
-	@objc var bluetoothEnabled : Bool = false
 	@objc var nextCallIsTransfer: Bool = false
 	@objc var alreadyRegisteredForNotification: Bool = false
 	var referedFromCall: String?
@@ -126,26 +124,8 @@ 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) {
-			let route = newRoute.outputs[0].portType
-			allow = !( route == .lineOut || route == .headphones || (AudioHelper.bluetoothRoutes() as Array).contains(where: {($0 as! AVAudioSession.Port) == route}))
-		}
-
-		return allow
-	}
-	*/
 	
 	@objc func changeRouteToSpeaker() {
-		speakerEnabled = true
 		for device in lc!.audioDevices {
 			if (device.type == AudioDeviceType.Speaker) {
 				lc!.outputAudioDevice = device
@@ -153,46 +133,46 @@ import AVFoundation
 			}
 		}
 		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 {
-			if (enable && allowSpeaker()) {
-				try AVAudioSession.sharedInstance().overrideOutputAudioPort(.speaker)
-				UIDevice.current.isProximityMonitoringEnabled = false
-				bluetoothEnabled = false
-			} else {
-				try AVAudioSession.sharedInstance().overrideOutputAudioPort(.none)
-				let buildinPort = AudioHelper.builtinAudioDevice()
-				try AVAudioSession.sharedInstance().setPreferredInput(buildinPort)
-				UIDevice.current.isProximityMonitoringEnabled = (lc!.callsNb > 0)
+	@objc func isBluetoothAvailable() -> Bool {
+		for device in lc!.audioDevices {
+			if (device.type == AudioDeviceType.Bluetooth || device.type == AudioDeviceType.BluetoothA2DP) {
+				let name = device.deviceName
+				return true;
 			}
-		} catch {
-			Log.directLog(BCTBX_LOG_ERROR, text: "Failed to change audio route: err \(error)")
 		}
+		return false;
 	}
-*/
+	
+	@objc func isSpeakerEnabled() -> Bool {
+		if let outputDevice = lc!.outputAudioDevice {
+			return outputDevice.type == AudioDeviceType.Speaker
+		}
+		return false
+	}
+	
+	@objc func isBluetoothEnabled() -> Bool {
+		if let outputDevice = lc!.outputAudioDevice {
+			return (outputDevice.type == AudioDeviceType.Bluetooth || outputDevice.type == AudioDeviceType.BluetoothA2DP)
+		}
+		return false
+	}
+	
 	func requestTransaction(_ transaction: CXTransaction, action: String) {
 		callController.request(transaction) { error in
 			if let error = error {
@@ -575,7 +555,7 @@ import AVFoundation
 						// 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
-						CallManager.instance().bluetoothEnabled = false
+						//CallManager.instance().bluetoothEnabled = false
 					}
 
 					if UIApplication.shared.applicationState != .active && (callLog == nil || callLog?.status == .Missed || callLog?.status == .Aborted || callLog?.status == .EarlyAborted)  {
@@ -636,7 +616,8 @@ import AVFoundation
 			}
 
 			if (cstate == .IncomingReceived || cstate == .OutgoingInit || cstate == .Connected || cstate == .StreamsRunning) {
-				if ((call.currentParams?.videoEnabled ?? false) && !CallManager.speaker_already_enabled && !CallManager.instance().bluetoothEnabled) {
+			//	if ((call.currentParams?.videoEnabled ?? false) && !CallManager.speaker_already_enabled && !CallManager.instance().bluetoothEnabled) {
+				if ((call.currentParams?.videoEnabled ?? false) && !CallManager.speaker_already_enabled && !CallManager.instance().isBluetoothEnabled()) {
 					CallManager.instance().changeRouteToSpeaker()
 					CallManager.speaker_already_enabled = true
 				}

Classes/CallOutgoingView.m

@@ -185,8 +185,8 @@ static UICompositeViewDescription *compositeDescription = nil;
 		[_routesButton setOn];
 	}
 
-	_routesBluetoothButton.selected = CallManager.instance.bluetoothEnabled;
-	_routesSpeakerButton.selected = CallManager.instance.speakerEnabled;
+	_routesBluetoothButton.selected = [CallManager.instance isBluetoothEnabled];
+	_routesSpeakerButton.selected = [CallManager.instance isSpeakerEnabled];
 	_routesEarpieceButton.selected = !_routesBluetoothButton.selected && !_routesSpeakerButton.selected;
 
 	if (hidden != _routesView.hidden) {

Classes/CallView.m

@@ -493,8 +493,8 @@ static void hideSpinner(LinphoneCall *call, void *user_data) {
 		[_routesButton setOn];
 	}
 
-	_routesBluetoothButton.selected = CallManager.instance.bluetoothEnabled;
-	_routesSpeakerButton.selected = CallManager.instance.speakerEnabled;
+	_routesBluetoothButton.selected = [CallManager.instance isBluetoothEnabled];
+	_routesSpeakerButton.selected = [CallManager.instance isSpeakerEnabled];
 	_routesEarpieceButton.selected = !_routesBluetoothButton.selected && !_routesSpeakerButton.selected;
 
 	if (hidden != _routesView.hidden) {

Classes/LinphoneManager.h

@@ -190,7 +190,6 @@ typedef struct _LinphoneManagerSounds {
 - (void)migrationPerAccount;
 
 - (void)setupGSMInteraction;
-//- (void)setBluetoothEnabled:(BOOL)enable;
 - (BOOL)isCTCallCenterExist;
 
 @property (readonly) BOOL isTesting;

Classes/LinphoneManager.m

@@ -1732,58 +1732,15 @@ static int comp_call_state_paused(const LinphoneCall *call, const void *param) {
 	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
-	// -user wanted to use earpiece
-	// the only thing we can assume is that when we lost a device, it must be a bluetooth one (strong hypothesis though)
-	if ([[notif.userInfo valueForKey:AVAudioSessionRouteChangeReasonKey] integerValue] == AVAudioSessionRouteChangeReasonOldDeviceUnavailable)
-		_bluetoothAvailable = NO;
-
-	AVAudioSessionRouteDescription *newRoute = [AVAudioSession sharedInstance].currentRoute;
-
-	if (newRoute && newRoute.outputs.count > 0) {
-		NSString *route = newRoute.outputs[0].portType;
-		LOGI(@"Current audio route is [%s]", [route UTF8String]);
-		linphone_core_audio_route_changed(theLinphoneCore);
-
-		CallManager.instance.speakerEnabled = [route isEqualToString:AVAudioSessionPortBuiltInSpeaker];
-		if (([[AudioHelper bluetoothRoutes] containsObject:route]) && !CallManager.instance.speakerEnabled) {
-			_bluetoothAvailable = TRUE;
-			CallManager.instance.bluetoothEnabled = TRUE;
-		} else
-			CallManager.instance.bluetoothEnabled = FALSE;
-
-		NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:_bluetoothAvailable], @"available", nil];
-		[NSNotificationCenter.defaultCenter postNotificationName:kLinphoneBluetoothAvailabilityUpdate
-		 object:self
-		 userInfo:dict];
-	}
+	_bluetoothAvailable = [CallManager.instance isBluetoothAvailable];
+	
+	NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:_bluetoothAvailable], @"available", nil];
+	[NSNotificationCenter.defaultCenter postNotificationName:kLinphoneBluetoothAvailabilityUpdate
+	 object:self
+	 userInfo:dict];
+	
 }
-/*
-- (void)setBluetoothEnabled:(BOOL)enable {
-	if (_bluetoothAvailable) {
-		// The change of route will be done in enableSpeaker
-		CallManager.instance.bluetoothEnabled = enable;
-		if (CallManager.instance.bluetoothEnabled) {
-			NSError *err = nil;
-			AVAudioSessionPortDescription *_bluetoothPort = [AudioHelper bluetoothAudioDevice];
-			[[AVAudioSession sharedInstance] setPreferredInput:_bluetoothPort error:&err];
-			// if setting bluetooth failed, it must be because the device is not available
-			// anymore (disconnected), so deactivate bluetooth.
-			if (err) {
-				CallManager.instance.bluetoothEnabled = FALSE;
-				LOGE(@"Failed to enable bluetooth: err %@", err.localizedDescription);
-				err = nil;
-			} else {
-				CallManager.instance.speakerEnabled = FALSE;
-				return;
-			}
-		}
-	}
-	[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);
@@ -2108,7 +2065,7 @@ static int comp_call_state_paused(const LinphoneCall *call, const void *param) {
 		if ([ct currentCalls] != nil) {
 			if (call) {
 				LOGI(@"Pausing SIP call because GSM call");
-				CallManager.instance.speakerBeforePause = CallManager.instance.speakerEnabled;
+				CallManager.instance.speakerBeforePause = [CallManager.instance isSpeakerEnabled];
 				linphone_call_pause(call);
 				[self startCallPausedLongRunningTask];
 			} else if (linphone_core_is_in_conference(theLinphoneCore)) {

Classes/LinphoneUI/UIPauseButton.m

@@ -85,7 +85,7 @@
 				if ([CallManager callKitEnabled]) {
 					[CallManager.instance setHeldWithCall:call hold:true];
 				} else {
-					CallManager.instance.speakerBeforePause = CallManager.instance.speakerEnabled;
+					CallManager.instance.speakerBeforePause = [CallManager.instance isSpeakerEnabled];
 					linphone_call_pause(call);
 				}
 			} else {
@@ -106,7 +106,7 @@
 				if ([CallManager callKitEnabled]) {
 					[CallManager.instance setHeldWithCall:currentCall hold:true];
 				} else {
-					CallManager.instance.speakerBeforePause = CallManager.instance.speakerEnabled;
+					CallManager.instance.speakerBeforePause = [CallManager.instance isSpeakerEnabled];
 					linphone_call_pause(currentCall);
 				}
 			} else {

Classes/LinphoneUI/UISpeakerButton.m

@@ -34,6 +34,15 @@ INIT_WITH_COMMON_CF {
 	return self;
 }
 
+- (void)onOn {
+	[CallManager.instance changeRouteToSpeaker];
+}
+
+- (void)onOff {
+	[CallManager.instance changeRouteToDefault];
+}
+
+
 - (void)dealloc {
 	[NSNotificationCenter.defaultCenter removeObserver:self];
 }
@@ -46,7 +55,7 @@ INIT_WITH_COMMON_CF {
 }
 
 - (bool)onUpdate {
-	return CallManager.instance.speakerEnabled;
+	return [CallManager.instance isSpeakerEnabled];
 }
 
 @end

Classes/PhoneMainView.m

@@ -381,7 +381,7 @@ static RootViewManager *rootViewManagerInstance = nil;
 			if (![LinphoneManager.instance isCTCallCenterExist]) {
 				/*only register CT call center CB for connected call*/
 				[LinphoneManager.instance setupGSMInteraction];
-				[[UIDevice currentDevice] setProximityMonitoringEnabled:!(CallManager.instance.speakerEnabled || CallManager.instance.bluetoothEnabled)];
+				[[UIDevice currentDevice] setProximityMonitoringEnabled:!([CallManager.instance isSpeakerEnabled] ||  [CallManager.instance isBluetoothEnabled])];
 			}
 			break;
 		}

Classes/ProviderDelegate.swift

@@ -205,7 +205,7 @@ extension ProviderDelegate: CXProviderDelegate {
 				if (call!.params?.localConferenceMode ?? false) {
 					return
 				}
-				CallManager.instance().speakerBeforePause = CallManager.instance().speakerEnabled
+				CallManager.instance().speakerBeforePause = CallManager.instance().isSpeakerEnabled()
 				try call!.pause()
 			} else {
 				if (call?.conference != nil && CallManager.instance().lc?.callsNb ?? 0 > 1) {