libcamera: object: Use bound method activePack() for invokeMethod()

The BoundMethodBase::activatePack() and the internal
Object::invokeMethod() are duplicate implementation of the same
mechanism. Use the former to replace the latter.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

include/libcamera/bound_method.h

@@ -37,7 +37,7 @@ public:
 	Object *object() const { return object_; }
 	ConnectionType connectionType() const { return connectionType_; }
 
-	void activatePack(void *pack);
+	void activatePack(void *pack, bool deleteMethod);
 	virtual void invokePack(void *pack) = 0;
 
 protected:
@@ -109,7 +109,7 @@ public:
 	void activate(Args... args)
 	{
 		if (this->object_)
-			BoundMethodBase::activatePack(new PackType{ args... });
+			BoundMethodBase::activatePack(new PackType{ args... }, false);
 		else
 			(static_cast<T *>(this->obj_)->*func_)(args...);
 	}

include/libcamera/object.h

@@ -33,10 +33,12 @@ public:
 	void invokeMethod(void (T::*func)(Args...), Args... args)
 	{
 		T *obj = static_cast<T *>(this);
-		BoundMethodBase *method = new BoundMemberMethod<T, Args...>(obj, this, func);
+		BoundMethodBase *method =
+			new BoundMemberMethod<T, Args...>(obj, this, func,
+							  ConnectionTypeQueued);
 		void *pack = new typename BoundMemberMethod<T, Args...>::PackType{ args... };
 
-		invokeMethod(method, pack);
+		method->activatePack(pack, true);
 	}
 
 	Thread *thread() const { return thread_; }
@@ -53,8 +55,6 @@ private:
 	friend class BoundMethodBase;
 	friend class Thread;
 
-	void invokeMethod(BoundMethodBase *method, void *pack);
-
 	void notifyThreadMove();
 
 	void connect(SignalBase *signal);