StimBuff: customize stop() delay; add stimFrameProductionTimesliceInd

include/user/stimulusBuffer.h

@@ -54,7 +54,7 @@ public:
 	shouldContinue(false), timer(ioService)
 	{}
 
-	~StimulusBuffer() = default;
+	virtual ~StimulusBuffer() = default;
 
 	// Non-copyable, movable
 	StimulusBuffer(const StimulusBuffer&) = delete;
@@ -71,6 +71,15 @@ public:
 
 	void stop();
 
+protected:
+	// Virtual functions for derived classes to override
+	virtual int getStopDelayMs() const
+	{
+		return CONFIG_STIMBUFF_FRAME_PERIOD_MS;
+	}
+
+	virtual void stimFrameProductionTimesliceInd() = 0;
+
 private:
 	void onTimeout(const boost::system::error_code& error);
 
@@ -112,10 +121,9 @@ inline void StimulusBuffer::stop()
 	boost::asio::deadline_timer delayTimer(ioService);
 	AsynchronousBridge bridge(ioService);
 
-	// Set up the delay for CONFIG_STIMBUFF_FRAME_PERIOD_MS to let in-flight
-	// operation finish
+	// Set up the delay to let in-flight operation finish
 	delayTimer.expires_from_now(
-		boost::posix_time::milliseconds(CONFIG_STIMBUFF_FRAME_PERIOD_MS));
+		boost::posix_time::milliseconds(getStopDelayMs()));
 
 	delayTimer.async_wait(
 		[&bridge](const boost::system::error_code& error)
@@ -166,7 +174,8 @@ inline void StimulusBuffer::onTimeout(const boost::system::error_code& error)
 	else
 		{ nextWakeupDelayMs = CONFIG_STIMBUFF_FRAME_RETRY_DELAY_MS; }
 
-	// Placeholder handler (empty for now)
+	// Call the derived class's frame production handler
+	stimFrameProductionTimesliceInd();
 	// Note: The lock should be released when frame production completes
 
 	// Schedule next timeout with the pre-determined duration