Frame timing

apps/LoopThroughWithOpenGLCompositing/videoio/RenderOutputQueue.cpp

@@ -47,6 +47,18 @@ bool RenderOutputQueue::TryPop(RenderOutputFrame& frame)
 	return true;
 }
 
+bool RenderOutputQueue::DropOldestFrame()
+{
+	std::lock_guard<std::mutex> lock(mMutex);
+	if (mReadyFrames.empty())
+		return false;
+
+	ReleaseFrame(mReadyFrames.front());
+	mReadyFrames.pop_front();
+	++mDroppedCount;
+	return true;
+}
+
 void RenderOutputQueue::Clear()
 {
 	std::lock_guard<std::mutex> lock(mMutex);