TTX subs menu, not ready yet, just backup of current code

git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-experimental@184 e54a6e83-5905-42d5-8d5c-058d10e6a962

src/driver/framebuffer.cpp

@@ -1423,3 +1423,16 @@ void CFrameBuffer::showFrame(const std::string & filename)
 	else
 		videoDecoder->ShowPicture((iconBasePath + filename).c_str());
 }
+
+bool CFrameBuffer::Lock()
+{
+	if(locked)
+		return false;
+	locked = true;
+	return true;
+}
+
+void CFrameBuffer::Unlock()
+{
+	locked = false;
+}