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diff --git a/src/engine/MessageContext.hpp b/src/engine/MessageContext.hpp
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+/* This file is part of Ingen.
+ * Copyright (C) 2007-2008 Dave Robillard <http://drobilla.net>
+ * 
+ * Ingen is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ * 
+ * Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef MESSAGECONTEXT_H
+#define MESSAGECONTEXT_H
+
+#include "EventSink.hpp"
+#include "Context.hpp"
+
+namespace Ingen {
+
+class NodeImpl;
+
+/** Context of a message_process() call.
+ *
+ * The message context is a non-hard-realtime thread used to execute things
+ * that can take too long to execute in an audio thread, and do sloppy timed
+ * event propagation and scheduling.  Interface to plugins via the
+ * LV2 contexts extension.
+ *
+ * \ingroup engine
+ */
+class MessageContext : public Context
+{
+public:
+	MessageContext(Engine& engine)
+		: Context(engine, MESSAGE)
+	{}
+
+	void run(NodeImpl* node);
+};
+
+
+} // namespace Ingen
+
+#endif // MESSAGECONTEXT_H
+