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diff --git a/src/server/events/SendBinding.hpp b/src/server/events/SendBinding.hpp
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+/* This file is part of Ingen.
+ * Copyright 2007-2011 David 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 INGEN_EVENTS_SENDBINDING_HPP
+#define INGEN_EVENTS_SENDBINDING_HPP
+
+#include "server/Event.hpp"
+#include "server/ControlBindings.hpp"
+#include "server/types.hpp"
+
+namespace Ingen {
+namespace Server {
+
+class PortImpl;
+
+namespace Events {
+
+/** A special event used internally to send control bindings from the audio thread.
+ *
+ * See SendPortValue documentation for details.
+ *
+ * \ingroup engine
+ */
+class SendBinding : public Event
+{
+public:
+	inline SendBinding(
+			Engine&                    engine,
+			SampleCount                timestamp,
+			PortImpl*                  port,
+			ControlBindings::Type      type,
+			int16_t                    num)
+		: Event(engine, SharedPtr<Request>(), timestamp)
+		, _port(port)
+		, _type(type)
+		, _num(num)
+	{
+		assert(_port);
+		switch (type) {
+		case ControlBindings::MIDI_CC:
+			assert(num >= 0 && num < 128);
+			break;
+		case ControlBindings::MIDI_RPN:
+			assert(num >= 0 && num < 16384);
+			break;
+		case ControlBindings::MIDI_NRPN:
+			assert(num >= 0 && num < 16384);
+		default:
+			break;
+		}
+	}
+
+	inline SendBinding& operator=(const SendBinding& ev) {
+		_port = ev._port;
+		_type = ev._type;
+		_num  = ev._num;
+		return *this;
+	}
+
+	void post_process();
+
+private:
+	PortImpl*             _port;
+	ControlBindings::Type _type;
+	int16_t               _num;
+};
+
+} // namespace Server
+} // namespace Ingen
+} // namespace Events
+
+#endif // INGEN_EVENTS_SENDBINDING_HPP