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diff --git a/libs/ardour/ardour/mute_master.h b/libs/ardour/ardour/mute_master.h
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+/*
+    Copyright (C) 2009 Paul Davis 
+
+    This program 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.
+
+    This program 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 more 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __ardour_mute_master_h__
+#define __ardour_mute_master_h__
+
+#include "evoral/Parameter.hpp"
+#include "ardour/automation_control.h"
+#include "ardour/automation_list.h"
+
+namespace ARDOUR {
+
+class Session;
+
+class MuteMaster : public AutomationControl
+{
+  public:
+	enum MutePoint {
+		PreFader  = 0x1,
+		PostFader = 0x2,
+		Listen    = 0x4,
+		Main      = 0x8
+	};
+	
+	MuteMaster (Session& s, const std::string& name);
+	~MuteMaster() {}
+
+	bool muted_pre_fader() const  { return _mute_point & PreFader; }
+	bool muted_post_fader() const { return _mute_point & PostFader; }
+	bool muted_listen() const     { return _mute_point & Listen; }
+	bool muted_main () const      { return _mute_point & Main; }
+
+	bool muted_at (MutePoint mp) const { return _mute_point & mp; }
+	bool muted() const { return _mute_point != MutePoint (0) && get_value() != 0.0; }
+	
+	gain_t mute_gain_at (MutePoint) const;
+
+	void clear_mute ();
+	void mute_at (MutePoint);
+	void unmute_at (MutePoint);
+
+	void mute (bool yn);
+
+	/* Controllable interface */
+
+	void set_value (float); /* note: float is used as a bitfield of MutePoints */
+	float get_value () const;
+
+	sigc::signal<void> MutePointChanged;
+
+	XMLNode& get_state();
+	int set_state(const XMLNode& node);
+
+  private:
+	AutomationList* _automation;
+	MutePoint _mute_point;
+};
+
+} // namespace ARDOUR
+
+#endif /*__ardour_mute_master_h__ */