move Amp::GainControl out into its own source module and out of Amp

2 files changed, 60 insertions, 23 deletions

diff --git a/libs/ardour/ardour/amp.h b/libs/ardour/ardour/amp.h
index 108694de90..bd4c8b1259 100644
--- a/libs/ardour/ardour/amp.h
+++ b/libs/ardour/ardour/amp.h
@@ -29,6 +29,7 @@
 namespace ARDOUR {
 
 class BufferSet;
+class GainControl;
 class IO;
 
 /** Applies a declick operation to all audio inputs, passing the same number of
@@ -76,32 +77,13 @@ public:
 
 	static void update_meters();
 
-	/* automation */
 
-	struct GainControl : public AutomationControl {
-		GainControl (Session& session, const Evoral::Parameter &param,
-		             boost::shared_ptr<AutomationList> al = boost::shared_ptr<AutomationList>());
-
-		void set_value (double val, PBD::Controllable::GroupControlDisposition group_override);
-		void set_value_unchecked (double);
-
-		double internal_to_interface (double) const;
-		double interface_to_internal (double) const;
-		double internal_to_user (double) const;
-		double user_to_internal (double) const;
-		std::string get_user_string () const;
-
-		double lower_db;
-		double range_db;
-	};
-
-
-	boost::shared_ptr<GainControl> gain_control() {
-		return boost::dynamic_pointer_cast<GainControl> (_gain_control);
+	boost::shared_ptr<AutomationControl> gain_control() {
+		return _gain_control;
 	}
 
-	boost::shared_ptr<const GainControl> gain_control() const {
-		return boost::dynamic_pointer_cast<GainControl> (_gain_control);
+	boost::shared_ptr<const AutomationControl> gain_control() const {
+		return _gain_control;
 	}
 
 	std::string value_as_string (boost::shared_ptr<AutomationControl>) const;
diff --git a/libs/ardour/ardour/gain_control.h b/libs/ardour/ardour/gain_control.h
new file mode 100644
index 0000000000..17c250151a
--- /dev/null
+++ b/libs/ardour/ardour/gain_control.h
@@ -0,0 +1,55 @@
+/*
+    Copyright (C) 2006-2016 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_gain_control_h__
+#define __ardour_gain_control_h__
+
+#include <string>
+#include <boost/shared_ptr.hpp>
+
+#include "pbd/controllable.h"
+
+#include "evoral/Parameter.hpp"
+
+#include "ardour/automation_control.h"
+#include "ardour/libardour_visibility.h"
+
+namespace ARDOUR {
+
+class Session;
+
+struct LIBARDOUR_API GainControl : public AutomationControl {
+	GainControl (Session& session, const Evoral::Parameter &param,
+	             boost::shared_ptr<AutomationList> al = boost::shared_ptr<AutomationList>());
+
+	void set_value (double val, PBD::Controllable::GroupControlDisposition group_override);
+	void set_value_unchecked (double);
+
+	double internal_to_interface (double) const;
+	double interface_to_internal (double) const;
+	double internal_to_user (double) const;
+	double user_to_internal (double) const;
+	std::string get_user_string () const;
+
+	double lower_db;
+	double range_db;
+};
+
+} /* namespace */
+
+#endif /* __ardour_gain_control_h__ */