optimisations on control paths that are used for every midi event

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@2167 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 16 insertions, 1 deletions

diff --git a/libs/surfaces/mackie/controls.h b/libs/surfaces/mackie/controls.h
index 453ef4a091..a4e259465c 100644
--- a/libs/surfaces/mackie/controls.h
+++ b/libs/surfaces/mackie/controls.h
@@ -170,7 +170,7 @@ public:
 	}
 
 	/// type() << 8 + midi id of the control. This
-	/// provides a unique id of any control on the surface.
+	/// provides a unique id for any control on the surface.
 	int id() const
 	{
 		return ( type() << 8 ) + _id;
@@ -211,6 +211,10 @@ public:
 	
 	virtual type_t type() const = 0;
 	
+	/// Return true if this control is the one and only
+	/// Jog Wheel
+	virtual bool is_jog() const { return false; }
+
 private:
 	int _id;
 	int _ordinal;
@@ -307,6 +311,17 @@ private:
 	LedRing _led_ring;
 };
 
+class Jog : public Pot
+{
+public:
+	Jog( int id, int ordinal, std::string name, Group & group )
+	: Pot( id, ordinal, name, group )
+	{
+	}
+
+	virtual bool is_jog() const { return true; }
+};
+
 }
 
 #endif