Apply master-value to automation on disconnect.

2 files changed, 15 insertions, 0 deletions

diff --git a/libs/evoral/evoral/ControlList.hpp b/libs/evoral/evoral/ControlList.hpp
index 2a80ad5bd4..515067de04 100644
--- a/libs/evoral/evoral/ControlList.hpp
+++ b/libs/evoral/evoral/ControlList.hpp
@@ -123,6 +123,8 @@ public:
 	void slide (iterator before, double distance);
 	void shift (double before, double distance);
 
+	void y_transform (boost::function<double(double)> callback);
+
 	/** add automation events
 	 * @param when absolute time in samples
 	 * @param value parameter value
diff --git a/libs/evoral/src/ControlList.cpp b/libs/evoral/src/ControlList.cpp
index ce8ea89fc9..92234a6ea7 100644
--- a/libs/evoral/src/ControlList.cpp
+++ b/libs/evoral/src/ControlList.cpp
@@ -251,6 +251,19 @@ ControlList::extend_to (double when)
 }
 
 void
+ControlList::y_transform (boost::function<double(double)> callback)
+{
+	{
+		Glib::Threads::RWLock::WriterLock lm (_lock);
+		for (iterator i = _events.begin(); i != _events.end(); ++i) {
+			(*i)->value = callback ((*i)->value);
+		}
+		mark_dirty ();
+	}
+	maybe_signal_changed ();
+}
+
+void
 ControlList::_x_scale (double factor)
 {
 	for (iterator i = _events.begin(); i != _events.end(); ++i) {