Add AutomationControl::set_value_unchecked() and AutomationControl::writable() and use them.

Classes derived from AutomationControl now check ::writable() in their ::set_value() methods to ensure that they
do not attempt to overwrite data sent to them while automation playback is underway.

1 files changed, 8 insertions, 0 deletions

diff --git a/libs/ardour/track.cc b/libs/ardour/track.cc
index e99d07f047..c4c82808bd 100644
--- a/libs/ardour/track.cc
+++ b/libs/ardour/track.cc
@@ -192,6 +192,14 @@ Track::RecEnableControl::RecEnableControl (boost::shared_ptr<Track> t)
 void
 Track::RecEnableControl::set_value (double val)
 {
+	if (writable()) {
+		set_value_unchecked (val);
+	}
+}
+
+void
+Track::RecEnableControl::set_value_unchecked (double val)
+{
 	boost::shared_ptr<Track> t = track.lock ();
 	if (!t) {
 		return;