add API for controlling and determining active status of a SceneChange

Conflicts:
	libs/ardour/ardour/scene_change.h

1 files changed, 8 insertions, 0 deletions

diff --git a/libs/ardour/midi_scene_changer.cc b/libs/ardour/midi_scene_changer.cc
index bd32ff308b..6288a6fc84 100644
--- a/libs/ardour/midi_scene_changer.cc
+++ b/libs/ardour/midi_scene_changer.cc
@@ -96,6 +96,10 @@ MIDISceneChanger::gather (const Locations::LocationList& locations)
 void
 MIDISceneChanger::rt_deliver (MidiBuffer& mbuf, framepos_t when, boost::shared_ptr<MIDISceneChange> msc)
 {
+        if (!msc->active()) {
+                return;
+        }
+
 	uint8_t buf[4];
 	size_t cnt;
 
@@ -121,6 +125,10 @@ MIDISceneChanger::rt_deliver (MidiBuffer& mbuf, framepos_t when, boost::shared_p
 void
 MIDISceneChanger::non_rt_deliver (boost::shared_ptr<MIDISceneChange> msc)
 {
+        if (!msc->active()) {
+                return;
+        }
+
 	uint8_t buf[4];
 	size_t cnt;
 	boost::shared_ptr<AsyncMIDIPort> aport = boost::dynamic_pointer_cast<AsyncMIDIPort>(output_port);