Add API to expand/flatten AC groups

3 files changed, 14 insertions, 0 deletions

diff --git a/libs/ardour/ardour/automation_control.h b/libs/ardour/ardour/automation_control.h
index 6787abd87a..6fe88ca52d 100644
--- a/libs/ardour/ardour/automation_control.h
+++ b/libs/ardour/ardour/automation_control.h
@@ -119,6 +119,8 @@ public:
 	const ARDOUR::Session& session() const { return _session; }
 	void commit_transaction (bool did_write);
 
+	ControlList grouped_controls () const;
+
 protected:
 	ARDOUR::Session& _session;
 	boost::shared_ptr<ControlGroup> _group;
diff --git a/libs/ardour/ardour/types.h b/libs/ardour/ardour/types.h
index 3adfaf5c94..7a0c5762b7 100644
--- a/libs/ardour/ardour/types.h
+++ b/libs/ardour/ardour/types.h
@@ -23,6 +23,7 @@
 #include <istream>
 #include <vector>
 #include <map>
+#include <set>
 #include <boost/shared_ptr.hpp>
 #include <sys/types.h>
 #include <stdint.h>
@@ -570,6 +571,7 @@ namespace ARDOUR {
 	typedef std::list<boost::weak_ptr  <Stripable> > WeakStripableList;
 	typedef std::list<boost::shared_ptr<AutomationControl> > ControlList;
 	typedef std::list<boost::shared_ptr<SlavableAutomationControl> > SlavableControlList;
+	typedef std::set <boost::shared_ptr<AutomationControl> > AutomationControlSet;
 
 	typedef std::list<boost::shared_ptr<VCA> > VCAList;
 
diff --git a/libs/ardour/automation_control.cc b/libs/ardour/automation_control.cc
index 30eb19fd5a..acd4c7a760 100644
--- a/libs/ardour/automation_control.cc
+++ b/libs/ardour/automation_control.cc
@@ -136,6 +136,16 @@ AutomationControl::set_value (double val, PBD::Controllable::GroupControlDisposi
 	}
 }
 
+ControlList
+AutomationControl::grouped_controls () const
+{
+	if (_group && _group->use_me (PBD::Controllable::UseGroup)) {
+		return _group->controls ();
+	} else {
+		return ControlList ();
+	}
+}
+
 /** Set the value and do the right thing based on automation state
  *  (e.g. record if necessary, etc.)
  *  @param value `user' value