only subdivide plugin-cycle when automation is playing

PluginInsert::automation_run() subdivides plugin-run on every
control-port automation event (without splitting the process cycle).

libevoral has no automation-control context, hence this function
must be implemented by Automatable.

5 files changed, 43 insertions, 33 deletions

diff --git a/libs/ardour/ardour/automatable.h b/libs/ardour/ardour/automatable.h
index ddf9eee8bb..c9e14cfae5 100644
--- a/libs/ardour/ardour/automatable.h
+++ b/libs/ardour/ardour/automatable.h
@@ -57,6 +57,7 @@ public:
 	automation_control (const Evoral::Parameter& id) const;
 
 	virtual void add_control(boost::shared_ptr<Evoral::Control>);
+	virtual bool find_next_event(double start, double end, Evoral::ControlEvent& ev, bool only_active = true) const;
 	void clear_controls ();
 
         virtual void transport_located (framepos_t now);
diff --git a/libs/ardour/automatable.cc b/libs/ardour/automatable.cc
index e0c21a6f6f..0b316890bc 100644
--- a/libs/ardour/automatable.cc
+++ b/libs/ardour/automatable.cc
@@ -501,3 +501,42 @@ Automatable::value_as_string (boost::shared_ptr<AutomationControl> ac) const
 {
 	return ARDOUR::value_as_string(ac->desc(), ac->get_value());
 }
+
+bool
+Automatable::find_next_event (double now, double end, Evoral::ControlEvent& next_event, bool only_active) const
+{
+	Controls::const_iterator li;
+
+	next_event.when = std::numeric_limits<double>::max();
+
+	for (li = _controls.begin(); li != _controls.end(); ++li) {
+		boost::shared_ptr<AutomationControl> c
+			= boost::dynamic_pointer_cast<AutomationControl>(li->second);
+
+		if (only_active && (!c || !c->automation_playback())) {
+			continue;
+		}
+
+		Evoral::ControlList::const_iterator i;
+		boost::shared_ptr<const Evoral::ControlList> alist (li->second->list());
+		Evoral::ControlEvent cp (now, 0.0f);
+		if (!alist) {
+			continue;
+		}
+
+		for (i = lower_bound (alist->begin(), alist->end(), &cp, Evoral::ControlList::time_comparator);
+		     i != alist->end() && (*i)->when < end; ++i) {
+			if ((*i)->when > now) {
+				break;
+			}
+		}
+
+		if (i != alist->end() && (*i)->when < end) {
+			if ((*i)->when < next_event.when) {
+				next_event.when = (*i)->when;
+			}
+		}
+	}
+
+	return next_event.when != std::numeric_limits<double>::max();
+}
diff --git a/libs/evoral/evoral/ControlSet.hpp b/libs/evoral/evoral/ControlSet.hpp
index b7d50d7d2e..f1c2d96f49 100644
--- a/libs/evoral/evoral/ControlSet.hpp
+++ b/libs/evoral/evoral/ControlSet.hpp
@@ -60,7 +60,7 @@ public:
 
 	virtual void add_control(boost::shared_ptr<Control>);
 
-	bool find_next_event(double start, double end, ControlEvent& ev) const;
+	virtual bool find_next_event(double start, double end, ControlEvent& ev, bool only_active = true) const = 0;
 
 	virtual bool controls_empty() const { return _controls.size() == 0; }
 	virtual void clear_controls();
diff --git a/libs/evoral/src/ControlSet.cpp b/libs/evoral/src/ControlSet.cpp
index f24c410d73..cc8d7c60a7 100644
--- a/libs/evoral/src/ControlSet.cpp
+++ b/libs/evoral/src/ControlSet.cpp
@@ -87,38 +87,6 @@ ControlSet::control (const Parameter& parameter, bool create_if_missing)
 	}
 }
 
-bool
-ControlSet::find_next_event (double now, double end, ControlEvent& next_event) const
-{
-	Controls::const_iterator li;
-
-	next_event.when = std::numeric_limits<double>::max();
-
-	for (li = _controls.begin(); li != _controls.end(); ++li) {
-		ControlList::const_iterator i;
-		boost::shared_ptr<const ControlList> alist (li->second->list());
-		ControlEvent cp (now, 0.0f);
-		if (!alist) {
-			continue;
-		}
-
-		for (i = lower_bound (alist->begin(), alist->end(), &cp, ControlList::time_comparator);
-		     i != alist->end() && (*i)->when < end; ++i) {
-			if ((*i)->when > now) {
-				break;
-			}
-		}
-
-		if (i != alist->end() && (*i)->when < end) {
-			if ((*i)->when < next_event.when) {
-				next_event.when = (*i)->when;
-			}
-		}
-	}
-
-	return next_event.when != std::numeric_limits<double>::max();
-}
-
 void
 ControlSet::clear_controls ()
 {
diff --git a/libs/evoral/test/SequenceTest.hpp b/libs/evoral/test/SequenceTest.hpp
index da1991efc8..3207541571 100644
--- a/libs/evoral/test/SequenceTest.hpp
+++ b/libs/evoral/test/SequenceTest.hpp
@@ -51,6 +51,8 @@ class MySequence : public Sequence<Time> {
 public:
 	MySequence(DummyTypeMap&map) : Sequence<Time>(map) {}
 
+	virtual bool find_next_event(double start, double end, ControlEvent& ev, bool only_active) const { return false; }
+
 	boost::shared_ptr<Control> control_factory(const Parameter& param) {
 		const Evoral::ParameterDescriptor desc;
 		boost::shared_ptr<ControlList>    list(new ControlList(param, desc));