From 800d07a633e8cffe92c3809115072c63f35632eb Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Mon, 17 Oct 2022 06:42:49 +0200
Subject: [PATCH] Add API to query all AutomationControls from an Automtable

This is in preparation for selective MixerScene restore.
---
 libs/ardour/ardour/automatable.h |  2 ++
 libs/ardour/ardour/route.h       |  2 ++
 libs/ardour/automatable.cc       | 11 +++++++++++
 libs/ardour/route.cc             | 13 +++++++++++++
 4 files changed, 28 insertions(+)

diff --git a/libs/ardour/ardour/automatable.h b/libs/ardour/ardour/automatable.h
index c4b09cb367..6eb1ce01fc 100644
--- a/libs/ardour/ardour/automatable.h
+++ b/libs/ardour/ardour/automatable.h
@@ -55,6 +55,8 @@ public:
 
 	virtual ~Automatable();
 
+	virtual void automatables (AutomationControlSet&) const;
+
 	static bool skip_saving_automation; // to be used only by session-state
 
 	boost::shared_ptr<Evoral::Control> control_factory(const Evoral::Parameter& id);
diff --git a/libs/ardour/ardour/route.h b/libs/ardour/ardour/route.h
index b3a4ca1f8c..af28bc2d6b 100644
--- a/libs/ardour/ardour/route.h
+++ b/libs/ardour/ardour/route.h
@@ -258,6 +258,8 @@ public:
 
 	boost::shared_ptr<AutomationControl> automation_control_recurse (PBD::ID const & id) const;
 
+	 void automatables (AutomationControlSet&) const;
+
 	/* special processors */
 
 	boost::shared_ptr<InternalSend>     monitor_send() const { return _monitor_send; }
diff --git a/libs/ardour/automatable.cc b/libs/ardour/automatable.cc
index 3dba0f998a..8d62a27c5e 100644
--- a/libs/ardour/automatable.cc
+++ b/libs/ardour/automatable.cc
@@ -610,6 +610,17 @@ Automatable::control_factory(const Evoral::Parameter& param)
 	return boost::shared_ptr<Evoral::Control>(control);
 }
 
+void
+Automatable::automatables (AutomationControlSet& s) const
+{
+	for (auto const& i : _controls) {
+		boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl> (i.second);
+		if (ac) {
+			s.insert (ac);
+		}
+	}
+}
+
 boost::shared_ptr<AutomationControl>
 Automatable::automation_control (PBD::ID const & id) const
 {
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index 8e9b9bad1f..5364daf958 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -6306,6 +6306,19 @@ Route::automation_control_recurse (PBD::ID const & id) const
 	return boost::shared_ptr<AutomationControl> ();
 }
 
+void
+Route::automatables (AutomationControlSet& s) const
+{
+	Automatable::automatables (s);
+	if  (_pannable) {
+		_pannable->automatables (s);
+	}
+	Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
+	for (auto const& i : _processors) {
+		i->automatables (s);
+	}
+}
+
 SlavableControlList
 Route::slavables () const
 {