From 8a6f6307368474d7f2f7f5e67fab440b8c91a7bf Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Wed, 30 Jun 2021 19:22:22 +0200
Subject: [PATCH] Add Lua API to query all automatable params

---
 libs/ardour/ardour/automatable.h | 4 ++++
 libs/ardour/automatable.cc       | 6 ++++++
 libs/ardour/luabindings.cc       | 6 +++++-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/libs/ardour/ardour/automatable.h b/libs/ardour/ardour/automatable.h
index 5b413f0b54..2bb81622b2 100644
--- a/libs/ardour/ardour/automatable.h
+++ b/libs/ardour/ardour/automatable.h
@@ -101,6 +101,10 @@ public:
 	void protect_automation ();
 
 	const std::set<Evoral::Parameter>& what_can_be_automated() const { return _can_automate_list; }
+
+	/** API for Lua binding */
+	std::vector<Evoral::Parameter> all_automatable_params () const;
+
 	void what_has_existing_automation (std::set<Evoral::Parameter>&) const;
 
 	static const std::string xml_node_name;
diff --git a/libs/ardour/automatable.cc b/libs/ardour/automatable.cc
index 263b35f35d..7649f36bcb 100644
--- a/libs/ardour/automatable.cc
+++ b/libs/ardour/automatable.cc
@@ -227,6 +227,12 @@ Automatable::can_automate (Evoral::Parameter what)
 	_can_automate_list.insert (what);
 }
 
+std::vector<Evoral::Parameter>
+Automatable::all_automatable_params () const
+{
+	return std::vector<Evoral::Parameter> (_can_automate_list.begin (), _can_automate_list.end ());
+}
+
 /** \a legacy_param is used for loading legacy sessions where an object (IO, Panner)
  * had a single automation parameter, with it's type implicit.  Derived objects should
  * pass that type and it will be used for the untyped AutomationList found.
diff --git a/libs/ardour/luabindings.cc b/libs/ardour/luabindings.cc
index f2d3d6647c..b7033cf4f3 100644
--- a/libs/ardour/luabindings.cc
+++ b/libs/ardour/luabindings.cc
@@ -256,6 +256,7 @@ CLASSKEYS(std::vector<ARDOUR::Plugin::PresetRecord>);
 CLASSKEYS(std::vector<boost::shared_ptr<ARDOUR::Processor> >);
 CLASSKEYS(std::vector<boost::shared_ptr<ARDOUR::Source> >);
 CLASSKEYS(std::vector<boost::shared_ptr<ARDOUR::Readable> >);
+CLASSKEYS(std::vector<Evoral::Parameter>);
 CLASSKEYS(std::list<boost::shared_ptr<ARDOUR::PluginInfo> >); // PluginInfoList
 
 CLASSKEYS(std::list<ArdourMarker*>);
@@ -1410,7 +1411,7 @@ LuaBindings::common (lua_State* L)
 		.deriveWSPtrClass <Automatable, Evoral::ControlSet> ("Automatable")
 		.addCast<Slavable> ("to_slavable")
 		.addFunction ("automation_control", (boost::shared_ptr<AutomationControl>(Automatable::*)(const Evoral::Parameter&, bool))&Automatable::automation_control)
-		//.addFunction ("what_can_be_automated", &Automatable::what_can_be_automated)
+		.addFunction ("all_automatable_params", &Automatable::all_automatable_params)
 		.endClass ()
 
 		.deriveWSPtrClass <AutomatableSequence<Temporal::Beats>, Automatable> ("AutomatableSequence")
@@ -1852,6 +1853,9 @@ LuaBindings::common (lua_State* L)
 		.beginConstStdCPtrList <Location> ("LocationList")
 		.endClass ()
 
+		.beginConstStdVector <Evoral::Parameter> ("ParameterList")
+		.endClass ()
+
 		// std::list<boost::shared_ptr<AutomationControl> > ControlList
 		.beginStdList <boost::shared_ptr<AutomationControl> > ("ControlList")
 		.endClass ()