From 1f7db603891281c8ce426d7e400a132420a4af5b Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Tue, 19 Mar 2019 05:27:17 +0100
Subject: [PATCH] Add convenience methods (mainly for scripting)

---
 libs/ardour/ardour/session_playlists.h |  2 ++
 libs/ardour/session_playlists.cc       | 28 ++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/libs/ardour/ardour/session_playlists.h b/libs/ardour/ardour/session_playlists.h
index 66f4f2c537..226680f6eb 100644
--- a/libs/ardour/ardour/session_playlists.h
+++ b/libs/ardour/ardour/session_playlists.h
@@ -61,6 +61,8 @@ public:
 	boost::shared_ptr<Crossfade> find_crossfade (const PBD::ID &);
 	void sync_all_regions_with_regions ();
 	std::vector<boost::shared_ptr<Playlist> > playlists_for_track (boost::shared_ptr<Track>) const;
+	std::vector<boost::shared_ptr<Playlist> > get_used () const;
+	std::vector<boost::shared_ptr<Playlist> > get_unused () const;
 	uint32_t n_playlists() const;
 
 private:
diff --git a/libs/ardour/session_playlists.cc b/libs/ardour/session_playlists.cc
index 2f66cd61b2..d0468b981e 100644
--- a/libs/ardour/session_playlists.cc
+++ b/libs/ardour/session_playlists.cc
@@ -521,6 +521,34 @@ SessionPlaylists::region_use_count (boost::shared_ptr<Region> region) const
 	return cnt;
 }
 
+vector<boost::shared_ptr<Playlist> >
+SessionPlaylists::get_used () const
+{
+	vector<boost::shared_ptr<Playlist> > pl;
+
+	Glib::Threads::Mutex::Lock lm (lock);
+
+	for (List::const_iterator i = playlists.begin(); i != playlists.end(); ++i) {
+		pl.push_back (*i);
+	}
+
+	return pl;
+}
+
+vector<boost::shared_ptr<Playlist> >
+SessionPlaylists::get_unused () const
+{
+	vector<boost::shared_ptr<Playlist> > pl;
+
+	Glib::Threads::Mutex::Lock lm (lock);
+
+	for (List::const_iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
+		pl.push_back (*i);
+	}
+
+	return pl;
+}
+
 /** @return list of Playlists that are associated with a track */
 vector<boost::shared_ptr<Playlist> >
 SessionPlaylists::playlists_for_track (boost::shared_ptr<Track> tr) const