2 files changed, 23 insertions, 2 deletions
diff --git a/libs/ardour/ardour/session_playlists.h b/libs/ardour/ardour/session_playlists.h
index 96321f2f9c..5f69ba8001 100644
--- a/libs/ardour/ardour/session_playlists.h
+++ b/libs/ardour/ardour/session_playlists.h
@@ -42,6 +42,7 @@ class Region;
 class Source;
 class Session;
 class Crossfade;
+class Track;
 
 class SessionPlaylists : public PBD::ScopedConnectionList
 {
@@ -53,11 +54,12 @@ public:
 	uint32_t source_use_count (boost::shared_ptr<const Source> src) const;
 	uint32_t region_use_count (boost::shared_ptr<Region> region) const;
 	template<class T> void foreach (T *obj, void (T::*func)(boost::shared_ptr<Playlist>));
-	void get (std::vector<boost::shared_ptr<Playlist> >&);
+	void get (std::vector<boost::shared_ptr<Playlist> >&) const;
 	void unassigned (std::list<boost::shared_ptr<Playlist> > & list);
 	void destroy_region (boost::shared_ptr<Region>);
 	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;
 
 private:
 	friend class Session;
diff --git a/libs/ardour/session_playlists.cc b/libs/ardour/session_playlists.cc
index a5772c23e3..1e31801271 100644
--- a/libs/ardour/session_playlists.cc
+++ b/libs/ardour/session_playlists.cc
@@ -27,6 +27,7 @@
 #include "ardour/playlist_factory.h"
 #include "ardour/session.h"
 #include "ardour/source.h"
+#include "ardour/track.h"
 #include "i18n.h"
 
 using namespace std;
@@ -219,7 +220,7 @@ SessionPlaylists::unassigned (std::list<boost::shared_ptr<Playlist> > & list)
 }
 
 void
-SessionPlaylists::get (vector<boost::shared_ptr<Playlist> >& s)
+SessionPlaylists::get (vector<boost::shared_ptr<Playlist> >& s) const
 {
 	Glib::Mutex::Lock lm (lock);
 
@@ -450,3 +451,21 @@ SessionPlaylists::region_use_count (boost::shared_ptr<Region> region) const
 
 	return cnt;
 }
+
+/** @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
+{
+	vector<boost::shared_ptr<Playlist> > pl;
+	get (pl);
+	
+	vector<boost::shared_ptr<Playlist> > pl_tr;
+
+	for (vector<boost::shared_ptr<Playlist> >::iterator i = pl.begin(); i != pl.end(); ++i) {
+		if (((*i)->get_orig_diskstream_id() == tr->diskstream_id()) || (tr->playlist()->id() == (*i)->id())) {
+			pl_tr.push_back (*i);
+		}
+	}
+
+	return pl_tr;
+}