Fix VST build.

[ardour.git] / libs / ardour / playlist.cc

diff --git a/libs/ardour/playlist.cc b/libs/ardour/playlist.cc
index e462bceb102e8d47cfb8e26ac4158aa790ac9da6..971ed8b2e836173a56b0c8d91d24aa23c1e15e6d 100644 (file)
--- a/libs/ardour/playlist.cc
+++ b/libs/ardour/playlist.cc
@@ -2981,3 +2981,27 @@ Playlist::remove_region_by_source (boost::shared_ptr<Source> s)
                i = j;
        }
 }
+
+/** Look from a session frame time and find the start time of the next region
+ *  which is on the top layer of this playlist.
+ *  @param t Time to look from.
+ *  @return Position of next top-layered region, or max_framepos if there isn't one.
+ */
+framepos_t
+Playlist::find_next_top_layer_position (framepos_t t) const
+{
+       RegionLock rlock (const_cast<Playlist *> (this));
+       
+       layer_t const top = top_layer ();
+
+       RegionList copy = regions.rlist ();
+       copy.sort (RegionSortByPosition ());
+
+       for (RegionList::const_iterator i = copy.begin(); i != copy.end(); ++i) {
+               if ((*i)->position() >= t && (*i)->layer() == top) {
+                       return (*i)->position();
+               }
+       }
+
+       return max_framepos;
+}