1 files changed, 58 insertions, 0 deletions
diff --git a/src/lib/active_subtitles.h b/src/lib/active_subtitles.h
new file mode 100644
index 000000000..aa57c5b7a
--- /dev/null
+++ b/src/lib/active_subtitles.h
@@ -0,0 +1,58 @@
+/*
+    Copyright (C) 2017 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "dcpomatic_time.h"
+#include "player_subtitles.h"
+#include <boost/noncopyable.hpp>
+#include <list>
+#include <map>
+
+class Piece;
+
+class ActiveSubtitles : public boost::noncopyable
+{
+public:
+	std::list<PlayerSubtitles> get (DCPTime time, bool always_burn_subtitles) const;
+	void clear_before (DCPTime time);
+	void clear ();
+	void add_from (boost::weak_ptr<Piece> piece, PlayerSubtitles ps, DCPTime from);
+	std::pair<PlayerSubtitles, DCPTime> add_to (boost::weak_ptr<Piece> piece, DCPTime to);
+	bool have (boost::weak_ptr<Piece> piece) const;
+
+private:
+	class Period
+	{
+	public:
+		Period () {}
+
+		Period (PlayerSubtitles s, DCPTime f)
+			: subs (s)
+			, from (f)
+		{}
+
+		PlayerSubtitles subs;
+		DCPTime from;
+		boost::optional<DCPTime> to;
+	};
+
+	typedef std::map<boost::weak_ptr<Piece>, std::list<Period> > Map;
+
+	Map _data;
+};