Initial butler work.

1 files changed, 45 insertions, 0 deletions

diff --git a/src/lib/video_ring_buffers.h b/src/lib/video_ring_buffers.h
new file mode 100644
index 000000000..f728247fe
--- /dev/null
+++ b/src/lib/video_ring_buffers.h
@@ -0,0 +1,45 @@
+/*
+    Copyright (C) 2016-2017 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_video.h"
+#include "types.h"
+#include <boost/noncopyable.hpp>
+#include <boost/thread/mutex.hpp>
+#include <boost/shared_ptr.hpp>
+#include <utility>
+
+class PlayerVideo;
+
+class VideoRingBuffers : public boost::noncopyable
+{
+public:
+	void put (boost::shared_ptr<PlayerVideo> frame, DCPTime time);
+	std::pair<boost::shared_ptr<PlayerVideo>, DCPTime> get ();
+
+	void clear ();
+	Frame size () const;
+
+	boost::optional<DCPTime> latest () const;
+
+private:
+	mutable boost::mutex _mutex;
+	std::list<std::pair<boost::shared_ptr<PlayerVideo>, DCPTime> > _data;
+};