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diff --git a/libs/evoral/evoral/EventSink.h b/libs/evoral/evoral/EventSink.h
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+++ b/libs/evoral/evoral/EventSink.h
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+/*
+ * Copyright (C) 2008-2011 David Robillard <d@drobilla.net>
+ * Copyright (C) 2008-2013 Paul Davis <paul@linuxaudiosystems.com>
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef EVORAL_EVENT_SINK_HPP
+#define EVORAL_EVENT_SINK_HPP
+
+#include "evoral/visibility.h"
+#include "evoral/types.h"
+
+namespace Evoral {
+
+/** Pure virtual base for anything you can write events to.
+ */
+template<typename Time>
+class /*LIBEVORAL_API*/ EventSink {
+public:
+	virtual ~EventSink() {}
+	virtual uint32_t write(Time time, EventType type, uint32_t size, const uint8_t* buf) = 0;
+};
+
+
+} // namespace Evoral
+
+#endif // EVORAL_EVENT_SINK_HPP
+