1 files changed, 64 insertions, 0 deletions
diff --git a/src/engine/EventSink.hpp b/src/engine/EventSink.hpp
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+/* This file is part of Ingen.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Ingen 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.
+ * 
+ * Ingen 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 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef EVENTSINK_H
+#define EVENTSINK_H
+
+#include <list>
+#include <utility>
+#include <raul/RingBuffer.hpp>
+#include "events/SendPortValueEvent.hpp"
+#include "types.hpp"
+
+namespace Ingen {
+
+class PortImpl;
+class Engine;
+class SendPortValueEvent;
+
+
+/** Sink for events generated in the audio thread.
+ *
+ * Implemented as a flat ringbuffer of events, which are constructed directly
+ * in the ringbuffer rather than allocated on the heap (in order to make
+ * writing realtime safe).
+ *
+ * \ingroup engine
+ */
+class EventSink
+{
+public:
+	EventSink(Engine& engine, size_t capacity) : _engine(engine), _events(capacity) {}
+
+	/* FIXME: Figure out variable sized event queues and make this a generic
+	 * interface (ie don't add a method for every event type, crap..) */
+
+	bool write(uint32_t size, const Event* ev);
+
+	bool read(uint32_t event_buffer_size, uint8_t* event_buffer);
+
+private:
+	Engine& _engine;
+	Raul::RingBuffer<uchar> _events;
+};
+
+
+
+} // namespace Ingen
+
+#endif // EVENTSINK_H
+