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authorDavid Robillard <d@drobilla.net>2006-06-10 01:02:08 +0000
committerDavid Robillard <d@drobilla.net>2006-06-10 01:02:08 +0000
commit6f78a755b0f8c59f85cdc02e9eeca8db860a2ed2 (patch)
treedbb7c668101a811e8b5e10f42f19991edb129674 /src/engine/events/Event.h
parentc2fbab4c27df8b9346bb68e30fddd7f94540dee1 (diff)
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Juggling things around...
git-svn-id: http://svn.drobilla.net/lad/grauph@13 a436a847-0d15-0410-975c-d299462d15a1
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+/* This file is part of Om. Copyright (C) 2006 Dave Robillard.
+ *
+ * Om 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.
+ *
+ * Om 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef EVENT_H
+#define EVENT_H
+
+#include <cassert>
+#include "util/CountedPtr.h"
+#include "util/types.h"
+#include "MaidObject.h"
+#include "Responder.h"
+
+namespace Om {
+
+
+
+/** Base class for all events (both realtime and QueuedEvent).
+ *
+ * This is for time-critical events like note ons. There is no non-realtime
+ * pre-execute method as in QueuedEvent's, any lookups etc need to be done in the
+ * realtime execute() method.
+ *
+ * QueuedEvent extends this class with a pre_process() method for any work that needs
+ * to be done before processing in the realtime audio thread.
+ *
+ * \ingroup engine
+ */
+class Event : public MaidObject
+{
+public:
+ virtual ~Event() {}
+
+ /** Execute event, MUST be realtime safe */
+ virtual void execute(samplecount offset) { assert(!m_executed); m_executed = true; }
+
+ /** Perform any actions after execution (ie send OSC response to client).
+ * No realtime requirement. */
+ virtual void post_process() {}
+
+ inline samplecount time_stamp() { return m_time_stamp; }
+
+protected:
+ Event(CountedPtr<Responder> responder);
+ Event();
+
+ // Prevent copies
+ Event(const Event&);
+ Event& operator=(const Event&);
+
+ CountedPtr<Responder> m_responder;
+ samplecount m_time_stamp;
+ bool m_executed;
+};
+
+
+} // namespace Om
+
+#endif // EVENT_H