More juggling

git-svn-id: http://svn.drobilla.net/lad/grauph@15 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 71 insertions, 0 deletions

diff --git a/src/libs/engine/Event.h b/src/libs/engine/Event.h
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+++ b/src/libs/engine/Event.h
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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