Work towards port monitoring and better (higher utilization) parallel execution.

git-svn-id: http://svn.drobilla.net/lad/ingen@784 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 80 insertions, 0 deletions

diff --git a/src/libs/engine/events/SendPortValueEvent.hpp b/src/libs/engine/events/SendPortValueEvent.hpp
new file mode 100644
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+++ b/src/libs/engine/events/SendPortValueEvent.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 SENDPORTVALUEEVENT_H
+#define SENDPORTVALUEEVENT_H
+
+#include <string>
+#include "Event.hpp"
+#include "types.hpp"
+using std::string;
+
+namespace Ingen {
+
+class Port;
+
+
+/** A special event used internally to send port values from the audio thread.
+ *
+ * This is created in the audio thread (using in-place new on a preallocated
+ * buffer) for processing in the post processing thread (unlike normal events
+ * which are created in the pre-processor thread then run through the audio
+ * thread).  This event's job is done entirely in post_process.
+ *
+ * This only works for control ports right now.  Variable size data is harder.
+ * Need some clever variable sized event RT allocation in flat buffer thingie..
+ *
+ * \ingroup engine
+ */
+class SendPortValueEvent : public Event
+{
+public:
+	SendPortValueEvent() {}
+
+	inline SendPortValueEvent(Engine&     engine,
+	                          SampleCount timestamp,
+	                          Port*       port,
+	                          bool        omni,
+	                          uint32_t    voice_num,
+	                          Sample      value)
+		: _port(port)
+		, _omni(omni)
+		, _voice_num(voice_num)
+		, _value(value)
+	{
+	}
+
+	inline void operator=(const SendPortValueEvent& ev) {
+		_port = ev._port;
+		_omni = ev._omni;
+		_voice_num = ev._voice_num;
+		_value = ev._value;
+	}
+	
+	void post_process();
+
+private:
+	Port*     _port;
+	bool      _omni;
+	uint32_t  _voice_num;
+	Sample    _value;
+};
+
+
+} // namespace Ingen
+
+#endif // SENDPORTVALUEEVENT_H