1 files changed, 72 insertions, 0 deletions
diff --git a/arts/midi/miditimercommon.cc b/arts/midi/miditimercommon.cc
new file mode 100644
index 00000000..205b72e5
--- /dev/null
+++ b/arts/midi/miditimercommon.cc
@@ -0,0 +1,72 @@
+    /*
+
+    Copyright (C) 2001 Stefan Westerfeld
+                       stefan@space.twc.de
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+  
+    This library 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
+    Library General Public License for more details.
+   
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+
+    */
+
+#include "artsmidi.h"
+#include "debug.h"
+#include "miditimercommon.h"
+#include "math.h"
+
+#undef DEBUG_JITTER
+
+using namespace std;
+using namespace Arts;
+
+MidiTimerCommon::MidiTimerCommon() :refCount(0)
+{
+	refCount = 0;
+}
+
+MidiTimerCommon::~MidiTimerCommon()
+{
+	arts_assert(refCount == 0);
+}
+
+void MidiTimerCommon::processQueue()
+{
+	TimeStamp now = time();
+
+	list<TSNote>::iterator n = noteQueue.begin();
+	while(n != noteQueue.end())
+	{
+		TSNote& note = *n;
+		TimeStamp& noteTime = note.event.time;
+
+		if( now.sec > noteTime.sec 
+		|| ((now.sec == noteTime.sec) && (now.usec > noteTime.usec)))
+		{
+#ifdef DEBUG_JITTER
+			float jitter = (now.sec-noteTime.sec) * 1000.0;
+			jitter += (float)(now.usec-noteTime.usec) / 1000.0;
+			arts_debug("midi jitter: %f",jitter);
+#endif
+
+			note.port.processCommand(note.event.command);
+			n = noteQueue.erase(n);
+		}
+		else n++;
+	}
+}
+
+void MidiTimerCommon::queueEvent(MidiPort port,const MidiEvent& event)
+{
+	noteQueue.push_back(TSNote(port, event));
+}