comparison base/FrameTimer.h @ 567:e6d35670e1df

* Somewhat better MIDI-based time instant timing

+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2009 QMUL.
+    
+    This program 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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _FRAME_TIMER_H_
+#define _FRAME_TIMER_H_
+
+/**
+ * A trivial interface for things that permit retrieving "the current
+ * frame".  Implementations of this interface are used, for example,
+ * for timestamping incoming MIDI events when tapping to MIDI.
+ */
+
+class FrameTimer
+{
+public:
+    virtual unsigned long getFrame() const = 0;
+};
+
+#endif