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diff --git a/src/base/BasicQuantizer.h b/src/base/BasicQuantizer.h
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+// -*- c-basic-offset: 4 -*-
+
+/*
+    Rosegarden
+    A sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+
+    The moral right of the authors to claim authorship of this work
+    has been asserted.
+
+    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 BASIC_QUANTIZER_H
+#define BASIC_QUANTIZER_H
+
+#include "Quantizer.h"
+
+namespace Rosegarden {
+
+class BasicQuantizer : public Quantizer
+{
+public:
+    // The default unit is the shortest note type.  A unit of
+    // zero means do no quantization (rather pointlessly).
+    BasicQuantizer(timeT unit = -1, bool doDurations = false,
+                   int swingPercent = 0, int iteratePercent = 100);
+    BasicQuantizer(std::string source, std::string target,
+                   timeT unit = -1, bool doDurations = false,
+                   int swingPercent = 0, int iteratePercent = 100);
+    BasicQuantizer(const BasicQuantizer &);
+    virtual ~BasicQuantizer();
+
+    void setUnit(timeT unit) { m_unit = unit; }
+    timeT getUnit() const { return m_unit; }
+
+    void setDoDurations(bool doDurations) { m_durations = doDurations; }
+    bool getDoDurations() const { return m_durations; }
+
+    void setSwing(int percent) { m_swing = percent; }
+    int getSwing() const { return m_swing; }
+
+    void setIterative(int percent) { m_iterate = percent; }
+    int getIterative() const { return m_iterate; }
+    
+    /**
+     * Return the standard quantization units in descending order of
+     * unit duration
+     */
+    static std::vector<timeT> getStandardQuantizations();
+
+    /**
+     * Study the given segment; if all the events in it have times
+     * that match one or more of the standard quantizations, return
+     * the longest standard quantization unit to match.  Otherwise
+     * return 0.
+     */
+    static timeT getStandardQuantization(Segment *);
+
+    /**
+     * Study the given selection; if all the events in it have times
+     * that match one or more of the standard quantizations, return
+     * the longest standard quantization unit to match.  Otherwise
+     * return 0.
+     */
+    static timeT getStandardQuantization(EventSelection *);
+
+protected:
+    virtual void quantizeSingle(Segment *,
+                                Segment::iterator) const;
+
+private:
+    BasicQuantizer &operator=(const BasicQuantizer &); // not provided
+
+    timeT m_unit;
+    bool m_durations;
+    int m_swing;
+    int m_iterate;
+
+    static std::vector<timeT> m_standardQuantizations;
+    static void checkStandardQuantizations();
+    static timeT getUnitFor(Event *);
+};
+
+}
+
+#endif