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diff --git a/src/gui/studio/MidiMixerWindow.h b/src/gui/studio/MidiMixerWindow.h
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+
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio 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 rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+
+    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 _RG_MIDIMIXERWINDOW_H_
+#define _RG_MIDIMIXERWINDOW_H_
+
+#include "base/MidiProgram.h"
+#include "MixerWindow.h"
+#include <vector>
+
+
+class QWidget;
+class QTabWidget;
+class QString;
+class QFrame;
+
+
+namespace Rosegarden
+{
+
+class SequencerMapper;
+class Rotary;
+class RosegardenGUIDoc;
+class MidiMixerVUMeter;
+class MappedEvent;
+class Fader;
+
+
+class MidiMixerWindow : public MixerWindow
+{
+    Q_OBJECT
+
+public:
+    MidiMixerWindow(QWidget *parent, RosegardenGUIDoc *document);
+
+    /**
+     * Setup the tabs on the Mixer according to the Studio
+     */
+    void setupTabs();
+
+    /* 
+     * Update the VU meters
+     */
+    void updateMeters(SequencerMapper *mapper);
+    void updateMonitorMeter(SequencerMapper *mapper);
+
+public slots:
+    void slotSynchronise(); // synchronise with updated studio
+
+    void slotControllerDeviceEventReceived(MappedEvent *,
+                                           const void *);
+
+    void slotCurrentTabChanged(QWidget *);
+
+signals:
+    void play();
+    void stop();
+    void fastForwardPlayback();
+    void rewindPlayback();
+    void fastForwardPlaybackToEnd();
+    void rewindPlaybackToBeginning();
+    void record();
+    void panic();
+
+    // to be redirected to the instrument parameter box if necessary
+    void instrumentParametersChanged(InstrumentId);
+
+protected slots:
+    void slotUpdateInstrument(InstrumentId);
+
+    //void slotPanChanged(float);
+    void slotFaderLevelChanged(float);
+    void slotControllerChanged(float);
+
+protected:
+    void addTab(QWidget *tab, const QString &title);
+
+    virtual void sendControllerRefresh();
+
+    QTabWidget                        *m_tabWidget;
+
+    struct FaderStruct {
+
+        FaderStruct():m_id(0), m_vuMeter(0), m_volumeFader(0) {}
+
+        InstrumentId       m_id;
+        MidiMixerVUMeter              *m_vuMeter;
+        Fader               *m_volumeFader;
+        std::vector<std::pair<MidiByte, Rotary*> > m_controllerRotaries;
+
+    };
+
+    typedef std::vector<FaderStruct*>  FaderVector;
+    FaderVector                        m_faders;
+
+    QFrame                            *m_tabFrame;
+
+};
+
+
+}
+
+#endif