jdkmidi class library documentation
Copyright © 2004 J.D. Koftinoff Software, Ltd.
Released under the GNU General Public License (GPL)

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include/jdkmidi/keysig.h

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/*
 *  libjdkmidi-2004 C++ Class Library for MIDI
 *
 *  Copyright (C) 2004  J.D. Koftinoff Software, Ltd.
 *  www.jdkoftinoff.com
 *  jeffk@jdkoftinoff.com
 *
 *  *** RELEASED UNDER THE GNU GENERAL PUBLIC LICENSE (GPL) April 27, 2004 ***
 *
 *  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.
 *
 *  This program 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 more 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
/*
**  Copyright 1986 to 1998 By J.D. Koftinoff Software, Ltd.
**
**  All rights reserved.
**
**  No one may duplicate this source code in any form for any reason
**  without the written permission given by J.D. Koftinoff Software, Ltd.
**
*/

#ifndef _JDKMIDI_KEYSIG_H
#define _JDKMIDI_KEYSIG_H

#include "jdkmidi/midi.h"

namespace jdkmidi
{
  enum MIDIAccidentalType
    {
      ACCFlat=0,
      ACCNatural,
      ACCSharp  
    };
  
  class MIDIKeySignature
    {
    public:
      
      MIDIKeySignature();
      MIDIKeySignature( const MIDIKeySignature &k );
      
      void  Reset();
      
      
      bool  IsMajor()     { return major;   }
      
      void  SetSharpFlats( int sf, bool maj=true )
        { sharp_flat=sf; major=maj; Reset();  }
      
      int GetSharpFlats()     { return sharp_flat;  }
      
      MIDIAccidentalType  GetNoteStatus( int white_note )
        { return state[white_note%7];   }
      
      
      bool  ConvertMIDINote( int in_note, int *out_note );
      
    protected:
      
      bool  ProcessWhiteNote( int in_note, int *out_note );
      bool  ProcessBlackNote( int in_note, int *out_note );
      
      MIDIAccidentalType  state[7];
      bool    use_sharps;
      int   sharp_flat;
      bool    major;
      
      static  int sharp_list[7];
      static  int flat_list[7];
      
      
    };
}

#endif