root/trunk/libjdkmidi/trunk/include/jdkmidi/sysex.h

/*
 *  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_SYSEX_H
#define JDKMIDI_SYSEX_H

#include "jdkmidi/midi.h"

namespace jdkmidi
{

  class  MIDISystemExclusive
  {
    public:
      MIDISystemExclusive ( int size=384 );
      
      MIDISystemExclusive ( const MIDISystemExclusive &e );
      
      
      MIDISystemExclusive (
        unsigned char *buf_,
        int max_len_,
        int cur_len_,
        bool deletable_
      )
      {
        buf=buf_;
        max_len=max_len_;
        cur_len=cur_len_;
        chk_sum=0;
        deletable=deletable_;
      }
      
      virtual ~MIDISystemExclusive();
      
      void Clear()
      {
        cur_len=0;
        chk_sum=0;
      }
      void ClearChecksum()
      {
        chk_sum=0;
      }
      
      void PutSysByte ( unsigned char b ) // does not add to chksum
      {
        if ( cur_len<max_len )
          buf[cur_len++]=b;
      }
      
      void PutByte ( unsigned char b )
      {
        PutSysByte ( b );
        chk_sum+=b;
      }
      
      void PutEXC()
      {
        PutSysByte ( SYSEX_START );
      }
      void PutEOX()
      {
        PutSysByte ( SYSEX_END );
      }
      
      // low nibble first
      void PutNibblizedByte ( unsigned char b )
      {
        PutByte ( ( unsigned char ) ( b&0xf ) );
        PutByte ( ( unsigned char ) ( b>>4 ) );
      }
      
      // high nibble first
      void PutNibblizedByte2 ( unsigned char b )
      {
        PutByte ( ( unsigned char ) ( b>>4 ) );
        PutByte ( ( unsigned char ) ( b&0xf ) );
      }
      
      void PutChecksum()
      {
        PutByte ( ( unsigned char ) ( chk_sum&0x7f ) );
      }
      
      unsigned char GetChecksum() const
      {
        return ( unsigned char ) ( chk_sum&0x7f );
      }
      
      int  GetLength() const
      {
        return cur_len;
      }
      
      unsigned char GetData ( int i ) const
      {
        return buf[i];
      }
      
      bool IsFull() const
      {
        return cur_len>=max_len;
      }
      
      unsigned char *GetBuf()
      {
        return buf;
      }
      
      const unsigned char *GetBuf() const
      {
        return buf;
      }
      
    private:
    
      unsigned char *buf;
      int max_len;
      int cur_len;
      unsigned char  chk_sum;
      bool deletable;
  };
}

#endif