root/trunk/libjdkmidi/trunk/include/jdkmidi/multitrack.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_MULTITRACK_H
#define JDKMIDI_MULTITRACK_H

#include "jdkmidi/track.h"

namespace jdkmidi
{

  class MIDIMultiTrack;
  class MIDIMultiTrackIteratorState;
  class MIDIMultiTrackIterator;
  
  class MIDIMultiTrack
  {
    public:
    
      MIDIMultiTrack ( int max_num_tracks_=64, bool deletable_=true );
      virtual ~MIDIMultiTrack();
      
      void SetTrack ( int trk, MIDITrack *t );
      MIDITrack *GetTrack ( int trk );
      const MIDITrack *GetTrack ( int trk ) const;
      int GetNumTracks() const
      {
        return num_tracks;
      }
      
      
      void Clear();
      
      int GetClksPerBeat() const
      {
        return clks_per_beat;
      }
      
      void SetClksPerBeat ( int c )
      {
        clks_per_beat = c;
      }
      
    protected:
    
      MIDITrack **tracks;
      const int num_tracks;
      bool deletable;
      
      int  clks_per_beat;
      
    private:

      const MIDIMultiTrack & operator = ( const MIDIMultiTrack & );
      MIDIMultiTrack ( const MIDIMultiTrack & );
  };
  
  class MIDIMultiTrackIteratorState
  {
    public:
    
      MIDIMultiTrackIteratorState ( int num_tracks_=64 );
      MIDIMultiTrackIteratorState ( const MIDIMultiTrackIteratorState &m );
      virtual ~MIDIMultiTrackIteratorState();
      
      const MIDIMultiTrackIteratorState & operator = ( const MIDIMultiTrackIteratorState &m );
      
      int GetNumTracks() const
      {
        return num_tracks;
      }
      int GetCurEventTrack() const
      {
        return cur_event_track;
      }
      MIDIClockTime GetCurrentTime() const
      {
        return cur_time;
      }
      
      void Reset();
      int FindTrackOfFirstEvent();
      
      MIDIClockTime cur_time;
      int cur_event_track;
      int num_tracks;
      int *next_event_number;
      MIDIClockTime *next_event_time;
  };
  
  class MIDIMultiTrackIterator
  {
    public:
    
      MIDIMultiTrackIterator ( MIDIMultiTrack *mlt );
      virtual ~MIDIMultiTrackIterator();
      
      
      void GoToTime ( MIDIClockTime time );
      
      bool GetCurEventTime ( MIDIClockTime *t ) const;
      bool GetCurEvent ( int *track, MIDITimedBigMessage **msg ) const;
      bool GoToNextEvent();
      
      bool GoToNextEventOnTrack ( int track );
      
      const MIDIMultiTrackIteratorState &GetState() const
      {
        return state;
      }
      
      MIDIMultiTrackIteratorState &GetState()
      {
        return state;
      }
      
      void SetState ( const MIDIMultiTrackIteratorState &s )
      {
        state = s;
      }
      
      MIDIMultiTrack * GetMultiTrack()
      {
        return multitrack;
      }
      const MIDIMultiTrack * GetMultiTrack() const
      {
        return multitrack;
      }
      
    protected:
    
      MIDIMultiTrack *multitrack;
      MIDIMultiTrackIteratorState state;
  };
  
}

#endif