sequencer.h

一个很好的c++ midi解码算法,不依赖于任何平台.

/*
 *  sequencer.h
 *  Copyright (C) 1998,1999 SAKAI Katsuya
 *
 *  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
 */

#ifndef __SEQUENCER_H_
#define __SEQUENCER_H_

#include <stdio.h> // #include <iostream.h>
#include <sys/types.h>
#include "config.h"

class Sequencer {
public:
  Sequencer(){ _seqbuf=NULL; flagOpen=0; numberOfDevice=0; seqstart=0;}

  virtual int open(char *, int);
  virtual int close();
  virtual int checkMidiDevice();
  virtual int NumOfDevice();
  virtual void AllNoteOff(u_char dev);

  virtual void reset();
  virtual void sync();
  virtual int getCtrlRate();

  virtual void startTimer();
  virtual void stopTimer();
  virtual void waitTime(u_long);
  virtual void MidiOut(u_char, char);
  void seqbuf_dump();
  void seqbuf_clear();

  virtual void midiEvent1(u_char port, u_char ev, u_char para1);
  virtual void midiEvent2(u_char port, u_char ev, u_char para1, u_char para2);
  virtual void send_exclusive(u_char port, u_char *ex, int len);
  virtual void metaEvent(u_char type, int len, char *data);

#ifdef RUNNING_ST
  virtual void clearStatus(u_char dev);
#endif

  void set_timebase(int);
  virtual void set_tempo(u_long);
  u_long show_tempo();
  int show_timebase();

protected:
  virtual void seq_midiout(u_char dev, u_char dat);
  virtual void seq_waittime(u_long);

  u_long tempo; // timebase/min
  int timebase;
  u_long ctrlrate;
  double CurrentTime;
  u_long LastTick;
  int seqfd;
  int numberOfDevice;
  u_char seqstart;
  u_char flagOpen;
  u_char *_seqbuf;
  int _seqbuflen;
  int _seqbufptr;
#ifdef RUNNING_ST
  u_char LastStatus[16];
#endif
  u_char LastOutputPort;
  virtual void changePort(u_char , u_char);  // serial connection
};

#endif