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instrument.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001-2004 The ScummVM project
 *
 * 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.
 *
 * $Header: /cvsroot/scummvm/scummvm/scumm/instrument.h,v 2.12 2004/01/06 12:45:30 fingolfin Exp $
 */

#ifndef INSTRUMENT_H
#define INSTRUMENT_H

#include "stdafx.h"
#include "common/scummsys.h"

class MidiChannel;

namespace Scumm {

class Serializer;
class Instrument;

class InstrumentInternal {
public:
      virtual void saveOrLoad (Serializer *s) = 0;
      virtual void send (MidiChannel *mc) = 0;
      virtual void copy_to (Instrument *dest) = 0;
      virtual bool is_valid() = 0;
      virtual operator int() { return 255; }
};

class Instrument {
private:
      byte _type;
      InstrumentInternal *_instrument;

public:
      enum {
            itNone = 0,
            itProgram = 1,
            itAdlib = 2,
            itRoland = 3
      };

      Instrument() : _type (0), _instrument (0) { }
      ~Instrument() { delete _instrument; }
      static void nativeMT32 (bool native);

      void clear();
      void copy_to (Instrument *dest) { if (_instrument) _instrument->copy_to (dest); else dest->clear(); }
      operator int() { return (_instrument ? (int) _instrument : 255); }
      void program (byte program, bool mt32);
      void adlib (byte *instrument);
      void roland (byte *instrument);

      byte getType() { return _type; }
      bool isValid() { return (_instrument ? _instrument->is_valid() : false); }
      void saveOrLoad (Serializer *s);
      void send (MidiChannel *mc) { if (_instrument) _instrument->send (mc); }
};

} // End of namespace Scumm

#endif

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