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protrack.h

/*
 * Adplug - Replayer for many OPL2/OPL3 audio file formats.
 * Copyright (C) 1999 - 2002 Simon Peter, <dn.tlp@gmx.net>, et al.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * protrack.h - Generic Protracker Player by Simon Peter <dn.tlp@gmx.net>
 */

#ifndef H_PROTRACK
#define H_PROTRACK

#include "player.h"

class CmodPlayer: public CPlayer
{
public:
      CmodPlayer(Copl *newopl);
      virtual ~CmodPlayer();

      bool update();
      void rewind(int subsong);
      float getrefresh();

      unsigned int getpatterns()
      { return nop; };
      unsigned int getpattern()
      { return order[ord]; };
      unsigned int getorders()
      { return length; };
      unsigned int getorder()
      { return ord; };
      unsigned int getrow()
      { return rw; };
      unsigned int getspeed()
      { return speed; };

protected:
      enum Flags {Standard = 0, Decimal = 1, Faust = 2, NoKeyOn = 4};

      struct Instrument {
            unsigned char data[11],arpstart,arpspeed,arppos,arpspdcnt,misc;
            signed char slide;
      } *inst;

      struct Tracks {
            unsigned char note,command,inst,param2,param1;
      } **tracks;

      unsigned char *order, *arplist, *arpcmd, initspeed;
      unsigned short tempo, activechan, **trackord, bpm, flags, nop;
      unsigned long length, restartpos;

      struct Channel {
        unsigned short freq,nextfreq;
        unsigned char oct,vol1,vol2,inst,fx,info1,info2,key,nextoct,
          note,portainfo,vibinfo1,vibinfo2,arppos,arpspdcnt;
        signed char trigger;
      } *channel;

      void init_trackord();
      bool init_specialarp();
      void init_notetable(const unsigned short *newnotetable);
      bool realloc_order(unsigned long len);
      bool realloc_patterns(unsigned long pats, unsigned long rows, unsigned long chans);
      bool realloc_instruments(unsigned long len);

      void dealloc();

private:
      static const unsigned short sa2_notetable[12];
      static const unsigned char vibratotab[32];

      unsigned char speed, del, songend, regbd;
      unsigned short rows, notetable[12];
      unsigned long rw, ord, nrows, npats, nchans;

      void setvolume(unsigned char chan);
      void setvolume_alt(unsigned char chan);
      void setfreq(unsigned char chan);
      void playnote(unsigned char chan);
      void setnote(unsigned char chan, int note);
      void slide_down(unsigned char chan, int amount);
      void slide_up(unsigned char chan, int amount);
      void tone_portamento(unsigned char chan, unsigned char info);
      void vibrato(unsigned char chan, unsigned char speed, unsigned char depth);
      void vol_up(unsigned char chan, int amount);
      void vol_down(unsigned char chan, int amount);
      void vol_up_alt(unsigned char chan, int amount);
      void vol_down_alt(unsigned char chan, int amount);

      void dealloc_patterns();
};

#endif

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