musix 0.3.5

Music player library for esoteric audio formats (music from C64,Amiga etc)
Documentation 
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/*
 * Adplug - Replayer for many OPL2/OPL3 audio file formats.
 * Copyright (C) 1999 - 2008 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * mid.h - LAA, SCI, MID & CMF Player by Philip Hassey <philhassey@hotmail.com>
 */

#include "player.h"

class CmidPlayer: public CPlayer
{
public:
  static CPlayer *factory(Copl *newopl);

  CmidPlayer(Copl *newopl);
  ~CmidPlayer()
    { if(data) delete [] data; }

  bool load(const std::string &filename, const CFileProvider &fp);
  bool update();
  void rewind(int subsong);
  float getrefresh();

  std::string gettype();
  std::string gettitle()
    { return std::string(title); }
  std::string getauthor()
    { return std::string(author); }
  std::string getdesc()
    { return std::string(remarks); }
  unsigned int getinstruments()
    { return tins; }
  unsigned int getsubsongs()
    { return subsongs; }

 protected:
  static const unsigned char adlib_opadd[];
  static const int ops[], map_chan[], fnums[], percussion_map[];

  struct midi_channel {
    int inum;
    unsigned char ins[11];
    int vol;
    int nshift;
    int on;
  };

  struct midi_track {
    unsigned long tend;
    unsigned long spos;
    unsigned long pos;
    unsigned long iwait;
    int on;
    unsigned char pv;
  };

  char *author,*title,*remarks,emptystr;
  long flen;
  unsigned long pos;
  unsigned long sierra_pos; //sierras gotta be special.. :>
  int subsongs;
  unsigned char *data;

  unsigned char adlib_data[256];
  int adlib_style;
  int adlib_mode;
  unsigned char myinsbank[128][16], smyinsbank[128][16];
  midi_channel ch[16];
  int chp[18][3];

  long deltas;
  long msqtr;

  midi_track track[16];
  unsigned int curtrack;

  float fwait;
  unsigned long iwait;
  int doing;

  int type,tins,stins;

 private:
  bool load_sierra_ins(const std::string &fname, const CFileProvider &fp);
  void midiprintf(const char *format, ...);
  unsigned char datalook(long pos);
  unsigned long getnexti(unsigned long num);
  unsigned long getnext(unsigned long num);
  unsigned long getval();
  void sierra_next_section();
  void midi_write_adlib(unsigned int r, unsigned char v);
  void midi_fm_instrument(int voice, unsigned char *inst);
  void midi_fm_percussion(int ch, unsigned char *inst);
  void midi_fm_volume(int voice, int volume);
  void midi_fm_playnote(int voice, int note, int volume);
  void midi_fm_endnote(int voice);
  void midi_fm_reset();
};