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/*
* Adplug - Replayer for many OPL2/OPL3 audio file formats.
* Copyright (C) 1999 - 2007 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
*
* a2m.h - A2M Loader by Simon Peter <dn.tlp@gmx.net>
*/
#ifndef H_ADPLUG_A2MLOADER
#define H_ADPLUG_A2MLOADER
#include "protrack.h"
class Ca2mLoader: public CmodPlayer
{
public:
static CPlayer *factory(Copl *newopl);
Ca2mLoader(Copl *newopl): CmodPlayer(newopl)
{ }
bool load(const std::string &filename, const CFileProvider &fp);
float getrefresh();
std::string gettype()
{ return std::string("AdLib Tracker 2"); }
std::string gettitle()
{ if(*songname) return std::string(songname,1,*songname); else return std::string(); }
std::string getauthor()
{ if(*author) return std::string(author,1,*author); else return std::string(); }
unsigned int getinstruments()
{ return 250; }
std::string getinstrument(unsigned int n)
{ return std::string(instname[n],1,*instname[n]); }
private:
#define ADPLUG_A2M_COPYRANGES 6
#define ADPLUG_A2M_FIRSTCODE 257
#define ADPLUG_A2M_MINCOPY 3
#define ADPLUG_A2M_MAXCOPY 255
#define ADPLUG_A2M_CODESPERRANGE (ADPLUG_A2M_MAXCOPY - ADPLUG_A2M_MINCOPY + 1)
#define ADPLUG_A2M_MAXCHAR (ADPLUG_A2M_FIRSTCODE + ADPLUG_A2M_COPYRANGES * ADPLUG_A2M_CODESPERRANGE - 1)
#define ADPLUG_A2M_TWICEMAX (2 * ADPLUG_A2M_MAXCHAR + 1)
static const unsigned int MAXFREQ, MINCOPY, MAXCOPY, COPYRANGES,
CODESPERRANGE, TERMINATE, FIRSTCODE, MAXCHAR, SUCCMAX, TWICEMAX, ROOT,
MAXBUF, MAXDISTANCE, MAXSIZE;
static const unsigned short bitvalue[14];
static const signed short copybits[ADPLUG_A2M_COPYRANGES],
copymin[ADPLUG_A2M_COPYRANGES];
void inittree();
void updatefreq(unsigned short a,unsigned short b);
void updatemodel(unsigned short code);
unsigned short inputcode(unsigned short bits);
unsigned short uncompress();
void decode();
unsigned short sixdepak(unsigned short *source,unsigned char *dest,unsigned short size);
char songname[43], author[43], instname[250][33];
unsigned short ibitcount, ibitbuffer, ibufcount, obufcount, input_size,
output_size, leftc[ADPLUG_A2M_MAXCHAR+1], rghtc[ADPLUG_A2M_MAXCHAR+1],
dad[ADPLUG_A2M_TWICEMAX+1], freq[ADPLUG_A2M_TWICEMAX+1], *wdbuf;
unsigned char *obuf, *buf;
};
#endif
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