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/*
* Adplug - Replayer for many OPL2/OPL3 audio file formats.
* Copyright (C) 1999 - 2004 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
*
* mkj.cpp - MKJamz Player, by Simon Peter <dn.tlp@gmx.net>
*/
#include <string.h>
#include <assert.h>
#include "mkj.h"
#include "debug.h"
CPlayer *CmkjPlayer::factory(Copl *newopl)
{
return new CmkjPlayer(newopl);
}
bool CmkjPlayer::load(const char *filename, const CFileProvider &fp)
{
binistream *f = fp.open(filename); if(!f) return false;
char id[6];
float ver;
int i, j;
short inst[8];
// file validation
f->readString(id, 6);
if(strncmp(id,"MKJamz",6)) { fp.close(f); return false; }
ver = f->readFloat(binio::Single);
if(ver > 1.12) { fp.close(f); return false; }
// load
maxchannel = f->readInt(2);
opl->init(); opl->write(1, 32);
for(i = 0; i < maxchannel; i++) {
for(j = 0; j < 8; j++) inst[j] = f->readInt(2);
opl->write(0x20+op_table[i],inst[4]);
opl->write(0x23+op_table[i],inst[0]);
opl->write(0x40+op_table[i],inst[5]);
opl->write(0x43+op_table[i],inst[1]);
opl->write(0x60+op_table[i],inst[6]);
opl->write(0x63+op_table[i],inst[2]);
opl->write(0x80+op_table[i],inst[7]);
opl->write(0x83+op_table[i],inst[3]);
}
maxnotes = f->readInt(2);
songbuf = new short [(maxchannel+1)*maxnotes];
for(i = 0; i < maxchannel; i++) channel[i].defined = f->readInt(2);
for(i = 0; i < (maxchannel + 1) * maxnotes; i++)
songbuf[i] = f->readInt(2);
AdPlug_LogWrite("CmkjPlayer::load(\"%s\"): loaded file ver %.2f, %d channels,"
" %d notes/channel.\n", filename, ver, maxchannel,
maxnotes);
fp.close(f);
rewind(0);
return true;
}
bool CmkjPlayer::update()
{
int c, i;
short note;
for(c = 0; c < maxchannel; c++) {
if(!channel[c].defined) // skip if channel is disabled
continue;
if(channel[c].pstat) {
channel[c].pstat--;
continue;
}
opl->write(0xb0 + c, 0); // key off
do {
assert(channel[c].songptr < (maxchannel + 1) * maxnotes);
note = songbuf[channel[c].songptr];
if(channel[c].songptr - c > maxchannel)
if(note && note < 250)
channel[c].pstat = channel[c].speed;
switch(note) {
// normal notes
case 68: opl->write(0xa0 + c,0x81); opl->write(0xb0 + c,0x21 + 4 * channel[c].octave); break;
case 69: opl->write(0xa0 + c,0xb0); opl->write(0xb0 + c,0x21 + 4 * channel[c].octave); break;
case 70: opl->write(0xa0 + c,0xca); opl->write(0xb0 + c,0x21 + 4 * channel[c].octave); break;
case 71: opl->write(0xa0 + c,0x2); opl->write(0xb0 + c,0x22 + 4 * channel[c].octave); break;
case 65: opl->write(0xa0 + c,0x41); opl->write(0xb0 + c,0x22 + 4 * channel[c].octave); break;
case 66: opl->write(0xa0 + c,0x87); opl->write(0xb0 + c,0x22 + 4 * channel[c].octave); break;
case 67: opl->write(0xa0 + c,0xae); opl->write(0xb0 + c,0x22 + 4 * channel[c].octave); break;
case 17: opl->write(0xa0 + c,0x6b); opl->write(0xb0 + c,0x21 + 4 * channel[c].octave); break;
case 18: opl->write(0xa0 + c,0x98); opl->write(0xb0 + c,0x21 + 4 * channel[c].octave); break;
case 20: opl->write(0xa0 + c,0xe5); opl->write(0xb0 + c,0x21 + 4 * channel[c].octave); break;
case 21: opl->write(0xa0 + c,0x20); opl->write(0xb0 + c,0x22 + 4 * channel[c].octave); break;
case 15: opl->write(0xa0 + c,0x63); opl->write(0xb0 + c,0x22 + 4 * channel[c].octave); break;
case 255: // delay
channel[c].songptr += maxchannel;
channel[c].pstat = songbuf[channel[c].songptr];
break;
case 254: // set octave
channel[c].songptr += maxchannel;
channel[c].octave = songbuf[channel[c].songptr];
break;
case 253: // set speed
channel[c].songptr += maxchannel;
channel[c].speed = songbuf[channel[c].songptr];
break;
case 252: // set waveform
channel[c].songptr += maxchannel;
channel[c].waveform = songbuf[channel[c].songptr] - 300;
if(c > 2)
opl->write(0xe0 + c + (c+6),channel[c].waveform);
else
opl->write(0xe0 + c,channel[c].waveform);
break;
case 251: // song end
for(i = 0; i < maxchannel; i++) channel[i].songptr = i;
songend = true;
return false;
}
if(channel[c].songptr - c < maxnotes)
channel[c].songptr += maxchannel;
else
channel[c].songptr = c;
} while(!channel[c].pstat);
}
return !songend;
}
void CmkjPlayer::rewind(int subsong)
{
int i;
for(i = 0; i < maxchannel; i++) {
channel[i].pstat = 0;
channel[i].speed = 0;
channel[i].waveform = 0;
channel[i].songptr = i;
channel[i].octave = 4;
}
songend = false;
}
float CmkjPlayer::getrefresh()
{
return 100.0f;
}
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