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/*
* Adplug - Replayer for many OPL2/OPL3 audio file formats.
* Copyright (C) 1999 - 2006 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
*
* analopl.cpp - Spectrum analyzing hardware OPL, by Simon Peter <dn.tlp@gmx.net>
*/
#include "analopl.h"
CAnalopl::CAnalopl(unsigned short initport)
: CRealopl(initport)
{
for(int i = 0; i < 9; i++) {
keyregs[0][i][0] = 0;
keyregs[0][i][1] = 0;
keyregs[1][i][0] = 0;
keyregs[1][i][1] = 0;
}
}
void CAnalopl::write(int reg, int val)
{
if(nowrite) return;
if(reg >= 0xb0 && reg <= 0xb8) {
if(!keyregs[currChip][reg - 0xb0][0] && (val & 32))
keyregs[currChip][reg - 0xb0][1] = 1;
else
keyregs[currChip][reg - 0xb0][1] = 0;
keyregs[currChip][reg - 0xb0][0] = val & 32;
}
CRealopl::write(reg, val);
}
int CAnalopl::getcarriervol(unsigned int v, unsigned int c)
{
return (hardvols[c][op_table[v]+3][0] & 63);
}
int CAnalopl::getmodulatorvol(unsigned int v, unsigned int c)
{
return (hardvols[c][op_table[v]][0] & 63);
}
bool CAnalopl::getkeyon(unsigned int v, unsigned int c)
{
if(keyregs[c][v][1]) {
keyregs[c][v][1] = 0;
return true;
} else
return false;
}