furnace/src/engine/platform/fmshared_OPM.h
2024-01-16 21:26:57 -05:00

56 lines
1.8 KiB
C++

/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2024 tildearrow and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _FMSHARED_OPM_H
#define _FMSHARED_OPM_H
#include "fmsharedbase.h"
#define NOTE_LINEAR(x) (((x)<<7)+baseFreqOff+log2(parent->song.tuning/440.0)*12.0*128.0)
class DivPlatformOPM: public DivPlatformFMBase {
protected:
const unsigned short ADDR_MULT_DT=0x40;
const unsigned short ADDR_TL=0x60;
const unsigned short ADDR_RS_AR=0x80;
const unsigned short ADDR_AM_DR=0xa0;
const unsigned short ADDR_DT2_D2R=0xc0;
const unsigned short ADDR_SL_RR=0xe0;
const unsigned short ADDR_NOTE=0x28;
const unsigned short ADDR_KF=0x30;
const unsigned short ADDR_FMS_AMS=0x38;
const unsigned short ADDR_LR_FB_ALG=0x20;
const unsigned short opOffs[4]={
0x00, 0x08, 0x10, 0x18
};
unsigned char lfoValue, lfoValue2, lfoShape, lfoShape2;
bool brokenPitch;
DivPlatformOPM():
DivPlatformFMBase(),
lfoValue(0),
lfoValue2(0),
lfoShape(0),
lfoShape2(0),
brokenPitch(false) {}
};
#endif