552 lines
18 KiB
C++
552 lines
18 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2022 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "ym2610ext.h"
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#include <math.h>
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int DivPlatformYM2610Ext::dispatch(DivCommand c) {
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if (c.chan<extChanOffs) {
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return DivPlatformYM2610::dispatch(c);
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}
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if (c.chan>(extChanOffs+3)) {
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c.chan-=3;
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return DivPlatformYM2610::dispatch(c);
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}
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int ch=c.chan-extChanOffs;
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int ordch=orderedOps[ch];
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if (!extMode) {
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c.chan=extChanOffs;
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return DivPlatformYM2610::dispatch(c);
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}
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switch (c.cmd) {
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case DIV_CMD_NOTE_ON: {
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DivInstrument* ins=parent->getIns(opChan[ch].ins,DIV_INS_FM);
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[ordch];
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DivInstrumentFM::Operator op=ins->fm.op[ordch];
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// TODO: how does this work?!
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if (isOpMuted[ch]) {
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rWrite(baseAddr+0x40,127);
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} else {
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if (opChan[ch].insChanged) {
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rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[ch].vol&0x7f,127));
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}
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}
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if (opChan[ch].insChanged) {
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rWrite(baseAddr+0x30,(op.mult&15)|(dtTable[op.dt&7]<<4));
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rWrite(baseAddr+0x50,(op.ar&31)|(op.rs<<6));
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rWrite(baseAddr+0x60,(op.dr&31)|(op.am<<7));
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rWrite(baseAddr+0x70,op.d2r&31);
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rWrite(baseAddr+0x80,(op.rr&15)|(op.sl<<4));
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rWrite(baseAddr+0x90,op.ssgEnv&15);
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opChan[ch].mask=op.enable;
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}
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if (opChan[ch].insChanged) { // TODO how does this work?
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rWrite(chanOffs[extChanOffs]+0xb0,(ins->fm.alg&7)|(ins->fm.fb<<3));
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rWrite(chanOffs[extChanOffs]+0xb4,(opChan[ch].pan<<6)|(ins->fm.fms&7)|((ins->fm.ams&3)<<4));
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}
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opChan[ch].insChanged=false;
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if (c.value!=DIV_NOTE_NULL) {
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opChan[ch].baseFreq=NOTE_FNUM_BLOCK(c.value,11);
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opChan[ch].portaPause=false;
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opChan[ch].freqChanged=true;
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}
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opChan[ch].keyOn=true;
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opChan[ch].active=true;
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break;
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}
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case DIV_CMD_NOTE_OFF:
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opChan[ch].keyOff=true;
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opChan[ch].keyOn=false;
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opChan[ch].active=false;
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break;
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case DIV_CMD_VOLUME: {
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opChan[ch].vol=c.value;
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DivInstrument* ins=parent->getIns(opChan[ch].ins,DIV_INS_FM);
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[ordch];
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DivInstrumentFM::Operator op=ins->fm.op[ordch];
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if (isOpMuted[ch]) {
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rWrite(baseAddr+0x40,127);
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} else {
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rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[ch].vol&0x7f,127));
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}
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break;
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}
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case DIV_CMD_GET_VOLUME: {
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return opChan[ch].vol;
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break;
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}
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case DIV_CMD_INSTRUMENT:
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if (opChan[ch].ins!=c.value || c.value2==1) {
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opChan[ch].insChanged=true;
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}
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opChan[ch].ins=c.value;
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break;
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case DIV_CMD_PANNING: {
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if (c.value==0 && c.value2==0) {
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opChan[ch].pan=3;
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} else {
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opChan[ch].pan=(c.value2>0)|((c.value>0)<<1);
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}
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DivInstrument* ins=parent->getIns(opChan[ch].ins,DIV_INS_FM);
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if (parent->song.sharedExtStat) {
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for (int i=0; i<4; i++) {
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if (ch==i) continue;
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opChan[i].pan=opChan[ch].pan;
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}
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}
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rWrite(chanOffs[extChanOffs]+0xb4,(opChan[ch].pan<<6)|(ins->fm.fms&7)|((ins->fm.ams&3)<<4));
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break;
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}
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case DIV_CMD_PITCH: {
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opChan[ch].pitch=c.value;
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opChan[ch].freqChanged=true;
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break;
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}
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case DIV_CMD_NOTE_PORTA: {
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if (parent->song.linearPitch==2) {
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int destFreq=NOTE_FREQUENCY(c.value2);
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bool return2=false;
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if (destFreq>opChan[ch].baseFreq) {
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opChan[ch].baseFreq+=c.value;
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if (opChan[ch].baseFreq>=destFreq) {
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opChan[ch].baseFreq=destFreq;
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return2=true;
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}
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} else {
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opChan[ch].baseFreq-=c.value;
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if (opChan[ch].baseFreq<=destFreq) {
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opChan[ch].baseFreq=destFreq;
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return2=true;
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}
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}
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opChan[ch].freqChanged=true;
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if (return2) {
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//opChan[ch].inPorta=false;
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return 2;
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}
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break;
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}
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PLEASE_HELP_ME(opChan[ch]);
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break;
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}
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case DIV_CMD_LEGATO: {
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opChan[ch].baseFreq=NOTE_FNUM_BLOCK(c.value,11);
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opChan[ch].freqChanged=true;
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break;
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}
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case DIV_CMD_FM_EXTCH: {
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extMode=c.value;
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immWrite(0x27,extMode?0x40:0);
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break;
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}
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case DIV_CMD_FM_LFO: {
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rWrite(0x22,(c.value&7)|((c.value>>4)<<3));
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break;
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}
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case DIV_CMD_FM_FB: {
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chan[extChanOffs].state.fb=c.value&7;
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rWrite(chanOffs[extChanOffs]+ADDR_FB_ALG,(chan[extChanOffs].state.alg&7)|(chan[extChanOffs].state.fb<<3));
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break;
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}
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case DIV_CMD_FM_MULT: { // TODO
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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DivInstrument* ins=parent->getIns(opChan[ch].ins,DIV_INS_FM);
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DivInstrumentFM::Operator op=ins->fm.op[orderedOps[c.value]];
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rWrite(baseAddr+0x30,(c.value2&15)|(dtTable[op.dt&7]<<4));
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break;
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}
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case DIV_CMD_FM_TL: { // TODO
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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DivInstrument* ins=parent->getIns(opChan[ch].ins,DIV_INS_FM);
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if (isOutput[ins->fm.alg][c.value]) {
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rWrite(baseAddr+0x40,127-(((127-c.value2)*(opChan[ch].vol&0x7f))/127));
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} else {
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rWrite(baseAddr+0x40,c.value2);
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}
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break;
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}
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case DIV_CMD_FM_AR: {
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if (c.value<0) {
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for (int i=0; i<4; i++) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
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op.ar=c.value2&31;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
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rWrite(baseAddr+0x50,(op.ar&31)|(op.rs<<6));
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}
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} else {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[orderedOps[c.value]];
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op.ar=c.value2&31;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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rWrite(baseAddr+0x50,(op.ar&31)|(op.rs<<6));
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}
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break;
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}
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case DIV_CMD_FM_RS: {
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if (c.value<0) {
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for (int i=0; i<4; i++) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
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op.rs=c.value2&3;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
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rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
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}
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} else if (c.value<4) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[orderedOps[c.value]];
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op.rs=c.value2&3;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
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}
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break;
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}
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case DIV_CMD_FM_AM: {
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if (c.value<0) {
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for (int i=0; i<4; i++) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
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op.am=c.value2&1;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
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rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
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}
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} else if (c.value<4) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[orderedOps[c.value]];
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op.am=c.value2&1;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
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}
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break;
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}
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case DIV_CMD_FM_DR: {
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if (c.value<0) {
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for (int i=0; i<4; i++) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
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op.dr=c.value2&31;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
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rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
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}
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} else if (c.value<4) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[orderedOps[c.value]];
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op.dr=c.value2&31;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
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}
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break;
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}
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case DIV_CMD_FM_SL: {
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if (c.value<0) {
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for (int i=0; i<4; i++) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
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op.sl=c.value2&15;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
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rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
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}
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} else if (c.value<4) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[orderedOps[c.value]];
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op.sl=c.value2&15;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
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}
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break;
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}
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case DIV_CMD_FM_RR: {
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if (c.value<0) {
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for (int i=0; i<4; i++) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
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op.rr=c.value2&15;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
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rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
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}
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} else if (c.value<4) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[orderedOps[c.value]];
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op.rr=c.value2&15;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
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}
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break;
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}
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case DIV_CMD_FM_D2R: {
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if (c.value<0) {
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for (int i=0; i<4; i++) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
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op.d2r=c.value2&31;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
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rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
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}
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} else if (c.value<4) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[orderedOps[c.value]];
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op.d2r=c.value2&31;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
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}
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break;
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}
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case DIV_CMD_FM_DT: {
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if (c.value<0) {
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for (int i=0; i<4; i++) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
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op.dt=c.value&7;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
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rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
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}
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} else if (c.value<4) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[orderedOps[c.value]];
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op.dt=c.value2&7;
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
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}
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break;
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}
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case DIV_CMD_FM_SSG: {
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if (c.value<0) {
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for (int i=0; i<4; i++) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
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op.ssgEnv=8^(c.value2&15);
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
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rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
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}
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} else if (c.value<4) {
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DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[orderedOps[c.value]];
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op.ssgEnv=8^(c.value2&15);
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[orderedOps[c.value]];
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rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
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}
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break;
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}
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case DIV_CMD_GET_VOLMAX:
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return 127;
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break;
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case DIV_ALWAYS_SET_VOLUME:
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return 0;
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break;
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case DIV_CMD_PRE_PORTA:
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break;
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default:
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//printf("WARNING: unimplemented command %d\n",c.cmd);
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break;
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}
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return 1;
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}
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static int opChanOffsL[4]={
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0xa9, 0xaa, 0xa8, 0xa2
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};
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static int opChanOffsH[4]={
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0xad, 0xae, 0xac, 0xa6
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};
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void DivPlatformYM2610Ext::tick(bool sysTick) {
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if (extMode) {
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bool writeSomething=false;
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unsigned char writeMask=2;
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for (int i=0; i<4; i++) {
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writeMask|=(unsigned char)(opChan[i].mask && opChan[i].active)<<(4+i);
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if (opChan[i].keyOn || opChan[i].keyOff) {
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writeSomething=true;
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writeMask&=~(1<<(4+i));
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opChan[i].keyOff=false;
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}
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}
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if (writeSomething) {
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immWrite(0x28,writeMask);
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}
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}
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DivPlatformYM2610::tick(sysTick);
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bool writeNoteOn=false;
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unsigned char writeMask=2;
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if (extMode) for (int i=0; i<4; i++) {
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if (opChan[i].freqChanged) {
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if (parent->song.linearPitch==2) {
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opChan[i].freq=parent->calcFreq(opChan[i].baseFreq,opChan[i].pitch,false,4,opChan[i].pitch2,chipClock,CHIP_FREQBASE,11);
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} else {
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int fNum=parent->calcFreq(opChan[i].baseFreq&0x7ff,opChan[i].pitch,false,4,opChan[i].pitch2);
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int block=(opChan[i].baseFreq&0xf800)>>11;
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if (fNum<0) fNum=0;
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if (fNum>2047) {
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while (block<7) {
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fNum>>=1;
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block++;
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}
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if (fNum>2047) fNum=2047;
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}
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opChan[i].freq=(block<<11)|fNum;
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}
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if (opChan[i].freq>0x3fff) opChan[i].freq=0x3fff;
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immWrite(opChanOffsH[i],opChan[i].freq>>8);
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immWrite(opChanOffsL[i],opChan[i].freq&0xff);
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}
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writeMask|=(unsigned char)(opChan[i].mask && opChan[i].active)<<(4+i);
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if (opChan[i].keyOn) {
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writeNoteOn=true;
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if (opChan[i].mask) {
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writeMask|=1<<(4+i);
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}
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opChan[i].keyOn=false;
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}
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}
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if (writeNoteOn) {
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immWrite(0x28,writeMask);
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}
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}
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void DivPlatformYM2610Ext::muteChannel(int ch, bool mute) {
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if (ch<extChanOffs) {
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DivPlatformYM2610::muteChannel(ch,mute);
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return;
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}
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if (ch>(extChanOffs+3)) {
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DivPlatformYM2610::muteChannel(ch-3,mute);
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return;
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}
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isOpMuted[ch-extChanOffs]=mute;
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int ordch=orderedOps[ch-extChanOffs];
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DivInstrument* ins=parent->getIns(opChan[ch].ins,DIV_INS_FM);
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unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[ordch];
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DivInstrumentFM::Operator op=ins->fm.op[ordch];
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if (isOpMuted[ch]) {
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rWrite(baseAddr+0x40,127);
|
|
} else if (isOutput[ins->fm.alg][ordch]) {
|
|
rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[ch-extChanOffs].vol&0x7f,127));
|
|
} else {
|
|
rWrite(baseAddr+0x40,op.tl);
|
|
}
|
|
}
|
|
|
|
void DivPlatformYM2610Ext::forceIns() {
|
|
for (int i=0; i<psgChanOffs; i++) {
|
|
for (int j=0; j<4; j++) {
|
|
unsigned short baseAddr=chanOffs[i]|opOffs[j];
|
|
DivInstrumentFM::Operator& op=chan[i].state.op[j];
|
|
if (i==1 && extMode) { // extended channel
|
|
if (isOpMuted[j]) {
|
|
rWrite(baseAddr+0x40,127);
|
|
} else if (KVS(i,j)) {
|
|
rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[j].vol&0x7f,127));
|
|
} else {
|
|
rWrite(baseAddr+0x40,op.tl);
|
|
}
|
|
} else {
|
|
if (isMuted[i]) {
|
|
rWrite(baseAddr+ADDR_TL,127);
|
|
} else {
|
|
if (KVS(i,j)) {
|
|
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
|
|
} else {
|
|
rWrite(baseAddr+ADDR_TL,op.tl);
|
|
}
|
|
}
|
|
}
|
|
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
|
|
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
|
|
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
|
|
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
|
|
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
|
|
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
|
|
}
|
|
rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
|
|
rWrite(chanOffs[i]+ADDR_LRAF,(isMuted[i]?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
|
|
if (chan[i].active) {
|
|
chan[i].keyOn=true;
|
|
chan[i].freqChanged=true;
|
|
}
|
|
}
|
|
for (int i=adpcmAChanOffs; i<=adpcmBChanOffs; i++) {
|
|
chan[i].insChanged=true;
|
|
}
|
|
ay->forceIns();
|
|
ay->flushWrites();
|
|
for (DivRegWrite& i: ay->getRegisterWrites()) {
|
|
if (i.addr>15) continue;
|
|
immWrite(i.addr&15,i.val);
|
|
}
|
|
ay->getRegisterWrites().clear();
|
|
for (int i=0; i<4; i++) {
|
|
opChan[i].insChanged=true;
|
|
if (opChan[i].active) {
|
|
opChan[i].keyOn=true;
|
|
opChan[i].freqChanged=true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void* DivPlatformYM2610Ext::getChanState(int ch) {
|
|
if (ch>=(extChanOffs+4)) return &chan[ch-3];
|
|
if (ch>=extChanOffs) return &opChan[ch-extChanOffs];
|
|
return &chan[ch];
|
|
}
|
|
|
|
DivMacroInt* DivPlatformYM2610Ext::getChanMacroInt(int ch) {
|
|
if (ch>=(psgChanOffs+3) && ch<(adpcmAChanOffs+3)) return ay->getChanMacroInt(ch-psgChanOffs-3);
|
|
if (ch>=(extChanOffs+4)) return &chan[ch-3].std;
|
|
if (ch>=extChanOffs) return NULL; // currently not implemented
|
|
return &chan[ch].std;
|
|
}
|
|
|
|
DivDispatchOscBuffer* DivPlatformYM2610Ext::getOscBuffer(int ch) {
|
|
if (ch>=(extChanOffs+4)) return oscBuf[ch-3];
|
|
if (ch<(extChanOffs+1)) return oscBuf[ch];
|
|
return NULL;
|
|
}
|
|
|
|
void DivPlatformYM2610Ext::reset() {
|
|
DivPlatformYM2610::reset();
|
|
|
|
for (int i=0; i<4; i++) {
|
|
opChan[i]=DivPlatformYM2610Ext::OpChannel();
|
|
opChan[i].vol=127;
|
|
}
|
|
|
|
// channel 2 mode
|
|
immWrite(0x27,0x40);
|
|
extMode=true;
|
|
}
|
|
|
|
bool DivPlatformYM2610Ext::keyOffAffectsArp(int ch) {
|
|
return (ch>=(psgChanOffs+3));
|
|
}
|
|
|
|
void DivPlatformYM2610Ext::notifyInsChange(int ins) {
|
|
DivPlatformYM2610::notifyInsChange(ins);
|
|
for (int i=0; i<4; i++) {
|
|
if (opChan[i].ins==ins) {
|
|
opChan[i].insChanged=true;
|
|
}
|
|
}
|
|
}
|
|
|
|
int DivPlatformYM2610Ext::init(DivEngine* parent, int channels, int sugRate, const DivConfig& flags) {
|
|
DivPlatformYM2610::init(parent,channels,sugRate,flags);
|
|
for (int i=0; i<4; i++) {
|
|
isOpMuted[i]=false;
|
|
}
|
|
extSys=true;
|
|
|
|
reset();
|
|
return 17;
|
|
}
|
|
|
|
void DivPlatformYM2610Ext::quit() {
|
|
DivPlatformYM2610::quit();
|
|
}
|
|
|
|
DivPlatformYM2610Ext::~DivPlatformYM2610Ext() {
|
|
}
|