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finally do EFxx right

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took a while to figure out...
This commit is contained in:
tildearrow 2021-12-28 00:51:38 -05:00
parent b246000f0e
commit d766c4aaf0
13 changed files with 23 additions and 37 deletions
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6
src/engine/engine.cpp
View file

@ -1534,6 +1534,12 @@ void DivEngine::playSub(bool preserveDrift) {
}
}
int DivEngine::calcFreq(int base, int pitch, bool period) {
return period?
int(base*pow(2,-(double)pitch/(12.0*128.0))/(98.0+globalPitch*6.0)*98.0):
(int(base*pow(2,(double)pitch/(12.0*128.0))*(98+globalPitch*6))/98);
}
void DivEngine::play() {
isBusy.lock();
playSub(false);

3
src/engine/engine.h
View file

@ -157,6 +157,9 @@ class DivEngine {
void setConf(String key, double value);
void setConf(String key, String value);
// calculate frequency/period
int calcFreq(int base, int pitch, bool period=false);
// play
void play();

2
src/engine/platform/c64.cpp
View file

@ -69,7 +69,7 @@ void DivPlatformC64::tick() {
rWrite(i*7+4,(isMuted[i]?0:(chan[i].wave<<4))|(chan[i].ring<<2)|(chan[i].sync<<1)|chan[i].active);
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
chan[i].freq=(chan[i].baseFreq*pow(2,(double)chan[i].pitch/(12.0*128.0)));
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch);
if (chan[i].freq>0xffff) chan[i].freq=0xffff;
if (chan[i].keyOn) {
rWrite(i*7+5,(chan[i].attack<<4)|(chan[i].decay));

3
src/engine/platform/dummy.cpp
View file

@ -1,4 +1,5 @@
#include "dummy.h"
#include "../engine.h"
#include <stdio.h>
#include <math.h>
@ -25,7 +26,7 @@ void DivPlatformDummy::tick() {
if (chan[i].freqChanged) {
chan[i].freqChanged=false;
chan[i].freq=(chan[i].baseFreq*pow(2,(double)chan[i].pitch/(12.0*128.0)));
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch);
}
}
}

2
src/engine/platform/gb.cpp
View file

@ -126,7 +126,7 @@ void DivPlatformGB::tick() {
if (i==3) { // noise
chan[i].freq=noiseTable[chan[i].baseFreq];
} else {
chan[i].freq=(chan[i].baseFreq*pow(2,(double)-chan[i].pitch/(12.0*128.0)));
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true);
if (chan[i].freq>2047) chan[i].freq=2047;
}
if (chan[i].note>0x5d) chan[i].freq=0x01;

2
src/engine/platform/genesis.cpp
View file

@ -94,7 +94,7 @@ void DivPlatformGenesis::tick() {
for (int i=0; i<6; i++) {
if (i==2 && extMode) continue;
if (chan[i].freqChanged) {
chan[i].freq=(chan[i].baseFreq*pow(2,(double)chan[i].pitch/(12.0*128.0)));
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch);
int freqt=toFreq(chan[i].freq);
immWrite(chanOffs[i]+0xa4,freqt>>8);
immWrite(chanOffs[i]+0xa0,freqt&0xff);

2
src/engine/platform/genesisext.cpp
View file

@ -241,7 +241,7 @@ void DivPlatformGenesisExt::tick() {
unsigned char writeMask=2;
if (extMode) for (int i=0; i<4; i++) {
if (opChan[i].freqChanged) {
opChan[i].freq=(opChan[i].baseFreq*pow(2,(double)opChan[i].pitch/(12.0*128.0)));
opChan[i].freq=parent->calcFreq(opChan[i].baseFreq,opChan[i].pitch);
if (opChan[i].freq>=82432) {
opChan[i].freqH=((opChan[i].freq>>15)&7)|0x38;
opChan[i].freqL=(opChan[i].freq>>7)&0xff;

2
src/engine/platform/nes.cpp
View file

@ -121,7 +121,7 @@ void DivPlatformNES::tick() {
if (i==3) { // noise
chan[i].freq=noiseTable[chan[i].baseFreq];
} else {
chan[i].freq=(chan[i].baseFreq*pow(2,(double)-chan[i].pitch/(12.0*128.0)));
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true);
if (chan[i].freq>2047) chan[i].freq=2047;
}
if (chan[i].keyOn) {

2
src/engine/platform/pce.cpp
View file

@ -111,7 +111,7 @@ void DivPlatformPCE::tick() {
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
//DivInstrument* ins=parent->getIns(chan[i].ins);
chan[i].freq=(chan[i].baseFreq*pow(2,(double)-chan[i].pitch/(12.0*128.0)));
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true);
if (chan[i].freq>4095) chan[i].freq=4095;
if (chan[i].note>0x5d) chan[i].freq=0x01;
chWrite(i,0x02,chan[i].freq&0xff);

4
src/engine/platform/sms.cpp
View file

@ -37,7 +37,7 @@ void DivPlatformSMS::tick() {
}
for (int i=0; i<3; i++) {
if (chan[i].freqChanged) {
chan[i].freq=(chan[i].baseFreq*pow(2,(double)-chan[i].pitch/(12.0*128.0)));
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true);
if (chan[i].note>0x5d) chan[i].freq=0x01;
sn->write(0x80|i<<5|(chan[i].freq&15));
sn->write(chan[i].freq>>4);
@ -46,7 +46,7 @@ void DivPlatformSMS::tick() {
}
if (chan[3].freqChanged || updateSNMode) {
updateSNMode=false;
chan[3].freq=(chan[3].baseFreq*pow(2,(double)-chan[3].pitch/(12.0*128.0)));
chan[3].freq=parent->calcFreq(chan[3].baseFreq,chan[3].pitch,true);
if (chan[3].note>0x5d) chan[3].freq=0x01;
chan[3].freqChanged=false;
if (snNoiseMode&2) { // take period from channel 3

4
src/engine/platform/ym2610.cpp
View file

@ -75,7 +75,7 @@ void DivPlatformYM2610::tick() {
chan[i].psgMode|=(chan[i].std.wave+1)&3;
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
chan[i].freq=(chan[i].baseFreq*pow(2,(double)-chan[i].pitch/(12.0*128.0)));
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true);
if (chan[i].freq>4095) chan[i].freq=4095;
if (chan[i].keyOn) {
//rWrite(16+i*5+1,((chan[i].duty&3)<<6)|(63-(ins->gb.soundLen&63)));
@ -119,7 +119,7 @@ void DivPlatformYM2610::tick() {
for (int i=0; i<4; i++) {
if (i==1 && extMode) continue;
if (chan[i].freqChanged) {
chan[i].freq=(chan[i].baseFreq*pow(2,(double)chan[i].pitch/(12.0*128.0)));
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch);
int freqt=toFreq(chan[i].freq);
immWrite(chanOffs[i]+0xa4,freqt>>8);
immWrite(chanOffs[i]+0xa0,freqt&0xff);

2
src/engine/platform/ym2610ext.cpp
View file

@ -217,7 +217,7 @@ void DivPlatformYM2610Ext::tick() {
unsigned char writeMask=2;
if (extMode) for (int i=0; i<4; i++) {
if (opChan[i].freqChanged) {
opChan[i].freq=(opChan[i].baseFreq*pow(2,(double)opChan[i].pitch/(12.0*128.0)));
opChan[i].freq=parent->calcFreq(opChan[i].baseFreq,opChan[i].pitch);
int freqt=toFreq(opChan[i].freq);
opChan[i].freqH=freqt>>8;
opChan[i].freqL=freqt&0xff;

26
src/engine/playback.cpp
View file

@ -522,31 +522,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
extValuePresent=true;
break;
case 0xef: // global pitch
for (int i=0; i<chans; i++) {
chan[i].pitch-=globalPitch;
}
// what is this mess?
// are you for real? how does this effect even work?!
if (effectVal>0x80) {
for (int i=0; i<effectVal-0x80; i++) {
if (globalPitch<=0) {
globalPitch+=(120-(8*globalPitch)/55);
} else {
globalPitch+=(120-globalPitch/32);
}
}
} else if (effectVal<0x80) {
for (int i=0; i<0x80-effectVal; i++) {
if (globalPitch<=0) {
globalPitch-=(120-(8*globalPitch)/55);
} else {
globalPitch-=(120-globalPitch/32);
}
}
}
for (int i=0; i<chans; i++) {
chan[i].pitch+=globalPitch;
}
globalPitch+=(signed char)(effectVal-0x80);
break;
}
}