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Merge branch 'master' of https://github.com/tildearrow/furnace into es5506_alt

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This commit is contained in:
cam900 2022-12-10 14:29:13 +09:00
commit 37e83c0905
45 changed files with 497 additions and 198 deletions
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32
src/engine/platform/sms.cpp
View file

@ -125,6 +125,8 @@ double DivPlatformSMS::NOTE_SN(int ch, int note) {
if (parent->song.linearPitch==2 || !easyNoise) {
return NOTE_PERIODIC(note);
}
int easyStartingPeriod=16;
int easyThreshold=round(12.0*log((chipClock/(easyStartingPeriod*CHIP_DIVIDER))/(0.0625*parent->song.tuning))/log(2.0))-3;
if (note>easyThreshold) {
return MAX(0,easyStartingPeriod-(note-easyThreshold));
}
@ -132,19 +134,23 @@ double DivPlatformSMS::NOTE_SN(int ch, int note) {
}
int DivPlatformSMS::snCalcFreq(int ch) {
if (parent->song.linearPitch==2 && easyNoise && chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2>(easyThreshold<<7)) {
int ret=(((easyStartingPeriod<<7)+0x40)-(chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2-(easyThreshold<<7)))>>7;
double CHIP_DIVIDER=toneDivider;
if (ch==3) CHIP_DIVIDER=noiseDivider;
int easyStartingPeriod=16;
int easyThreshold=round(128.0*12.0*log((chipClock/(easyStartingPeriod*CHIP_DIVIDER))/(0.0625*parent->song.tuning))/log(2.0))-384+64;
if (parent->song.linearPitch==2 && easyNoise && chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2>(easyThreshold)) {
int ret=(((easyStartingPeriod<<7))-(chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2-(easyThreshold)))>>7;
if (ret<0) ret=0;
return ret;
}
return parent->calcFreq(chan[ch].baseFreq,chan[ch].pitch,true,0,chan[ch].pitch2,chipClock,ch==3?noiseDivider:toneDivider);
return parent->calcFreq(chan[ch].baseFreq,chan[ch].pitch,true,0,chan[ch].pitch2,chipClock,CHIP_DIVIDER);
}
void DivPlatformSMS::tick(bool sysTick) {
for (int i=0; i<4; i++) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LOG_BROKEN(chan[i].std.vol.val,chan[i].vol,15);
chan[i].outVol=VOL_SCALE_LOG(chan[i].std.vol.val,chan[i].vol,15);
if (chan[i].outVol<0) chan[i].outVol=0;
// old formula
// ((chan[i].vol&15)*MIN(15,chan[i].std.vol.val))>>4;
@ -152,7 +158,6 @@ void DivPlatformSMS::tick(bool sysTick) {
}
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
// TODO: check whether this weird octave boundary thing applies to other systems as well
// TODO: add compatibility flag. this is horrible.
int areYouSerious=parent->calcArp(chan[i].note,chan[i].std.arp.val);
while (areYouSerious>0x60) areYouSerious-=12;
@ -422,7 +427,7 @@ void DivPlatformSMS::reset() {
YMPSG_Init(&sn_nuked,isRealSN,12,isRealSN?13:15,isRealSN?16383:32767);
snNoiseMode=3;
rWrite(0,0xe7);
updateSNMode=false;
updateSNMode=true;
oldValue=0xff;
lastPan=0xff;
if (stereo) {
@ -464,38 +469,24 @@ void DivPlatformSMS::setFlags(const DivConfig& flags) {
switch (flags.getInt("clockSel",0)) {
case 1:
chipClock=COLOR_PAL*4.0/5.0;
easyThreshold=84;
easyStartingPeriod=13;
break;
case 2:
chipClock=4000000;
easyThreshold=86;
easyStartingPeriod=13;
break;
case 3:
chipClock=COLOR_NTSC/2.0;
easyThreshold=72;
easyStartingPeriod=13;
break;
case 4:
chipClock=3000000;
easyThreshold=81;
easyStartingPeriod=13;
break;
case 5:
chipClock=2000000;
easyThreshold=74;
easyStartingPeriod=13;
break;
case 6:
chipClock=COLOR_NTSC/8.0;
easyThreshold=48;
easyStartingPeriod=13;
break;
default:
chipClock=COLOR_NTSC;
easyThreshold=84;
easyStartingPeriod=13;
break;
}
CHECK_CUSTOM_CLOCK;
@ -569,6 +560,7 @@ void DivPlatformSMS::setFlags(const DivConfig& flags) {
stereo=false;
break;
}
rate=chipClock/divider;
for (int i=0; i<4; i++) {
oscBuf[i]->rate=rate;

2
src/engine/platform/sms.h
View file

@ -65,8 +65,6 @@ class DivPlatformSMS: public DivDispatch {
int divider=16;
double toneDivider=64.0;
double noiseDivider=64.0;
int easyThreshold;
int easyStartingPeriod;
bool updateSNMode;
bool resetPhase;
bool isRealSN;