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add song tuning

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soon: system clock settings
This commit is contained in:
tildearrow 2022-01-28 00:55:51 -05:00
parent 0071894471
commit ec66b7a21b
26 changed files with 211 additions and 156 deletions
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BIN
demos/bruno_time.fur
View file

Binary file not shown.

3
papers/format.md
View file

@ -69,7 +69,8 @@ size | description
128 | sound chip parameters (TODO)
??? | song name
??? | song author
24 | reserved for compatibility flags
4f | A-4 tuning
20 | reserved
4?? | pointers to instruments
4?? | pointers to wavetables
4?? | pointers to samples

12
src/engine/dispatch.h
View file

@ -144,6 +144,11 @@ class DivDispatch {
* the engine shall resample to the output rate.
*/
int rate;
/**
* the actual chip's clock.
*/
int chipClock;
/**
* fill a buffer with sound data.
@ -288,4 +293,11 @@ class DivDispatch {
virtual ~DivDispatch();
};
#define NOTE_PERIODIC(x) parent->calcBaseFreq(chipClock,CHIP_DIVIDER,x,true)
#define NOTE_FREQUENCY(x) parent->calcBaseFreq(chipClock,CHIP_FREQBASE,x,false)
#define COLOR_NTSC (315000000.0/88.0)
#define COLOR_PAL (283.75*15625.0+25.0)
#endif

23
src/engine/engine.cpp
View file

@ -1355,8 +1355,14 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
ds.author=reader.readString();
logI("%s by %s\n",ds.name.c_str(),ds.author.c_str());
if (ds.version>=33) {
ds.tuning=reader.readF();
} else {
reader.readI();
}
// reserved
for (int i=0; i<24; i++) reader.readC();
for (int i=0; i<20; i++) reader.readC();
// pointers
reader.read(insPtr,ds.insLen*4);
@ -1699,9 +1705,11 @@ SafeWriter* DivEngine::saveFur() {
w->writeString(song.name,false);
// song author
w->writeString(song.author,false);
w->writeF(song.tuning);
// reserved
for (int i=0; i<24; i++) {
for (int i=0; i<20; i++) {
w->writeC(0);
}
@ -3886,6 +3894,13 @@ void DivEngine::playSub(bool preserveDrift) {
}
}
int DivEngine::calcBaseFreq(double clock, double divider, int note, bool period) {
double base=(period?(song.tuning*0.0625):song.tuning)*pow(2.0,(float)(note+3)/12.0);
return period?
round((clock/base)/divider):
base*(divider/clock);
}
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):
@ -4014,7 +4029,7 @@ void DivEngine::previewSample(int sample, int note) {
blip_clear(samp_bb);
double rate=song.sample[sample]->rate;
if (note>=0) {
rate=(440.0*pow(2.0,(double)(note+3)/12.0));
rate=(song.tuning*pow(2.0,(double)(note+3)/12.0));
if (rate<=0) rate=song.sample[sample]->rate;
}
blip_set_rates(samp_bb,rate,got.rate);
@ -4045,7 +4060,7 @@ void DivEngine::previewWave(int wave, int note) {
return;
}
blip_clear(samp_bb);
blip_set_rates(samp_bb,song.wave[wave]->len*(27.5*pow(2.0,(double)(note+3)/12.0)),got.rate);
blip_set_rates(samp_bb,song.wave[wave]->len*((song.tuning*0.0625)*pow(2.0,(double)(note+3)/12.0)),got.rate);
samp_prevSample=0;
sPreview.pos=0;
sPreview.sample=-1;

7
src/engine/engine.h
View file

@ -11,8 +11,8 @@
#include <map>
#include <queue>
#define DIV_VERSION "0.5pre3"
#define DIV_ENGINE_VERSION 32
#define DIV_VERSION "0.5pre4"
#define DIV_ENGINE_VERSION 33
enum DivStatusView {
DIV_STATUS_NOTHING=0,
@ -260,6 +260,9 @@ class DivEngine {
void setConf(String key, double value);
void setConf(String key, String value);
// calculate base frequency/period
int calcBaseFreq(double clock, double divider, int note, bool period);
// calculate frequency/period
int calcFreq(int base, int pitch, bool period=false);

19
src/engine/platform/amiga.cpp
View file

@ -2,8 +2,8 @@
#include "../engine.h"
#include <math.h>
#define FREQ_BASE 6843.0f
#define AMIGA_DIVIDER 8
#define CHIP_DIVIDER 16
void DivPlatformAmiga::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t h=start; h<start+len; h++) {
@ -58,15 +58,15 @@ void DivPlatformAmiga::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
} else {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -100,7 +100,7 @@ int DivPlatformAmiga::dispatch(DivCommand c) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
}
chan[c.chan].sample=ins->amiga.initSample;
if (chan[c.chan].sample<0 || chan[c.chan].sample>=parent->song.sampleLen) {
@ -151,7 +151,7 @@ int DivPlatformAmiga::dispatch(DivCommand c) {
chan[c.chan].keyOn=true;
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(FREQ_BASE/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -174,7 +174,7 @@ int DivPlatformAmiga::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp-12):(0)))/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp-12):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
@ -243,10 +243,11 @@ void DivPlatformAmiga::notifyInsDeletion(void* ins) {
void DivPlatformAmiga::setPAL(bool pal) {
if (pal) {
rate=3546895/AMIGA_DIVIDER;
chipClock=COLOR_PAL*4.0/5.0;
} else {
rate=3579545/AMIGA_DIVIDER;
chipClock=COLOR_NTSC;
}
rate=chipClock/AMIGA_DIVIDER;
}
int DivPlatformAmiga::init(DivEngine* p, int channels, int sugRate, bool pal) {

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

@ -330,7 +330,7 @@ void DivPlatformArcade::tick() {
if (chan[i].freqChanged) {
chan[i].freq=chan[i].baseFreq+(chan[i].pitch>>1)-64;
if (chan[i].furnacePCM) {
chan[i].pcm.freq=MIN(255,((440.0*pow(2.0,double(chan[i].freq+256)/(64.0*12.0)))*255)/31250);
chan[i].pcm.freq=MIN(255,((parent->song.tuning*pow(2.0,double(chan[i].freq+256)/(64.0*12.0)))*255)/31250);
if (dumpWrites && i>=8) {
addWrite(0x10007+((i-8)<<3),chan[i].pcm.freq);
}

19
src/engine/platform/ay.cpp
View file

@ -7,7 +7,7 @@
#define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;}
#define immWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define PSG_FREQ_BASE 6848.0f
#define CHIP_DIVIDER 8
void DivPlatformAY8910::acquire(short* bufL, short* bufR, size_t start, size_t len) {
if (ayBufLen<len) {
@ -45,15 +45,15 @@ void DivPlatformAY8910::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
} else {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -146,7 +146,7 @@ int DivPlatformAY8910::dispatch(DivCommand c) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -193,7 +193,7 @@ int DivPlatformAY8910::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -216,7 +216,7 @@ int DivPlatformAY8910::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
break;
}
@ -357,10 +357,11 @@ void DivPlatformAY8910::notifyInsDeletion(void* ins) {
void DivPlatformAY8910::setPAL(bool pal) {
if (pal) {
rate=221681;
chipClock=COLOR_PAL*2.0/5.0;
} else {
rate=223722;
chipClock=COLOR_NTSC/2.0;
}
rate=chipClock/8;
}
int DivPlatformAY8910::init(DivEngine* p, int channels, int sugRate, bool pal) {

19
src/engine/platform/ay8930.cpp
View file

@ -7,7 +7,7 @@
#define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;}
#define immWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define PSG_FREQ_BASE 6848.0f
#define CHIP_DIVIDER 8
void DivPlatformAY8930::acquire(short* bufL, short* bufR, size_t start, size_t len) {
if (ayBufLen<len) {
@ -66,15 +66,15 @@ void DivPlatformAY8930::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
} else {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -172,7 +172,7 @@ int DivPlatformAY8930::dispatch(DivCommand c) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -220,7 +220,7 @@ int DivPlatformAY8930::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -243,7 +243,7 @@ int DivPlatformAY8930::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
break;
}
@ -392,10 +392,11 @@ void DivPlatformAY8930::notifyInsDeletion(void* ins) {
void DivPlatformAY8930::setPAL(bool pal) {
if (pal) {
rate=221681;
chipClock=COLOR_PAL*2.0/5.0;
} else {
rate=223722;
chipClock=COLOR_NTSC/2.0;
}
rate=chipClock/8;
}
int DivPlatformAY8930::init(DivEngine* p, int channels, int sugRate, bool pal) {

21
src/engine/platform/c64.cpp
View file

@ -2,10 +2,10 @@
#include "../engine.h"
#include <math.h>
#define FREQ_BASE 277.0f
#define rWrite(a,v) if (!skipRegisterWrites) {sid.write(a,v); if (dumpWrites) {addWrite(a,v);} }
#define CHIP_FREQBASE 524288
void DivPlatformC64::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t i=start; i<start+len; i++) {
sid.clock();
@ -42,15 +42,15 @@ void DivPlatformC64::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(FREQ_BASE*pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].std.arp);
} else {
chan[i].baseFreq=round(FREQ_BASE*pow(2.0f,((float)(chan[i].note+(signed char)chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note+(signed char)chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(FREQ_BASE*pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -104,7 +104,7 @@ int DivPlatformC64::dispatch(DivCommand c) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(FREQ_BASE*pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -170,7 +170,7 @@ int DivPlatformC64::dispatch(DivCommand c) {
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(FREQ_BASE*pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_FREQUENCY(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -207,7 +207,7 @@ int DivPlatformC64::dispatch(DivCommand c) {
rWrite(c.chan*7+4,(chan[c.chan].wave<<4)|(chan[c.chan].ring<<2)|(chan[c.chan].sync<<1)|chan[c.chan].active);
break;
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=round(FREQ_BASE*pow(2.0f,((float)(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)))/12.0f)));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
@ -357,10 +357,11 @@ void DivPlatformC64::setChipModel(bool is6581) {
void DivPlatformC64::setPAL(bool pal) {
if (pal) {
rate=985248;
rate=COLOR_PAL*2.0/9.0;
} else {
rate=1022727;
rate=COLOR_NTSC*2.0/7.0;
}
chipClock=rate;
}
int DivPlatformC64::init(DivEngine* p, int channels, int sugRate, bool pal) {

17
src/engine/platform/gb.cpp
View file

@ -5,7 +5,7 @@
#define rWrite(a,v) if (!skipRegisterWrites) {GB_apu_write(gb,a,v); if (dumpWrites) {addWrite(a,v);} }
#define immWrite(a,v) {GB_apu_write(gb,a,v); if (dumpWrites) {addWrite(a,v);} }
#define FREQ_BASE 8015.85f
#define CHIP_DIVIDER 16
void DivPlatformGB::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t i=start; i<start+len; i++) {
@ -91,16 +91,16 @@ void DivPlatformGB::tick() {
} else {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp+24)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp+24);
} else {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
}
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -181,7 +181,7 @@ int DivPlatformGB::dispatch(DivCommand c) {
if (c.chan==3) { // noise
chan[c.chan].baseFreq=c.value;
} else {
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
}
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
@ -223,7 +223,7 @@ int DivPlatformGB::dispatch(DivCommand c) {
chan[c.chan].keyOn=true;
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(FREQ_BASE/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -261,7 +261,7 @@ int DivPlatformGB::dispatch(DivCommand c) {
}
case DIV_CMD_LEGATO:
if (c.chan==3) break;
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)))/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
@ -356,7 +356,8 @@ int DivPlatformGB::init(DivEngine* p, int channels, int sugRate, bool pal) {
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
rate=262144;
chipClock=4194304;
rate=chipClock/16;
gb=new GB_gameboy_t;
reset();
return 4;

22
src/engine/platform/genesis.cpp
View file

@ -9,6 +9,8 @@ static unsigned char konOffs[6]={
0, 1, 2, 4, 5, 6
};
#define CHIP_FREQBASE 9440540
void DivPlatformGenesis::acquire(short* bufL, short* bufR, size_t start, size_t len) {
static short o[2];
static int os[2];
@ -104,15 +106,15 @@ void DivPlatformGenesis::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=644.0f*pow(2.0f,((float)chan[i].std.arp/12.0f));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].std.arp);
} else {
chan[i].baseFreq=644.0f*pow(2.0f,((float)(chan[i].note+(signed char)chan[i].std.arp)/12.0f));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note+(signed char)chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=644.0f*pow(2.0f,((float)chan[i].note/12.0f));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -307,7 +309,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
}
dacPos=0;
dacPeriod=0;
chan[c.chan].baseFreq=644.0f*pow(2.0f,((float)c.value/12.0f));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].furnaceDac=true;
} else { // compatible mode
@ -365,7 +367,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=644.0f*pow(2.0f,((float)c.value/12.0f));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
@ -428,7 +430,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=644.0f*pow(2.0f,((float)c.value2/12.0f));
int destFreq=NOTE_FREQUENCY(c.value2);
int newFreq;
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
@ -471,7 +473,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
}
break;
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=644.0f*pow(2.0f,((float)c.value/12.0f));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
break;
@ -638,10 +640,12 @@ void DivPlatformGenesis::notifyInsDeletion(void* ins) {
void DivPlatformGenesis::setPAL(bool pal) {
if (pal) {
rate=211125;
chipClock=COLOR_PAL*12.0/7.0;
} else {
rate=213068;
chipClock=COLOR_NTSC*15.0/7.0;
}
psg.setPAL(pal);
rate=chipClock/36;
}
int DivPlatformGenesis::init(DivEngine* p, int channels, int sugRate, bool pal) {

8
src/engine/platform/genesisext.cpp
View file

@ -4,6 +4,8 @@
#include "genesisshared.h"
#define CHIP_FREQBASE 9440540
int DivPlatformGenesisExt::dispatch(DivCommand c) {
if (c.chan<2) {
return DivPlatformGenesis::dispatch(c);
@ -54,7 +56,7 @@ int DivPlatformGenesisExt::dispatch(DivCommand c) {
opChan[ch].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
opChan[ch].baseFreq=644.0f*pow(2.0f,((float)c.value/12.0f));
opChan[ch].baseFreq=NOTE_FREQUENCY(c.value);
opChan[ch].freqChanged=true;
}
opChan[ch].keyOn=true;
@ -108,7 +110,7 @@ int DivPlatformGenesisExt::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=644.0f*pow(2.0f,((float)c.value2/12.0f));
int destFreq=NOTE_FREQUENCY(c.value2);
int newFreq;
bool return2=false;
if (destFreq>opChan[ch].baseFreq) {
@ -141,7 +143,7 @@ int DivPlatformGenesisExt::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO: {
opChan[ch].baseFreq=644.0f*pow(2.0f,((float)c.value/12.0f));
opChan[ch].baseFreq=NOTE_FREQUENCY(c.value);
opChan[ch].freqChanged=true;
break;
}

24
src/engine/platform/nes.cpp
View file

@ -4,8 +4,7 @@
#include <cstddef>
#include <math.h>
#define FREQ_BASE 3424.0f
#define FREQ_BASE_PAL 3180.0f
#define CHIP_DIVIDER 16
#define rWrite(a,v) if (!skipRegisterWrites) {apu_wr_reg(nes,a,v); if (dumpWrites) {addWrite(a,v);} }
@ -97,16 +96,16 @@ void DivPlatformNES::tick() {
} else {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(freqBase/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
} else {
chan[i].baseFreq=round(freqBase/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
}
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(freqBase/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -190,7 +189,7 @@ int DivPlatformNES::dispatch(DivCommand c) {
}
dacPos=0;
dacPeriod=0;
chan[c.chan].baseFreq=440.0f*pow(2.0f,((float)(c.value+3)/12.0f));
chan[c.chan].baseFreq=parent->song.tuning*pow(2.0f,((float)(c.value+3)/12.0f));
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
@ -220,7 +219,7 @@ int DivPlatformNES::dispatch(DivCommand c) {
}
} else {
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(freqBase/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
}
}
if (c.value!=DIV_NOTE_NULL) {
@ -273,7 +272,7 @@ int DivPlatformNES::dispatch(DivCommand c) {
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(freqBase/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -309,7 +308,7 @@ int DivPlatformNES::dispatch(DivCommand c) {
break;
case DIV_CMD_LEGATO:
if (c.chan==3) break;
chan[c.chan].baseFreq=round(freqBase/pow(2.0f,((float)(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)))/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
@ -377,16 +376,15 @@ bool DivPlatformNES::keyOffAffectsArp(int ch) {
void DivPlatformNES::setPAL(bool pal) {
if (pal) {
rate=1662607;
freqBase=FREQ_BASE_PAL;
rate=COLOR_PAL*3.0/8.0;
apuType=1;
nes->apu.type=apuType;
} else {
rate=1789773;
freqBase=FREQ_BASE;
rate=COLOR_NTSC/2.0;
apuType=0;
nes->apu.type=apuType;
}
chipClock=rate;
}
void DivPlatformNES::notifyInsDeletion(void* ins) {

1
src/engine/platform/nes.h
View file

@ -41,7 +41,6 @@ class DivPlatformNES: public DivDispatch {
unsigned char apuType;
struct NESAPU* nes;
float freqBase;
friend void putDispatchChan(void*,int,int);
public:

23
src/engine/platform/pce.cpp
View file

@ -13,7 +13,7 @@
rWrite(a,v); \
}
#define FREQ_BASE 1712.0f*2
#define CHIP_DIVIDER 32
void DivPlatformPCE::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t h=start; h<start+len; h++) {
@ -109,18 +109,18 @@ void DivPlatformPCE::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
// noise
chWrite(i,0x07,chan[i].noise?(0x80|noiseFreq[(chan[i].std.arp)%12]):0);
} else {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
chWrite(i,0x07,chan[i].noise?(0x80|noiseFreq[(chan[i].note+chan[i].std.arp)%12]):0);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chWrite(i,0x07,chan[i].noise?(0x80|noiseFreq[chan[i].note%12]):0);
chan[i].freqChanged=true;
}
@ -136,7 +136,7 @@ void DivPlatformPCE::tick() {
//DivInstrument* ins=parent->getIns(chan[i].ins);
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true);
if (chan[i].furnaceDac) {
chan[i].dacRate=1789773/chan[i].freq;
chan[i].dacRate=chipClock/chan[i].freq;
if (dumpWrites) addWrite(0xffff0001+(i<<8),chan[i].dacRate);
}
if (chan[i].freq>4095) chan[i].freq=4095;
@ -186,7 +186,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -215,7 +215,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
break;
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
chWrite(c.chan,0x07,chan[c.chan].noise?(0x80|noiseFreq[chan[c.chan].note%12]):0);
@ -270,7 +270,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
rWrite(0x08,c.value);
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(FREQ_BASE/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -311,7 +311,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)))/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
@ -398,10 +398,11 @@ void DivPlatformPCE::notifyInsDeletion(void* ins) {
void DivPlatformPCE::setPAL(bool pal) {
if (pal) { // technically there is no PAL PC Engine but oh well...
rate=1773448/6;
chipClock=COLOR_PAL*4.0/5.0;
} else {
rate=1789773/6;
chipClock=COLOR_NTSC;
}
rate=chipClock/12;
}
int DivPlatformPCE::init(DivEngine* p, int channels, int sugRate, bool pal) {

21
src/engine/platform/saa.cpp
View file

@ -6,7 +6,7 @@
#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define PSG_FREQ_BASE 122240.0f
#define CHIP_DIVIDER 2
void DivPlatformSAA1099::acquire(short* bufL, short* bufR, size_t start, size_t len) {
if (saaBufLen<len) {
@ -48,15 +48,15 @@ void DivPlatformSAA1099::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
} else {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -124,7 +124,7 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -171,7 +171,7 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value*(8-chan[c.chan].freqH);
@ -202,7 +202,7 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
}
break;
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
break;
}
@ -308,11 +308,8 @@ void DivPlatformSAA1099::notifyInsDeletion(void* ins) {
}
void DivPlatformSAA1099::setPAL(bool pal) {
if (pal) {
rate=250000;
} else {
rate=250000;
}
chipClock=8000000;
rate=chipClock/32;
}
int DivPlatformSAA1099::init(DivEngine* p, int channels, int sugRate, bool pal) {

21
src/engine/platform/sms.cpp
View file

@ -2,10 +2,10 @@
#include "../engine.h"
#include <math.h>
#define FREQ_BASE 1712.0f
#define rWrite(v) {if (!skipRegisterWrites) {sn->write(v); if (dumpWrites) {addWrite(0x200,v);}}}
#define CHIP_DIVIDER 64
void DivPlatformSMS::acquire(short* bufL, short* bufR, size_t start, size_t len) {
sn->sound_stream_update(bufL+start,len);
}
@ -25,14 +25,14 @@ void DivPlatformSMS::tick() {
}
if (chan[i].std.hadArp) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
} else {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -93,7 +93,7 @@ int DivPlatformSMS::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON:
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -130,7 +130,7 @@ int DivPlatformSMS::dispatch(DivCommand c) {
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(FREQ_BASE/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -154,7 +154,7 @@ int DivPlatformSMS::dispatch(DivCommand c) {
updateSNMode=true;
break;
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)))/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
@ -223,10 +223,11 @@ void DivPlatformSMS::notifyInsDeletion(void* ins) {
void DivPlatformSMS::setPAL(bool pal) {
if (pal) {
rate=221681;
chipClock=COLOR_PAL*4.0/5.0;
} else {
rate=223722;
chipClock=COLOR_NTSC;
}
rate=chipClock/16;
}
int DivPlatformSMS::init(DivEngine* p, int channels, int sugRate, bool pal) {

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

@ -9,12 +9,12 @@ void DivPlatformTIA::acquire(short* bufL, short* bufR, size_t start, size_t len)
tia.process(bufL+start,len);
}
unsigned char dealWithFreq(unsigned char shape, int base, int pitch) {
unsigned char DivPlatformTIA::dealWithFreq(unsigned char shape, int base, int pitch) {
if (base&0x80000000 && ((base&0x7fffffff)<32)) {
return base&0x1f;
}
int bp=base+pitch;
double mult=0.25*27.5*pow(2.0,double(768+bp)/(256.0*12.0));
double mult=0.25*(parent->song.tuning*0.0625)*pow(2.0,double(768+bp)/(256.0*12.0));
switch (shape) {
case 1: // buzzy
return ceil(31400/(30.6*mult))-1;

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

@ -20,6 +20,8 @@ class DivPlatformTIA: public DivDispatch {
bool isMuted[2];
TIASound tia;
friend void putDispatchChan(void*,int,int);
unsigned char dealWithFreq(unsigned char shape, int base, int pitch);
public:
void acquire(short* bufL, short* bufR, size_t start, size_t len);

61
src/engine/platform/ym2610.cpp
View file

@ -11,6 +11,8 @@ static unsigned char konOffs[4]={
1, 2, 5, 6
};
#define CHIP_DIVIDER 32
void DivPlatformYM2610::acquire(short* bufL, short* bufR, size_t start, size_t len) {
static int os[2];
@ -57,15 +59,15 @@ void DivPlatformYM2610::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
} else {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -165,15 +167,15 @@ void DivPlatformYM2610::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=FM_FREQ_BASE*pow(2.0f,((float)chan[i].std.arp/12.0f));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].std.arp);
} else {
chan[i].baseFreq=FM_FREQ_BASE*pow(2.0f,((float)(chan[i].note+(signed char)chan[i].std.arp)/12.0f));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note+(signed char)chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=FM_FREQ_BASE*pow(2.0f,((float)chan[i].note/12.0f));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -278,19 +280,19 @@ void DivPlatformYM2610::tick() {
}
int DivPlatformYM2610::octave(int freq) {
if (freq>=FM_FREQ_BASE*128) {
if (freq>=622.0f*128) {
return 128;
} else if (freq>=FM_FREQ_BASE*64) {
} else if (freq>=622.0f*64) {
return 64;
} else if (freq>=FM_FREQ_BASE*32) {
} else if (freq>=622.0f*32) {
return 32;
} else if (freq>=FM_FREQ_BASE*16) {
} else if (freq>=622.0f*16) {
return 16;
} else if (freq>=FM_FREQ_BASE*8) {
} else if (freq>=622.0f*8) {
return 8;
} else if (freq>=FM_FREQ_BASE*4) {
} else if (freq>=622.0f*4) {
return 4;
} else if (freq>=FM_FREQ_BASE*2) {
} else if (freq>=622.0f*2) {
return 2;
} else {
return 1;
@ -299,19 +301,19 @@ int DivPlatformYM2610::octave(int freq) {
}
int DivPlatformYM2610::toFreq(int freq) {
if (freq>=FM_FREQ_BASE*128) {
if (freq>=622.0f*128) {
return 0x3800|((freq>>7)&0x7ff);
} else if (freq>=FM_FREQ_BASE*64) {
} else if (freq>=622.0f*64) {
return 0x3000|((freq>>6)&0x7ff);
} else if (freq>=FM_FREQ_BASE*32) {
} else if (freq>=622.0f*32) {
return 0x2800|((freq>>5)&0x7ff);
} else if (freq>=FM_FREQ_BASE*16) {
} else if (freq>=622.0f*16) {
return 0x2000|((freq>>4)&0x7ff);
} else if (freq>=FM_FREQ_BASE*8) {
} else if (freq>=622.0f*8) {
return 0x1800|((freq>>3)&0x7ff);
} else if (freq>=FM_FREQ_BASE*4) {
} else if (freq>=622.0f*4) {
return 0x1000|((freq>>2)&0x7ff);
} else if (freq>=FM_FREQ_BASE*2) {
} else if (freq>=622.0f*2) {
return 0x800|((freq>>1)&0x7ff);
} else {
return freq&0x7ff;
@ -351,7 +353,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
if (c.chan>3) { // PSG
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -397,7 +399,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=FM_FREQ_BASE*pow(2.0f,((float)c.value/12.0f));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -479,7 +481,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
}
case DIV_CMD_NOTE_PORTA: {
if (c.chan>3) { // PSG
int destFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -502,7 +504,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
break;
}
int destFreq=FM_FREQ_BASE*pow(2.0f,((float)c.value2/12.0f));
int destFreq=NOTE_FREQUENCY(c.value2);
int newFreq;
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
@ -539,9 +541,9 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
break;
case DIV_CMD_LEGATO: {
if (c.chan>3) { // PSG
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
} else {
chan[c.chan].baseFreq=FM_FREQ_BASE*pow(2.0f,((float)c.value/12.0f));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
}
chan[c.chan].freqChanged=true;
break;
@ -794,11 +796,8 @@ int DivPlatformYM2610::init(DivEngine* p, int channels, int sugRate, bool pal) {
for (int i=0; i<13; i++) {
isMuted[i]=false;
}
if (pal) {
rate=500000;
} else {
rate=500000;
}
chipClock=8000000;
rate=chipClock/16;
iface.parent=parent;
iface.sampleBank=0;
fm=new ymfm::ym2610(iface);

6
src/engine/platform/ym2610ext.cpp
View file

@ -46,7 +46,7 @@ int DivPlatformYM2610Ext::dispatch(DivCommand c) {
opChan[ch].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
opChan[ch].baseFreq=FM_FREQ_BASE*pow(2.0f,((float)c.value/12.0f));
opChan[ch].baseFreq=NOTE_FREQUENCY(c.value);
opChan[ch].freqChanged=true;
}
opChan[ch].keyOn=true;
@ -102,7 +102,7 @@ int DivPlatformYM2610Ext::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=FM_FREQ_BASE*pow(2.0f,((float)c.value2/12.0f));
int destFreq=NOTE_FREQUENCY(c.value2);
int newFreq;
bool return2=false;
if (destFreq>opChan[ch].baseFreq) {
@ -135,7 +135,7 @@ int DivPlatformYM2610Ext::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO: {
opChan[ch].baseFreq=FM_FREQ_BASE*pow(2.0f,((float)c.value/12.0f));
opChan[ch].baseFreq=NOTE_FREQUENCY(c.value);
opChan[ch].freqChanged=true;
break;
}

3
src/engine/platform/ym2610shared.h
View file

@ -26,5 +26,4 @@ static int orderedOps[4]={
#define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;}
#define immWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define FM_FREQ_BASE 622.0f
#define PSG_FREQ_BASE 7640.0f
#define CHIP_FREQBASE 9509775

6
src/engine/playback.cpp
View file

@ -1005,6 +1005,11 @@ void DivEngine::nextBuf(float** in, float** out, int inChans, int outChans, unsi
}
if (!playing) {
if (out!=NULL) {
memcpy(oscBuf[0],out[0],size*sizeof(float));
memcpy(oscBuf[1],out[1],size*sizeof(float));
oscSize=size;
}
isBusy.unlock();
return;
}
@ -1139,7 +1144,6 @@ void DivEngine::nextBuf(float** in, float** out, int inChans, int outChans, unsi
while (metroPos>=1) metroPos--;
}
// TODO: improve
memcpy(oscBuf[0],out[0],size*sizeof(float));
memcpy(oscBuf[1],out[1],size*sizeof(float));
oscSize=size;

2
src/engine/song.h
View file

@ -106,6 +106,7 @@ struct DivSong {
bool pal;
bool customTempo;
int hz, patLen, ordersLen, insLen, waveLen, sampleLen;
float tuning;
// compatibility flags
bool limitSlides; // limit slide range
@ -151,6 +152,7 @@ struct DivSong {
insLen(0),
waveLen(0),
sampleLen(0),
tuning(440.0f),
limitSlides(false) {
for (int i=0; i<32; i++) {
system[i]=DIV_SYSTEM_NULL;

21
src/gui/gui.cpp
View file

@ -569,6 +569,16 @@ void FurnaceGUI::drawSongInfo() {
ImGui::SameLine();
ImGui::Text("NTSC");
}
ImGui::Text("Tuning (A-4)");
ImGui::SameLine();
float tune=e->song.tuning;
ImGui::SetNextItemWidth(120.0f*dpiScale);
if (ImGui::InputFloat("##Tuning",&tune,1.0f,3.0f,"%g")) {
if (tune<220.0f) tune=220.0f;
if (tune>660.0f) tune=660.0f;
e->song.tuning=tune;
}
}
if (ImGui::IsWindowFocused()) curWindow=GUI_WINDOW_SONG_INFO;
ImGui::End();
@ -1980,19 +1990,20 @@ void FurnaceGUI::drawMixer() {
void FurnaceGUI::drawOsc() {
if (!oscOpen) return;
ImGui::SetNextWindowSizeConstraints(ImVec2(64.0f*dpiScale,32.0f*dpiScale),ImVec2(scrW*dpiScale,scrH*dpiScale));
ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_FramePadding,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemInnerSpacing,ImVec2(0,0));
if (ImGui::Begin("Oscilloscope",&oscOpen)) {
ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_FramePadding,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemInnerSpacing,ImVec2(0,0));
float values[512];
for (int i=0; i<512; i++) {
int pos=i*e->oscSize/512;
values[i]=(e->oscBuf[0][pos]+e->oscBuf[1][pos])*0.5f;
}
//ImGui::SetCursorPos(ImVec2(0,0));
ImGui::PlotLines("##SingleOsc",values,512,0,NULL,-1.0f,1.0f,ImGui::GetContentRegionAvail());
ImGui::PopStyleVar(4);
}
ImGui::PopStyleVar(4);
ImGui::End();
}