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add cutoff and pulse width slides for C64, SID2 and SID3

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Also add clipping for ADSR, duty and cutoff when in instrument types you go SID3 -> SID2 or SID2 -> C64 or SID3 -> C64
This commit is contained in:
LTVA1 2024-08-12 16:54:26 +03:00
parent e0df55749a
commit 46f1ae33c7
11 changed files with 162 additions and 18 deletions
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27
src/engine/platform/c64.cpp
View file

@ -158,6 +158,24 @@ void DivPlatformC64::tick(bool sysTick) {
int i=chanOrder[_i];
chan[i].std.next();
if(sysTick)
{
if(chan[i].pw_slide != 0)
{
chan[i].duty -= chan[i].pw_slide;
chan[i].duty = CLAMP(chan[i].duty, 0, 0xfff);
rWrite(i*7+2,chan[i].duty&0xff);
rWrite(i*7+3,(chan[i].duty>>8) | (chan[i].outVol << 4));
}
if(cutoff_slide != 0)
{
filtCut += cutoff_slide;
filtCut = CLAMP(filtCut, 0, 0x7ff);
updateFilter();
}
}
if (chan[i].std.vol.had) {
vol=MIN(15,chan[i].std.vol.val);
willUpdateFilter=true;
@ -535,6 +553,12 @@ int DivPlatformC64::dispatch(DivCommand c) {
chan[c.chan].release=c.value&15;
rWrite(c.chan*7+6,(chan[c.chan].sustain<<4)|(chan[c.chan].release));
break;
case DIV_CMD_C64_PW_SLIDE:
chan[c.chan].pw_slide = c.value * c.value2;
break;
case DIV_CMD_C64_CUTOFF_SLIDE:
cutoff_slide = c.value * c.value2;
break;
case DIV_CMD_MACRO_OFF:
chan[c.chan].std.mask(c.value,true);
break;
@ -653,8 +677,11 @@ void DivPlatformC64::reset() {
chan[i].std.setEngine(parent);
fakeLow[i]=0;
fakeBand[i]=0;
chan[i].pw_slide = 0;
}
cutoff_slide = 0;
if (sidCore==2) {
dSID_init(sid_d,chipClock,rate,sidIs6581?6581:8580,needInitTables);
dSID_setMuteMask(

5
src/engine/platform/c64.h
View file

@ -37,6 +37,7 @@ class DivPlatformC64: public DivDispatch {
short duty;
bool sweepChanged, filter;
bool resetMask, resetFilter, resetDuty, gate, ring, sync, test;
short pw_slide;
Channel():
SharedChannel<signed char>(15),
prevFreq(65535),
@ -56,7 +57,8 @@ class DivPlatformC64: public DivDispatch {
gate(true),
ring(false),
sync(false),
test(false) {}
test(false),
pw_slide(0) {}
};
Channel chan[3];
DivDispatchOscBuffer* oscBuf[3];
@ -76,6 +78,7 @@ class DivPlatformC64: public DivDispatch {
unsigned char writeOscBuf;
unsigned char sidCore;
int filtCut, resetTime, initResetTime;
short cutoff_slide;
bool keyPriority, sidIs6581, needInitTables, no1EUpdate, multiplyRel, macroRace;
unsigned char chanOrder[3];

27
src/engine/platform/sid2.cpp
View file

@ -113,6 +113,24 @@ void DivPlatformSID2::tick(bool sysTick) {
bool willUpdateFilter = false;
chan[i].std.next();
if(sysTick)
{
if(chan[i].pw_slide != 0)
{
chan[i].duty -= chan[i].pw_slide;
chan[i].duty = CLAMP(chan[i].duty, 0, 0xfff);
rWrite(i*7+2,chan[i].duty&0xff);
rWrite(i*7+3,(chan[i].duty>>8) | (chan[i].outVol << 4));
}
if(chan[i].cutoff_slide != 0)
{
chan[i].filtCut += chan[i].cutoff_slide;
chan[i].filtCut = CLAMP(chan[i].filtCut, 0, 0xfff);
updateFilter(i);
}
}
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LINEAR(chan[i].vol&15,MIN(15,chan[i].std.vol.val),15);
rWrite(i*7+3,(chan[i].duty>>8) | (chan[i].outVol << 4));
@ -521,6 +539,12 @@ int DivPlatformSID2::dispatch(DivCommand c) {
break;
}
break;
case DIV_CMD_C64_PW_SLIDE:
chan[c.chan].pw_slide = c.value * c.value2;
break;
case DIV_CMD_C64_CUTOFF_SLIDE:
chan[c.chan].cutoff_slide = c.value * c.value2;
break;
case DIV_CMD_MACRO_OFF:
chan[c.chan].std.mask(c.value,true);
break;
@ -633,6 +657,9 @@ void DivPlatformSID2::reset() {
chan[i].noise_mode = 0;
rWrite(0x3 + 7 * i,0xf0);
chan[i].cutoff_slide = 0;
chan[i].pw_slide = 0;
}
sid2->reset();

7
src/engine/platform/sid2.h
View file

@ -36,7 +36,8 @@ class DivPlatformSID2: public DivDispatch {
unsigned char noise_mode;
unsigned char mix_mode;
int filtCut;
bool do_pw_sweep_writes, do_cutoff_sweep_writes;
short cutoff_slide;
short pw_slide;
Channel():
SharedChannel<signed char>(15),
prevFreq(0x1ffff),
@ -60,8 +61,8 @@ class DivPlatformSID2: public DivDispatch {
noise_mode(0),
mix_mode(0),
filtCut(0),
do_pw_sweep_writes(false),
do_cutoff_sweep_writes(false) {}
cutoff_slide(0),
pw_slide(0) {}
};
Channel chan[3];
DivDispatchOscBuffer* oscBuf[3];

31
src/engine/platform/sid3.cpp
View file

@ -276,6 +276,25 @@ void DivPlatformSID3::tick(bool sysTick)
{
chan[i].std.next();
if(sysTick)
{
if(chan[i].pw_slide != 0)
{
chan[i].duty -= chan[i].pw_slide;
chan[i].duty = CLAMP(chan[i].duty, 0, 0xffff);
updateDuty(i);
}
for(int j = 0; j < SID3_NUM_FILTERS; j++) //filters' slides
{
if(chan[i].filt[j].cutoff_slide != 0)
{
chan[i].filt[j].cutoff += chan[i].filt[j].cutoff_slide;
chan[i].filt[j].cutoff = CLAMP(chan[i].filt[j].cutoff, 0, 0xffff);
updateFilter(i, j);
}
}
}
bool panChanged = false;
bool flagsChanged = false;
bool envChanged = false;
@ -644,6 +663,7 @@ int DivPlatformSID3::dispatch(DivCommand c) {
bool updEnv = false;
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_SID3);
int filter = 0;
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
@ -999,6 +1019,13 @@ int DivPlatformSID3::dispatch(DivCommand c) {
chan[c.chan].filt[(c.value >> 4) & 3].enabled = c.value & 1;
updateFilter(c.chan, (c.value >> 4) & 3);
break;
case DIV_CMD_C64_PW_SLIDE:
chan[c.chan].pw_slide = c.value * c.value2 * 16;
break;
case DIV_CMD_C64_CUTOFF_SLIDE:
filter = abs(c.value2) - 1;
chan[c.chan].filt[filter].cutoff_slide = c.value * (c.value2 > 0 ? 1 : -1) * 16;
break;
case DIV_CMD_SAMPLE_POS:
chan[c.chan].dacPos=c.value;
break;
@ -1108,6 +1135,8 @@ void DivPlatformSID3::reset() {
{
chan[i].filt[j].enabled = false;
updateFilter(i, j);
chan[i].filt[j].cutoff_slide = 0;
}
chan[i].panLeft = chan[i].panRight = 0xff;
@ -1116,6 +1145,8 @@ void DivPlatformSID3::reset() {
updatePanning(i);
chan[i].noiseLFSRMask = (1 << 29) | (1 << 5) | (1 << 3) | 1; //https://docs.amd.com/v/u/en-US/xapp052 for 30 bits: 30, 6, 4, 1
chan[i].pw_slide = 0;
}
sampleTick = 0;

14
src/engine/platform/sid3.h
View file

@ -29,7 +29,7 @@ class DivPlatformSID3: public DivDispatch {
struct Channel: public SharedChannel<signed short> {
int prevFreq;
unsigned char wave, special_wave, attack, decay, sustain, sr, release;
unsigned short duty;
int duty;
bool resetMask, resetFilter, resetDuty, gate, ring, sync, phase, oneBitNoise;
bool phaseReset, envReset, phaseResetNoise;
bool noiseFreqChanged;
@ -44,7 +44,7 @@ class DivPlatformSID3: public DivDispatch {
struct Filter
{
unsigned short cutoff;
int cutoff;
unsigned char resonance;
unsigned char output_volume;
unsigned char distortion_level;
@ -52,6 +52,8 @@ class DivPlatformSID3: public DivDispatch {
bool enabled;
unsigned char filter_matrix;
short cutoff_slide;
Filter():
cutoff(0),
resonance(0),
@ -59,7 +61,8 @@ class DivPlatformSID3: public DivDispatch {
distortion_level(0),
mode(0),
enabled(false),
filter_matrix(0) {}
filter_matrix(0),
cutoff_slide(0) {}
} filt[SID3_NUM_FILTERS];
int noise_baseNoteOverride;
@ -79,6 +82,8 @@ class DivPlatformSID3: public DivDispatch {
unsigned char phaseInv;
unsigned char feedback;
short pw_slide;
void handleArpNoise(int offset=0)
{
DivMacroStruct& m = this->std.op[3].am;
@ -176,7 +181,8 @@ class DivPlatformSID3: public DivDispatch {
dacPos(0),
dacSample(-1),
phaseInv(0),
feedback(0) {}
feedback(0),
pw_slide(0) {}
};
Channel chan[SID3_NUM_CHANNELS];
DivDispatchOscBuffer* oscBuf[SID3_NUM_CHANNELS];