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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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21
src/engine/platform/sms.cpp
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@ -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) {