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FDS: lower CPU usage

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This commit is contained in:
tildearrow 2025-03-03 02:27:00 -05:00
parent b3b50bdb66
commit 71ac185cbf
1 changed files with 8 additions and 8 deletions
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14
src/engine/platform/fds.cpp
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@ -75,17 +75,14 @@ void DivPlatformFDS::acquire_NSFPlay(short* buf, size_t len) {
int out[2]; int out[2];
oscBuf->begin(len); oscBuf->begin(len);
for (size_t i=0; i<len; i++) { for (size_t i=0; i<len; i++) {
fds_NP->Tick(1); fds_NP->Tick(16);
fds_NP->Render(out); fds_NP->Render(out);
int sample=isMuted[0]?0:(out[0]<<1); int sample=isMuted[0]?0:(out[0]<<1);
if (sample>32767) sample=32767; if (sample>32767) sample=32767;
if (sample<-32768) sample=-32768; if (sample<-32768) sample=-32768;
buf[i]=sample; buf[i]=sample;
if (++writeOscBuf>=32) {
writeOscBuf=0;
oscBuf->putSample(i,sample*3); oscBuf->putSample(i,sample*3);
} }
}
oscBuf->end(len); oscBuf->end(len);
} }
@ -489,11 +486,14 @@ void DivPlatformFDS::setFlags(const DivConfig& flags) {
chipClock=COLOR_NTSC/2.0; chipClock=COLOR_NTSC/2.0;
} }
CHECK_CUSTOM_CLOCK; CHECK_CUSTOM_CLOCK;
if (useNP) {
rate=chipClock/16;
oscBuf->setRate(rate);
fds_NP->SetClock(chipClock);
fds_NP->SetRate(rate);
} else {
rate=chipClock; rate=chipClock;
oscBuf->setRate(rate); oscBuf->setRate(rate);
if (useNP) {
fds_NP->SetClock(rate);
fds_NP->SetRate(rate);
} }
} }