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ESFM: optimize osc buf

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This commit is contained in:
tildearrow 2025-03-03 01:45:42 -05:00
parent cf4807b5d0
commit b3b50bdb66
4 changed files with 68 additions and 9 deletions
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47
src/engine/platform/esfm.cpp
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@ -66,6 +66,46 @@ void DivPlatformESFM::acquire(short** buf, size_t len) {
}
}
void DivPlatformESFM::acquireDirect(blip_buffer_t** bb, size_t off, size_t len) {
thread_local short o[2];
unsigned int sharedNeedlePos=oscBuf[0]->needle;
for (int i=0; i<18; i++) {
oscBuf[i]->begin(len);
}
size_t pos=off;
for (size_t h=0; h<len; h++) {
if (!writes.empty()) {
QueuedWrite& w=writes.front();
ESFM_write_reg_buffered_fast(&chip,w.addr,w.val);
if (w.addr<ESFM_REG_POOL_SIZE) {
regPool[w.addr]=w.val;
}
writes.pop();
}
ESFM_generate(&chip,o);
const unsigned int shiftedNeedlePos=sharedNeedlePos>>OSCBUF_PREC;
for (int c=0; c<18; c++) {
putSampleIKnowWhatIAmDoing(oscBuf[c],shiftedNeedlePos,ESFM_get_channel_output_native(&chip,c));
}
sharedNeedlePos+=oscBuf[0]->rateMul;
if (o[0]!=oldOut[0]) {
blip_add_delta(bb[0],pos,oldOut[0]-o[0]);
oldOut[0]=o[0];
}
if (o[1]!=oldOut[1]) {
blip_add_delta(bb[1],pos,oldOut[1]-o[1]);
oldOut[1]=o[1];
}
pos++;
}
for (int i=0; i<18; i++) {
oscBuf[i]->end(len);
}
}
void DivPlatformESFM::tick(bool sysTick) {
for (int i=0; i<18; i++) {
chan[i].std.next();
@ -1024,6 +1064,9 @@ void DivPlatformESFM::reset() {
chan[i].vol=0x3f;
chan[i].outVol=0x3f;
}
oldOut[0]=0;
oldOut[1]=0;
}
int DivPlatformESFM::getOutputCount() {
@ -1038,6 +1081,10 @@ bool DivPlatformESFM::keyOffAffectsPorta(int ch) {
return false;
}
bool DivPlatformESFM::hasAcquireDirect() {
return true;
}
bool DivPlatformESFM::getLegacyAlwaysSetVolume() {
return false;
}