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prepare new chan osc code

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chan osc output will be 65536Hz - always
new functions for initializing the osc buffer and all
This commit is contained in:
tildearrow 2025-02-26 20:29:13 -05:00
parent e94d99d79e
commit c83ecfe993
4 changed files with 30 additions and 0 deletions
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4
src/engine/platform/abstract.cpp
View file

@ -134,6 +134,10 @@ bool DivDispatch::hasAcquireDirect() {
return false;
}
bool DivDispatch::isOscBufPositional() {
return false;
}
bool DivDispatch::getWantPreNote() {
return false;
}

10
src/engine/platform/pcspkr.cpp
View file

@ -210,6 +210,8 @@ void DivPlatformPCSpeaker::acquire_unfilt(blip_buffer_t** bb, size_t off, size_t
}
out=(posToggle && !isMuted[0])?32767:0;
blip_add_delta(bb[0],off,out-oldOut);
oscBuf->data[oscBuf->needle++]=oscBufPos;
oscBuf->data[oscBuf->needle++]=out;
oldOut=out;
if (freq>=1) {
size_t boff=off;
@ -222,6 +224,7 @@ void DivPlatformPCSpeaker::acquire_unfilt(blip_buffer_t** bb, size_t off, size_t
i-=timeToNextToggle;
boff+=timeToNextToggle;
pos-=timeToNextToggle;
oscBufPos+=timeToNextToggle;
if (pos<=0) {
pos=freq1;
}
@ -234,6 +237,8 @@ void DivPlatformPCSpeaker::acquire_unfilt(blip_buffer_t** bb, size_t off, size_t
}
out=(posToggle && !isMuted[0])?32767:0;
blip_add_delta(bb[0],boff,out-oldOut);
oscBuf->data[oscBuf->needle++]=oscBufPos;
oscBuf->data[oscBuf->needle++]=out;
oldOut=out;
}
}
@ -641,6 +646,10 @@ bool DivPlatformPCSpeaker::hasAcquireDirect() {
return (speakerType==0 || speakerType==3);
}
bool DivPlatformPCSpeaker::isOscBufPositional() {
return (speakerType==0 || speakerType==3);
}
void DivPlatformPCSpeaker::setFlags(const DivConfig& flags) {
switch (flags.getInt("clockSel",0)) {
case 1: // PC-98
@ -705,6 +714,7 @@ int DivPlatformPCSpeaker::init(DivEngine* p, int channels, int sugRate, const Di
for (int i=0; i<1; i++) {
isMuted[i]=false;
}
oscBufPos=0;
oscBuf=new DivDispatchOscBuffer;
setFlags(flags);

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

@ -88,6 +88,7 @@ class DivPlatformPCSpeaker: public DivDispatch {
void muteChannel(int ch, bool mute);
bool keyOffAffectsArp(int ch);
bool hasAcquireDirect();
bool isOscBufPositional();
void setFlags(const DivConfig& flags);
void notifyInsDeletion(void* ins);
void notifyPlaybackStop();