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more optimization

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as of now non-stereo sound chips are only processed once
This commit is contained in:
tildearrow 2021-12-06 16:51:18 -05:00
parent 6efcfc2e8a
commit d6fb6b0bb3
17 changed files with 66 additions and 41 deletions
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7
src/engine/platform/dummy.cpp
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@ -2,16 +2,15 @@
#include <stdio.h>
#include <math.h>
void DivPlatformDummy::acquire(short** buf, size_t start, size_t len) {
void DivPlatformDummy::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t i=start; i<start+len; i++) {
buf[0][i]=0;
bufL[i]=0;
for (unsigned char j=0; j<chans; j++) {
if (chan[j].active) {
buf[0][i]+=((chan[j].pos>=0x8000)?chan[j].vol:-chan[j].vol)*chan[j].amp;
bufL[i]+=((chan[j].pos>=0x8000)?chan[j].vol:-chan[j].vol)*chan[j].amp;
chan[j].pos+=chan[j].freq;
}
}
buf[1][i]=buf[0][i];
}
}