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SegaPCM: what a mess

This commit is contained in:
tildearrow 2022-09-26 02:57:07 -05:00
parent 607e3c9339
commit 5f91f0b09c
1 changed files with 31 additions and 1 deletions
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32
src/engine/platform/segapcm.cpp
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@ -20,6 +20,7 @@
// TODO: new macro formula
#include "segapcm.h"
#include "../engine.h"
#include "../../ta-log.h"
#include <string.h>
#include <math.h>
@ -452,7 +453,36 @@ void DivPlatformSegaPCM::reset() {
}
void DivPlatformSegaPCM::renderSamples() {
// TODO: THIS MESS
size_t memPos=0;
for (int i=0; i<parent->song.sampleLen; i++) {
DivSample* sample=parent->getSample(i);
unsigned int alignedSize=(sample->getLoopEndPosition(DIV_SAMPLE_DEPTH_8BIT)+0xff)&(~0xff);
if (alignedSize>65536) alignedSize=65536;
if ((memPos&0xff0000)!=((memPos+alignedSize)&0xff0000)) {
memPos=(memPos+0xffff)&0xff0000;
}
logV("- sample %d will be at %x with length %x",i,memPos,alignedSize);
if (memPos>=16777216) break;
sampleOffSegaPCM[i]=memPos;
unsigned int readPos=0;
for (unsigned int j=0; j<alignedSize; j++) {
if (readPos>=(unsigned int)sample->getLoopEndPosition(DIV_SAMPLE_DEPTH_8BIT)) {
if (sample->isLoopable()) {
readPos=sample->getLoopStartPosition(DIV_SAMPLE_DEPTH_8BIT);
memPos++;
} else {
memPos++;
}
} else {
memPos++;
}
readPos++;
if (memPos>=16777216) break;
}
sample->loopOffP=readPos-sample->getLoopStartPosition(DIV_SAMPLE_DEPTH_8BIT);
if (memPos>=16777216) break;
}
}
void DivPlatformSegaPCM::setFlags(unsigned int flags) {