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Add dummy sample for reduce phase accumulator wraparound related issue

This commit is contained in:
cam900 2022-04-30 02:06:16 +09:00
parent d0c55e4951
commit ee7633ba7a
1 changed files with 8 additions and 8 deletions
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16
src/engine/engine.cpp
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@ -618,23 +618,23 @@ void DivEngine::renderSamples() {
if (es5506Mem==NULL) es5506Mem=new signed short[16777216/sizeof(short)]; // 2Mword * 4 banks
memset(es5506Mem,0,16777216);
memPos=0;
memPos=128;
for (int i=0; i<song.sampleLen; i++) {
DivSample* s=song.sample[i];
unsigned int length=s->length16;
// fit sample size to single bank size
if (length>2097152*sizeof(short)) {
length=2097152*sizeof(short);
if (length>(2097152-64)*sizeof(short)) {
length=(2097152-64)*sizeof(short);
}
if ((memPos&0xc00000)!=((memPos+length)&0xc00000)) {
memPos=(memPos+0x3fffff)&0xc00000;
if ((memPos&0xc00000)!=((memPos+length+128)&0xc00000)) {
memPos=((memPos+0x3fffff)&0xc00000)+128;
}
if (memPos>=16777216) {
if (memPos>=(16777216-128)) {
logW("out of ES5506 memory for sample %d!",i);
break;
}
if (memPos+length>=16777216) {
memcpy(es5506Mem+(memPos/sizeof(short)),s->data16,16777216-memPos);
if (memPos+length>=(16777216-128)) {
memcpy(es5506Mem+(memPos/sizeof(short)),s->data16,16777216-memPos-128);
logW("out of ES5506 memory for sample %d!",i);
} else {
memcpy(es5506Mem+(memPos/sizeof(short)),s->data16,length);