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dev154 - NES: DPCM mode is now default

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tildearrow 2023-05-05 00:17:59 -05:00
parent f42c689f97
commit bd53c57658
7 changed files with 42 additions and 8 deletions
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8
src/engine/sample.cpp
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@ -485,9 +485,9 @@ bool DivSample::initInternal(DivSampleDepth d, int count) {
break;
case DIV_SAMPLE_DEPTH_1BIT_DPCM: // DPCM
if (dataDPCM!=NULL) delete[] dataDPCM;
lengthDPCM=(count+7)/8;
lengthDPCM=1+((((count+7)/8)+15)&(~15));
dataDPCM=new unsigned char[lengthDPCM];
memset(dataDPCM,0,lengthDPCM);
memset(dataDPCM,0xaa,lengthDPCM);
break;
case DIV_SAMPLE_DEPTH_YMZ_ADPCM: // YMZ ADPCM
if (dataZ!=NULL) delete[] dataZ;
@ -1092,12 +1092,14 @@ void DivSample::render(unsigned int formatMask) {
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_1BIT_DPCM)) { // DPCM
if (!initInternal(DIV_SAMPLE_DEPTH_1BIT_DPCM,samples)) return;
int accum=63;
int next=63;
for (unsigned int i=0; i<samples; i++) {
int next=((unsigned short)(data16[i]^0x8000))>>9;
next=((unsigned short)(data16[i]^0x8000))>>9;
if (next>accum) {
dataDPCM[i>>3]|=1<<(i&7);
accum++;
} else {
dataDPCM[i>>3]&=~(1<<(i&7));
accum--;
}
if (accum<0) accum=0;