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QSound: ADPCM, part 1

This commit is contained in:
tildearrow 2022-12-01 19:21:02 -05:00
parent 8eecdd4b93
commit d3dedd020f
1 changed files with 10 additions and 5 deletions
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15
src/engine/platform/qsound.cpp
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@ -397,9 +397,11 @@ void DivPlatformQSound::tick(bool sysTick) {
rWrite(q1_reg_map[Q1V_START][i], qsound_addr);
rWrite(q1_reg_map[Q1V_PHASE][i], 0x8000);
} else {
rWrite(Q1A_KEYON+(i-16),0);
rWrite(q1a_bank_map[i-16], qsound_bank);
rWrite(q1a_end_map[i-16], qsound_end);
rWrite(q1a_start_map[i-16], qsound_addr);
rWrite(Q1A_KEYON+(i-16),1);
}
//logV("ch %d bank=%04x, addr=%04x, end=%04x, loop=%04x!",i,qsound_bank,qsound_addr,qsound_end,qsound_loop);
// Write sample address. Enable volume
@ -423,6 +425,7 @@ void DivPlatformQSound::tick(bool sysTick) {
rWrite(q1_reg_map[Q1V_FREQ][i],0);
} else {
rWrite(q1a_vol_map[i-16],0);
rWrite(Q1A_KEYON+(i-16),0);
}
} else if (chan[i].active) {
//logV("ch %d frequency set to %04x, off=%f, note=%d, %04x!",i,chan[i].freq,off,chan[i].note,QS_NOTE_FREQUENCY(chan[i].note));
@ -751,6 +754,8 @@ void DivPlatformQSound::renderSamples(int sysID) {
}
sampleMemLen=memPos+256;
memPos=(memPos+0xffff)&0xff0000;
for (int i=0; i<parent->song.sampleLen; i++) {
DivSample* s=parent->song.sample[i];
if (!s->renderOn[1][sysID]) {
@ -759,8 +764,8 @@ void DivPlatformQSound::renderSamples(int sysID) {
}
int length=s->lengthQSoundA;
if (length>65536-16) {
length=65536-16;
if (length>65536) {
length=65536;
}
if ((memPos&0xff0000)!=((memPos+length)&0xff0000)) {
memPos=(memPos+0xffff)&0xff0000;
@ -771,16 +776,16 @@ void DivPlatformQSound::renderSamples(int sysID) {
}
if (memPos+length>=getSampleMemCapacity()) {
for (unsigned int i=0; i<getSampleMemCapacity()-(memPos+length); i++) {
sampleMem[(memPos+i)^0x8000]=s->dataQSoundA[i];
sampleMem[(memPos+i)]=s->dataQSoundA[i];
}
logW("out of QSound ADPCM memory for sample %d!",i);
} else {
for (int i=0; i<length; i++) {
sampleMem[(memPos+i)^0x8000]=s->dataQSoundA[i];
sampleMem[(memPos+i)]=s->dataQSoundA[i];
}
sampleLoaded[i]=true;
}
offBS[i]=memPos^0x8000;
offBS[i]=memPos;
memPos+=length+16;
}
sampleMemLenBS=memPos+256;