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sample system rewrite! **PLEASE READ**

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this commit mostly rewrites the sample system.
as of now samples can be ADPCM, 8-bit, BRR or 16-bit
or something...

consider this VERY EXPERIMENTAL.
if you find any issues REPORT THEM immediately.

it's nearly 4am...
This commit is contained in:
tildearrow 2022-02-24 03:57:45 -05:00
parent 3542229448
commit 1e98f0c4a1
19 changed files with 545 additions and 390 deletions
Download patch file Download diff file Expand all files Collapse all files

47
src/engine/platform/segapcm.cpp
View file

@ -44,22 +44,17 @@ void DivPlatformSegaPCM::acquire(short* bufL, short* bufR, size_t start, size_t
for (int i=0; i<16; i++) {
if (chan[i].pcm.sample>=0 && chan[i].pcm.sample<parent->song.sampleLen) {
DivSample* s=parent->song.sample[chan[i].pcm.sample];
if (s->rendLength<=0) {
if (s->samples<=0) {
chan[i].pcm.sample=-1;
continue;
}
if (!isMuted[i]) {
if (s->depth==8) {
pcmL+=(s->rendData[chan[i].pcm.pos>>8]*chan[i].chVolL);
pcmR+=(s->rendData[chan[i].pcm.pos>>8]*chan[i].chVolR);
} else {
pcmL+=(s->rendData[chan[i].pcm.pos>>8]*chan[i].chVolL)>>8;
pcmR+=(s->rendData[chan[i].pcm.pos>>8]*chan[i].chVolR)>>8;
}
pcmL+=(s->data8[chan[i].pcm.pos>>8]*chan[i].chVolL);
pcmR+=(s->data8[chan[i].pcm.pos>>8]*chan[i].chVolR);
}
chan[i].pcm.pos+=chan[i].pcm.freq;
if (chan[i].pcm.pos>=(s->rendLength<<8)) {
if (s->loopStart>=0 && s->loopStart<=(int)s->rendLength) {
if (chan[i].pcm.pos>=(s->samples<<8)) {
if (s->loopStart>=0 && s->loopStart<=(int)s->samples) {
chan[i].pcm.pos=s->loopStart<<8;
} else {
chan[i].pcm.sample=-1;
@ -152,17 +147,17 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
chan[c.chan].furnacePCM=true;
if (dumpWrites) { // Sega PCM writes
DivSample* s=parent->song.sample[chan[c.chan].pcm.sample];
addWrite(0x10086+(c.chan<<3),3+((s->rendOffP>>16)<<3));
addWrite(0x10084+(c.chan<<3),(s->rendOffP)&0xff);
addWrite(0x10085+(c.chan<<3),(s->rendOffP>>8)&0xff);
addWrite(0x10006+(c.chan<<3),MIN(255,((s->rendOffP&0xffff)+s->rendLength-1)>>8));
if (s->loopStart<0 || s->loopStart>=(int)s->rendLength) {
addWrite(0x10086+(c.chan<<3),2+((s->rendOffP>>16)<<3));
addWrite(0x10086+(c.chan<<3),3+((s->offSegaPCM>>16)<<3));
addWrite(0x10084+(c.chan<<3),(s->offSegaPCM)&0xff);
addWrite(0x10085+(c.chan<<3),(s->offSegaPCM>>8)&0xff);
addWrite(0x10006+(c.chan<<3),MIN(255,((s->offSegaPCM&0xffff)+s->length8-1)>>8));
if (s->loopStart<0 || s->loopStart>=(int)s->length8) {
addWrite(0x10086+(c.chan<<3),2+((s->offSegaPCM>>16)<<3));
} else {
int loopPos=(s->rendOffP&0xffff)+s->loopStart+s->loopOffP;
int loopPos=(s->offSegaPCM&0xffff)+s->loopStart+s->loopOffP;
addWrite(0x10004+(c.chan<<3),loopPos&0xff);
addWrite(0x10005+(c.chan<<3),(loopPos>>8)&0xff);
addWrite(0x10086+(c.chan<<3),((s->rendOffP>>16)<<3));
addWrite(0x10086+(c.chan<<3),((s->offSegaPCM>>16)<<3));
}
}
} else {
@ -182,17 +177,17 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
chan[c.chan].furnacePCM=false;
if (dumpWrites) { // Sega PCM writes
DivSample* s=parent->song.sample[chan[c.chan].pcm.sample];
addWrite(0x10086+(c.chan<<3),3+((s->rendOffP>>16)<<3));
addWrite(0x10084+(c.chan<<3),(s->rendOffP)&0xff);
addWrite(0x10085+(c.chan<<3),(s->rendOffP>>8)&0xff);
addWrite(0x10006+(c.chan<<3),MIN(255,((s->rendOffP&0xffff)+s->rendLength-1)>>8));
if (s->loopStart<0 || s->loopStart>=(int)s->rendLength) {
addWrite(0x10086+(c.chan<<3),2+((s->rendOffP>>16)<<3));
addWrite(0x10086+(c.chan<<3),3+((s->offSegaPCM>>16)<<3));
addWrite(0x10084+(c.chan<<3),(s->offSegaPCM)&0xff);
addWrite(0x10085+(c.chan<<3),(s->offSegaPCM>>8)&0xff);
addWrite(0x10006+(c.chan<<3),MIN(255,((s->offSegaPCM&0xffff)+s->length8-1)>>8));
if (s->loopStart<0 || s->loopStart>=(int)s->length8) {
addWrite(0x10086+(c.chan<<3),2+((s->offSegaPCM>>16)<<3));
} else {
int loopPos=(s->rendOffP&0xffff)+s->loopStart+s->loopOffP;
int loopPos=(s->offSegaPCM&0xffff)+s->loopStart+s->loopOffP;
addWrite(0x10004+(c.chan<<3),loopPos&0xff);
addWrite(0x10005+(c.chan<<3),(loopPos>>8)&0xff);
addWrite(0x10086+(c.chan<<3),((s->rendOffP>>16)<<3));
addWrite(0x10086+(c.chan<<3),((s->offSegaPCM>>16)<<3));
}
addWrite(0x10007+(c.chan<<3),chan[c.chan].pcm.freq);
}