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start working on ADSR macro mode

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This commit is contained in:
tildearrow 2022-10-07 04:11:45 -05:00
parent 2cebd75236
commit a979bc244d
6 changed files with 436 additions and 207 deletions
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85
src/engine/macroInt.cpp
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@ -21,9 +21,20 @@
#include "instrument.h"
#include "engine.h"
#define ADSR_LOW source.val[0]
#define ADSR_HIGH source.val[1]
#define ADSR_AR source.val[2]
#define ADSR_HT source.val[3]
#define ADSR_DR source.val[4]
#define ADSR_SL source.val[5]
#define ADSR_ST source.val[6]
#define ADSR_SR source.val[7]
#define ADSR_RR source.val[8]
void DivMacroStruct::prepare(DivInstrumentMacro& source, DivEngine* e) {
has=had=actualHad=will=true;
mode=source.mode;
type=(source.open>>1)&3;
linger=(source.name=="vol" && e->song.volMacroLinger);
}
@ -53,24 +64,70 @@ void DivMacroStruct::doMacro(DivInstrumentMacro& source, bool released, bool tic
}
actualHad=has;
had=actualHad;
if (has) {
lastPos=pos;
val=source.val[pos++];
if (pos>source.rel && !released) {
if (source.loop<source.len && source.loop<source.rel) {
pos=source.loop;
} else {
pos--;
if (type==0) { // sequence
lastPos=pos;
val=source.val[pos++];
if (pos>source.rel && !released) {
if (source.loop<source.len && source.loop<source.rel) {
pos=source.loop;
} else {
pos--;
}
}
if (pos>=source.len) {
if (source.loop<source.len && (source.loop>=source.rel || source.rel>=source.len)) {
pos=source.loop;
} else if (linger) {
pos--;
} else {
has=false;
}
}
}
if (pos>=source.len) {
if (source.loop<source.len && (source.loop>=source.rel || source.rel>=source.len)) {
pos=source.loop;
} else if (linger) {
pos--;
} else {
has=false;
if (type==1 || type==3) { // ADSR
if (released && lastPos<3) lastPos=3;
switch (lastPos) {
case 0: // attack
pos+=ADSR_AR;
if (pos>255) {
pos=255;
lastPos=1;
delay=ADSR_HT;
}
break;
case 1: // decay
pos-=ADSR_DR;
if (pos<=ADSR_SL) {
pos=ADSR_SL;
lastPos=2;
delay=ADSR_ST;
}
break;
case 2: // sustain
pos-=ADSR_SR;
if (pos<0) {
pos=0;
lastPos=4;
}
break;
case 3: // release
pos-=ADSR_RR;
if (pos<0) {
pos=0;
lastPos=4;
}
break;
case 4: // end
pos=0;
if (!linger) has=false;
break;
}
val=ADSR_LOW+((pos+(ADSR_HIGH-ADSR_LOW)*pos)>>8);
}
if (type==2 || type==3) { // LFO
}
}
}