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Attack/decay/sustain/release envelope with modulation inputs and build in vca. "On" button turn envelope on. When "off" input is passed through with no gate.
Inlets
frac32buffer i
bool32.risingfalling gate
Outlets
frac32buffer o
Parameters
frac32.s.map a
frac32.s.map d
frac32.s.map r
frac32.u.map s
bool32.tgl on
int32_t prev;
int32_t step;
int8_t stage;
int ntrig;
int32_t val;
int32_t Loopval;stage = 0;
ntrig = 0;
val = 0;// vca
step = (Loopval - prev) >> 4;
int32_t i = prev;
prev = Loopval;
// env
if ((inlet_g > 0) && !ntrig) {
stage = 1;
ntrig = 1;
}
if (!(inlet_g > 0) && ntrig) {
stage = 0;
ntrig = 0;
}
if (stage == 0) {
int32_t r1;
int32_t r2;
MTOF(-param_r, r1);
r1 = 0x7FFFFFFF - (r1 >> 2);
val = ___SMMUL(val, r1) << 1;
} else if (stage == 1) {
int32_t a;
MTOF(-param_a, a);
a = a >> 2;
val = val + a;
if (val < 0) {
val = 0x7FFFFFFF;
stage = 2;
}
} else if (stage == 2) {
int32_t s = __USAT(param_s, 27);
int32_t d;
MTOF(-param_d, d);
d = 0x7FFFFFFF - (d >> 2);
val = (s << 4) + (___SMMUL(val - (s << 4), d) << 1);
}
Loopval = val >> 4;// Env off
outlet_o = inlet_i;
// Env on
if (param_on) {
outlet_o = ___SMMUL(inlet_i, i) << 5;
i += step;
}