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account for phase complete

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This commit is contained in:
Jade (Rose) Rowland 2023-12-20 15:24:14 -05:00
parent dec039ead3
commit 5671b40707
1 changed files with 6 additions and 4 deletions
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10
packages/superdough/helpers.mjs
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@ -4,7 +4,11 @@ import { clamp } from './util.mjs';
const setRelease = (param, phase, sustain, startTime, endTime, endValue, curve = 'linear') => {
const ctx = getAudioContext();
const ramp = curve === 'exponential' ? 'exponentialRampToValueAtTime' : 'linearRampToValueAtTime';
if (param.cancelAndHoldAtTime == null) {
// if the decay stage is complete before the note event is done, we don't need to do anything special
if (phase < startTime) {
param.setValueAtTime(sustain, startTime);
param[ramp](endValue, endTime);
} else if (param.cancelAndHoldAtTime == null) {
//this replicates cancelAndHoldAtTime behavior for Firefox
setTimeout(() => {
//sustain at current value
@ -15,9 +19,7 @@ const setRelease = (param, phase, sustain, startTime, endTime, endValue, curve =
param[ramp](endValue, endTime);
}, (startTime - ctx.currentTime) * 1000);
} else {
if (phase < startTime) {
param.setValueAtTime(sustain, startTime);
}
//stop the envelope, hold the value, and then set the release stage
param.cancelAndHoldAtTime(startTime);
param[ramp](endValue, endTime);
}