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Simplified clock

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This commit is contained in:
Miika Alonen
2023-09-02 23:50:40 +03:00
parent 969a4c17c1
commit cee8c82c89
3 changed files with 12 additions and 33 deletions
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28
src/TransportProcessor.js
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@ -5,10 +5,6 @@ class TransportProcessor extends AudioWorkletProcessor {
this.port.addEventListener("message", this.handleMessage);
this.port.start();
this.started = false;
this.totalPausedTime = 0;
this.lastPausedTime = 0;
this.startedAgainTime = 0;
this.wasStopped = false;
this.bpm = 120;
this.ppqn = 48;
this.currentPulsePosition = 0;
@ -21,17 +17,11 @@ class TransportProcessor extends AudioWorkletProcessor {
this.started = true;
} else if(message.data === "pause") {
this.started = false;
if(this.lastPausedTime === 0) {
this.lastPausedTime = currentTime;
}
} else if(message.data === "stop") {
this.started = false;
this.totalPausedTime = 0;
this.lastPausedTime = 0;
this.wasStopped = true;
this.currentPulsePosition = 0;
} else if(message.data.type === 'bpm') {
this.bpm = message.data.value;
this.currentPulsePosition = 0;
} else if(message.data.type === 'ppqn') {
this.ppqn = message.data.value;
}
@ -39,23 +29,11 @@ class TransportProcessor extends AudioWorkletProcessor {
process(inputs, outputs, parameters) {
if (this.started) {
if(this.lastPausedTime>0) {
const pausedTime = currentTime-this.lastPausedTime;
this.totalPausedTime += pausedTime;
this.lastPausedTime = 0;
}
if(this.wasStopped) {
this.startedAgainTime = currentTime;
this.wasStopped = false;
}
const logicalTime = currentTime-this.totalPausedTime-this.startedAgainTime;
const beatNumber = logicalTime / (60 / this.bpm);
const beatNumber = currentTime / (60 / this.bpm);
const currentPulsePosition = Math.ceil(beatNumber * this.ppqn);
if(currentPulsePosition > this.currentPulsePosition) {
this.currentPulsePosition = currentPulsePosition;
this.port.postMessage({ type: "bang", logicalTime });
this.port.postMessage({ type: "bang" });
}
}
return true;