CalvinBackup/binaural-beats-generator
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Update content.js

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pliny
2023-08-12 17:36:50 -07:00
committed by GitHub
parent b409df6072
commit 94af520c73
1 changed files with 15 additions and 18 deletions
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33
content.js
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@@ -1,20 +1,15 @@
let audioContext;
let oscillatorLeft;
let oscillatorRight;
let gainNode;
let audioContext = new (window.AudioContext || window.webkitAudioContext)();
let oscillatorLeft, oscillatorRight, gainNode;
let isPlaying = false;
function startBinauralBeats(frequency, delta, volume) {
if (audioContext) {
audioContext.close();
}
audioContext = new AudioContext();
oscillatorLeft = audioContext.createOscillator();
oscillatorRight = audioContext.createOscillator();
gainNode = audioContext.createGain();
oscillatorLeft.type = 'sine';
oscillatorRight.type = 'sine';
oscillatorLeft.frequency.setValueAtTime(frequency, audioContext.currentTime);
oscillatorRight.frequency.setValueAtTime(frequency + delta, audioContext.currentTime);
@@ -31,12 +26,8 @@ function startBinauralBeats(frequency, delta, volume) {
}
function stopBinauralBeats() {
if (oscillatorLeft) {
oscillatorLeft.stop();
}
if (oscillatorRight) {
oscillatorRight.stop();
}
oscillatorLeft.stop();
oscillatorRight.stop();
isPlaying = false;
}
@@ -44,10 +35,16 @@ chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
if (message.action === 'togglePlayPause') {
if (isPlaying) {
stopBinauralBeats();
sendResponse({ status: 'paused' });
sendResponse({status: 'stopped'});
} else {
startBinauralBeats(message.frequency, message.delta, message.volume);
sendResponse({ status: 'playing' });
sendResponse({status: 'playing'});
}
} else if (message.action === 'updateAudio') {
if (isPlaying) {
oscillatorLeft.frequency.setValueAtTime(message.frequency, audioContext.currentTime);
oscillatorRight.frequency.setValueAtTime(message.frequency + message.delta, audioContext.currentTime);
gainNode.gain.setValueAtTime(message.volume, audioContext.currentTime);
}
}
});