135 lines
4.1 KiB
JavaScript
135 lines
4.1 KiB
JavaScript
class voice{
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constructor(wave,freq,volume=1){
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this.audioCtx = new (window.AudioContext || window.webkitAudioContext)();
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this.info={wave:wave,freq:freq}
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this.playing=false;
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this.myArrayBuffer=this.audioCtx.createBuffer(
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1,
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this.audioCtx.sampleRate,
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this.audioCtx.sampleRate,
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);
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this.gainNode = this.audioCtx.createGain();
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this.gainNode.gain.value=volume;
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this.gainNode.connect(this.audioCtx.destination);
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this.buffer=this.myArrayBuffer.getChannelData(0);
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this.source = this.audioCtx.createBufferSource();
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this.source.buffer = this.myArrayBuffer;
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this.source.loop=true;
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this.source.start();
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this.updateWave(freq);
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}
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get wave(){
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return this.info.wave;
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}
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get freq(){
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return this.info.freq;
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}
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set wave(wave){
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this.info.wave=wave;
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this.updateWave()
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}
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set freq(freq){
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this.info.freq=freq;
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this.updateWave()
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}
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updateWave(){
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const func=this.waveFucnion();
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for (let i = 0; i < this.buffer.length; i++) {
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this.buffer[i]=func(i/this.audioCtx.sampleRate,this.freq);
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}
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}
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waveFucnion(){
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if(typeof this.wave === 'function'){
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return this.wave;
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}
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switch(this.wave){
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case "sin":
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return (t,freq)=>{
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return Math.sin(t*Math.PI*2*freq);
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}
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case "triangle":
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return (t,freq)=>{
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return Math.abs((4*t*freq)%4-2)-1;
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}
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case "sawtooth":
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return (t,freq)=>{
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return ((t*freq)%1)*2-1;
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}
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case "square":
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return (t,freq)=>{
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return (t*freq)%2<1?1:-1;
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}
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case "white":
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return (t,freq)=>{
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return Math.random()*2-1;
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}
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case "noise":
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return (t,freq)=>{
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return 0;
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}
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}
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}
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play(){
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if(this.playing){
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return;
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}
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this.source.connect(this.gainNode);
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this.playing=true;
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}
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stop(){
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if(this.playing){
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this.source.disconnect();
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this.playing=false;
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}
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}
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static noises(noise){
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switch(noise){
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case "three":{
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const voicy=new voice("sin",800);
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voicy.play();
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setTimeout(_=>{voicy.freq=1000},50);
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setTimeout(_=>{voicy.freq=1300},100);
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setTimeout(_=>{voicy.stop()},150);
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break;
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}
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case "zip":{
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const voicy=new voice((t,freq)=>{
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return Math.sin(((t+2)**(Math.cos(t*4)))*Math.PI*2*freq);
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},700);
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voicy.play();
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setTimeout(_=>{voicy.stop()},150);
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break;
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}
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case "square":{
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const voicy=new voice("square",600,.4);
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voicy.play()
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setTimeout(_=>{voicy.freq=800},50);
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setTimeout(_=>{voicy.freq=1000},100);
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setTimeout(_=>{voicy.stop()},150);
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break;
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}
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case "beep":{
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const voicy=new voice("sin",800);
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voicy.play();
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setTimeout(_=>{voicy.stop()},50);
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setTimeout(_=>{voicy.play();},100);
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setTimeout(_=>{voicy.stop()},150);
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break;
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}
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}
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}
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static get sounds(){
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return ["three","zip","square","beep"];
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}
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static setNotificationSound(sound){
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let userinfos=getBulkInfo();
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userinfos.preferances.notisound=sound;
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localStorage.setItem("userinfos",JSON.stringify(userinfos));
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}
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static getNotificationSound(){
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let userinfos=getBulkInfo();
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return userinfos.preferances.notisound;
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}
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}
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