ehpersonal38
129 lines
3.2 KiB
PHP
129 lines
3.2 KiB
PHP
<script>
|
|
// CREDITS: https://codepen.io/jakealbaugh/pen/jvQweW
|
|
|
|
// UPDATE: there is a problem in chrome with starting audio context
|
|
// before a user gesture. This fixes it.
|
|
var started = null;
|
|
var player = null;
|
|
const ctx = null;
|
|
window.onload = function(){
|
|
var audioelement = window.parent.document.getElementsByTagName("audio")[0];
|
|
if (typeof(audioelement) != 'undefined') {
|
|
|
|
document.getElementById('player').remove();
|
|
|
|
player = audioelement;
|
|
} else {
|
|
player = document.getElementById('player');
|
|
}
|
|
if (started) return;
|
|
started = true;
|
|
initialize();
|
|
};
|
|
|
|
function applyText(text) {
|
|
CTX.fillStyle = 'white';
|
|
CTX.font = '25px Roboto Flex';
|
|
CTX.fillText(text, 1200, 200);
|
|
CTX.fillStyle = 'hsl(280, 100%, 10%)';
|
|
}
|
|
|
|
var previous_detection_identifier = null;
|
|
function loadDetectionIfNewExists() {
|
|
const xhttp = new XMLHttpRequest();
|
|
xhttp.onload = function() {
|
|
// if there's a new detection that needs to be updated to the page
|
|
if(this.responseText.length > 0 && !this.responseText.includes("Database")) {
|
|
if(previous_detection_identifier != null){
|
|
applyText(this.responseText.split(",")[0].replace("_"," "));
|
|
}
|
|
previous_detection_identifier = this.responseText.split(",")[1];
|
|
}
|
|
}
|
|
xhttp.open("GET", "overview.php?ajax_detections=true&previous_detection_identifier="+previous_detection_identifier+"&only_name=true", true);
|
|
xhttp.send();
|
|
}
|
|
|
|
window.setInterval(function(){
|
|
loadDetectionIfNewExists();
|
|
}, 5000);
|
|
|
|
function initialize() {
|
|
document.body.querySelector('h1').remove();
|
|
const CVS = document.body.querySelector('canvas');
|
|
CTX = CVS.getContext('2d');
|
|
const W = CVS.width = window.innerWidth;
|
|
const H = CVS.height = window.innerHeight;
|
|
|
|
const ACTX = new AudioContext();
|
|
const ANALYSER = ACTX.createAnalyser();
|
|
|
|
ANALYSER.fftSize = 2048;
|
|
|
|
process();
|
|
|
|
function process() {
|
|
const SOURCE = ACTX.createMediaElementSource(player);
|
|
SOURCE.connect(ANALYSER);
|
|
SOURCE.connect(ACTX.destination)
|
|
const DATA = new Uint8Array(ANALYSER.frequencyBinCount);
|
|
const LEN = DATA.length;
|
|
const h = (H / LEN + 0.9);
|
|
const x = W - 1;
|
|
CTX.fillStyle = 'hsl(280, 100%, 10%)';
|
|
CTX.fillRect(0, 0, W, H);
|
|
|
|
loop();
|
|
|
|
function loop() {
|
|
window.requestAnimationFrame(loop);
|
|
let imgData = CTX.getImageData(1, 0, W - 1, H);
|
|
|
|
CTX.fillRect(0, 0, W, H);
|
|
CTX.putImageData(imgData, 0, 0);
|
|
ANALYSER.getByteFrequencyData(DATA);
|
|
for (let i = 0; i < LEN; i++) {
|
|
let rat = DATA[i] / 196 ;
|
|
let hue = Math.round((rat * 120) + 280 % 360);
|
|
let sat = '100%';
|
|
let lit = 10 + (70 * rat) + '%';
|
|
CTX.beginPath();
|
|
CTX.strokeStyle = `hsl(${hue}, ${sat}, ${lit})`;
|
|
CTX.moveTo(x, H - (i * h));
|
|
CTX.lineTo(x, H - (i * h + h));
|
|
CTX.stroke();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
</script>
|
|
<style>
|
|
html, body {
|
|
height: 100%;
|
|
}
|
|
|
|
canvas {
|
|
display: block;
|
|
height: 85%;
|
|
width: 100%;
|
|
}
|
|
|
|
h1 {
|
|
position: absolute;
|
|
top: 50%;
|
|
left: 50%;
|
|
transform: translate(-50%, -50%);
|
|
margin: 0;
|
|
}
|
|
</style>
|
|
|
|
|
|
<audio style="display:none" controls="" crossorigin="anonymous" id='player' autoplay=""><source src="/stream"></audio>
|
|
<h1>Loading...</h1>
|
|
<canvas></canvas>
|
|
|
|
<br>
|
|
<span style="display:inline-block;">hi</span>
|
|
|