Audiolib.js

Developer
Томаш Хамлай
Size
4,063 Kb
Views
14,168
  1. Audiolib.js Previews
  2. Audiolib.js HTML Codes
  3. Audiolib.js CSS Codes

How do I make an audiolib.js?

What is a audiolib.js? How do you make a audiolib.js? This script and codes were developed by Томаш Хамлай on 11 November 2022, Friday.

Audiolib.js Previews
IQ Test

Audiolib.js - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>audiolib.js</title> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body> <style>	html, body {	height: 100%;	}	canvas {	height: 100%;	position: absolute;	top: 0;	right: 0;	bottom: 0;	left: 0;	margin: auto;	}	.transculent {	opacity: 0;	}	button {	position: absolute;	font-size: 3em;	top: 50%;	left: 50%;	height: 25%;	transform: translate(-50%, -50%);	width: 50%;	}
</style>
<script>
// Start off by initializing a new context.
context = new (window.AudioContext || window.webkitAudioContext)();
if (!context.createGain) context.createGain = context.createGainNode;
if (!context.createDelay) context.createDelay = context.createDelayNode;
if (!context.createScriptProcessor) context.createScriptProcessor = context.createJavaScriptNode;
// shim layer with setTimeout fallback
window.requestAnimFrame = (function(){
return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function( callback ){ window.setTimeout(callback, 1000 / 60);
};
})();
function playSound(buffer, time) { var source = context.createBufferSource(); source.buffer = buffer; source.connect(context.destination); source[source.start ? 'start' : 'noteOn'](time);
}
function loadSounds(obj, soundMap, callback) { // Array-ify var names = []; var paths = []; for (var name in soundMap) { var path = soundMap[name]; names.push(name); paths.push(path); } bufferLoader = new BufferLoader(context, paths, function(bufferList) { for (var i = 0; i < bufferList.length; i++) { var buffer = bufferList[i]; var name = names[i]; obj[name] = buffer; } if (callback) { callback(); } }); bufferLoader.load();
}
function BufferLoader(context, urlList, callback) { this.context = context; this.urlList = urlList; this.onload = callback; this.bufferList = new Array(); this.loadCount = 0;
}
BufferLoader.prototype.loadBuffer = function(url, index) { // Load buffer asynchronously var request = new XMLHttpRequest(); request.open("GET", 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/1715/the_xx_-_intro.mp3', true); request.responseType = "arraybuffer"; var loader = this; request.onload = function() { // Asynchronously decode the audio file data in request.response loader.context.decodeAudioData( request.response, function(buffer) { if (!buffer) { alert('error decoding file data: ' + url); return; } loader.bufferList[index] = buffer; if (++loader.loadCount == loader.urlList.length) loader.onload(loader.bufferList); }, function(error) { console.error('decodeAudioData error', error); } ); } request.onerror = function() { alert('BufferLoader: XHR error'); } request.send();
};
BufferLoader.prototype.load = function() { for (var i = 0; i < this.urlList.length; ++i) this.loadBuffer(this.urlList[i], i);
};
//Create an AudioContext instance for this sound
var audioContext = new (window.AudioContext || window.webkitAudioContext)();
// Create a buffer for the incoming sound content
var source = audioContext.createBufferSource();
// Create the XHR which will grab the audio contents
var request = new XMLHttpRequest();
// Set the audio file src here
request.open('GET', 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/1715/the_xx_-_intro.mp3', true);
// Setting the responseType to arraybuffer sets up the audio decoding
request.responseType = 'arraybuffer';
request.onload = function() { // Decode the audio once the require is complete audioContext.decodeAudioData(request.response, function(buffer) { source.buffer = buffer; // Connect the audio to source (multiple audio buffers can be connected!) // source.connect(audioContext.destination); // Simple setting for the buffer source.loop = true; // Play the sound! source.start(0); }, function(e) { console.log('Audio error! ', e); });
}
// Send the request which kicks off
request.send();
var WIDTH = 640;
var HEIGHT = 360;
// Interesting parameters to tweak!
var SMOOTHING = 0.8;
var FFT_SIZE = 2048;
function VisualizerSample() { this.analyser = context.createAnalyser(); this.analyser.connect(context.destination); this.analyser.minDecibels = -140; this.analyser.maxDecibels = 0; loadSounds(this, { buffer: source.buffer }, onLoaded); this.freqs = new Uint8Array(this.analyser.frequencyBinCount); this.times = new Uint8Array(this.analyser.frequencyBinCount); function onLoaded() { var button = document.querySelector('button'); button.removeAttribute('disabled'); button.innerHTML = 'Play/pause'; }; this.isPlaying = false; this.startTime = 0; this.startOffset = 0;
}
// Toggle playback
VisualizerSample.prototype.togglePlayback = function() { if (this.isPlaying) { // Stop playback this.source[this.source.stop ? 'stop': 'noteOff'](0); this.startOffset += context.currentTime - this.startTime; console.log('paused at', this.startOffset); // Save the position of the play head. } else { this.startTime = context.currentTime; console.log('started at', this.startOffset); this.source = context.createBufferSource(); // Connect graph this.source.connect(this.analyser); this.source.buffer = this.buffer; this.source.loop = true; // Start playback, but make sure we stay in bound of the buffer. this.source[this.source.start ? 'start' : 'noteOn'](0, this.startOffset % this.buffer.duration); // Start visualizer. requestAnimFrame(this.draw.bind(this)); } this.isPlaying = !this.isPlaying;
}
VisualizerSample.prototype.draw = function() { this.analyser.smoothingTimeConstant = SMOOTHING; this.analyser.fftSize = FFT_SIZE; // Get the frequency data from the currently playing music this.analyser.getByteFrequencyData(this.freqs); this.analyser.getByteTimeDomainData(this.times); var width = Math.floor(1/this.freqs.length, 10); var canvas = document.querySelector('canvas'); var drawContext = canvas.getContext('2d'); canvas.width = WIDTH; canvas.height = HEIGHT; // // Draw the frequency domain chart. for (var i = 0; i < this.analyser.frequencyBinCount; i++) { var value = this.freqs[i]; var percent = value / 256; var height = HEIGHT * percent; var offset = HEIGHT - height - 1; var barWidth = WIDTH/this.analyser.frequencyBinCount; var hue = i/this.analyser.frequencyBinCount * 360; drawContext.fillStyle = 'hsl(' + hue + ', 100%, 50%)'; drawContext.fillRect(i * barWidth, offset, barWidth, height); } // Draw the time domain chart. for (var i = 0; i < this.analyser.frequencyBinCount; i++) { var value = this.times[i]; var percent = value / 256; var height = HEIGHT * percent * 2; var offset = HEIGHT - height/2 - 1; var barWidth = WIDTH/this.analyser.frequencyBinCount; drawContext.fillStyle = 'white'; drawContext.fillRect(i * barWidth, offset, 1, 2); } if (this.isPlaying) { requestAnimFrame(this.draw.bind(this)); }
}
</script>
<canvas style="width: 100%;"></canvas>
<button id="toggle" style="display: block" disabled="true">Please wait, loading...</button>
<script>
var sample = new VisualizerSample();
document.querySelector('button').addEventListener('click', function() { sample.togglePlayback();	console.log(this.className);	if(this.className === '') {	this.className += 'transculent';	} else {	this.className = '';	}
});
</script>
</body>
</html>

Audiolib.js - Script Codes CSS Codes

canvas { background-color: #000;
}
Audiolib.js - Script Codes
Audiolib.js - Script Codes
Home Page Home
Developer Томаш Хамлай
Username TomashKhamlai
Uploaded November 11, 2022
Rating 3
Size 4,063 Kb
Views 14,168
Do you need developer help for Audiolib.js?

Find the perfect freelance services for your business! Fiverr's mission is to change how the world works together. Fiverr connects businesses with freelancers offering digital services in 500+ categories. Find Developer!

Томаш Хамлай (TomashKhamlai) Script Codes
Name
Penalty Calculator
SVG Mascing Stretching AR rounded
Jplayer
Firefox SVG Example
Calc.js
SVG Clipping Stretching
Nesting countersEdit
Calc2
SVG Clipping
SVG-button Responsive
Create amazing love letters with AI!

Jasper is the AI Content Generator that helps you and your team break through creative blocks to create amazing, original content 10X faster. Discover all the ways the Jasper AI Content Platform can help streamline your creative workflows. Start For Free!