Vudio NPM | npm.io

vudio

Visualization audio using AudioContext and Canvas

Many visual effects:

多種視覺效果

Features：

Support effect and custom styles
Animation based on Canvas and requestAnimationFrame

Install and use

npm i vudio --save
# or install by yarn
yarn add vudio

import Vudio from 'vudio'

using CDN:

<script src="https://unpkg.com/vudio@2.1.1/umd/vudio.js"></script>

Use Vudio

var vudio = new Vudio(HTMLAudioElement | MediaStream, HTMLCanvasElement, [option]);
vudio.dance();

Examples

<canvas width="256px" height="100px" id="canvas"></canvas>
<audio src="./path/to/audio.mp3" controls id="audio"></audio>
<script src="path/to/vudio.js"></script>

Since AudioContext can NOT use CORS resource, so make sure you have fully control of audio resource

var audioObj = document.querySelector('#audio');
var canvasObj = document.querySelector('#canvas');
var vudio = new Vudio(audioObj, canvasObj, {
    effect : 'waveform', // waveform, circlewave, circlebar, lighting (4 visual effect)
    accuracy : 128, // number of freqBar, must be pow of 2.
    width : 256, // canvas width
    height : 100, // canvas height
    waveform : {
        maxHeight : 80, // max waveform bar height
        minHeight : 1, // min waveform bar height
        spacing: 1, // space between bars
        color : '#f00', // string | [string] color or waveform bars
        shadowBlur : 0, // blur of bars
        shadowColor : '#f00', 
        fadeSide : true, // fading tail
        horizontalAlign : 'center', // left/center/right, only effective in 'waveform'/'lighting'
        verticalAlign: 'middle' // top/middle/bottom, only effective in 'waveform'/'lighting'
    }
});

vudio.dance();

// pause as you wish
vudio.pause();

// change option reactively.
vudio.setOption({
    waveform : {
        color : '#06f',
        verticalAlign: 'bottom'
    }
});

Online Demo: https://alex2wong.github.io/vudio/