Effect
html+css+js local music player to visualize audio spectrum
foreword
I used swing to write a local music player before (as shown in the picture below), but the effect is hard to describe, the interface is ugly, and there are many functional bugs.
So I wrote it again in html later. In terms of interface style and function, it is much more beautiful and perfect than that written in swing.
Function
- Import music (done)
- Display List (Completed)
- List double-click to play (completed)
- List cycle, single cycle, random play (completed)
- Previous, Next, Play, Pause (Completed)
- Calculate music duration (completed)
- Music playback progress bar (completed)
- Click the progress bar, the music playback position jumps, and the progress bar position jumps accordingly (completed)
- Ring Spectrum (Completed)
Not much nonsense, just go to the code.
the code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>音乐播放器</title>
<style>
*{
margin: 0 auto;
}
body{
/*background-color: rgb(104,118,138);*/
background: url("img/bg.jpg");
background-position: center;
background-repeat: no-repeat;
background-attachment: fixed;
background-size:100%;
}
/* 设置滚动条的样式 */
::-webkit-scrollbar {
width:5px;
}
/* 滚动槽 */
::-webkit-scrollbar-track {
-webkit-box-shadow:inset 0 0 6px rgba(0,0,0,0.3);
border-radius:10px;
}
/* 滚动条滑块 */
::-webkit-scrollbar-thumb {
border-radius:10px;
background:rgba(0,0,0,0.1);
-webkit-box-shadow:inset 0 0 6px rgba(0,0,0,0.5);
}
::-webkit-scrollbar-thumb:window-inactive {
background:rgba(255,0,0,0.4);
}
.main{
position: relative;
top: 20px;
width: 520px;
height: 600px;
background:rgba(30,144,255,0.4);
box-shadow: 0 15px 50px rgb(0,0,0);
border-radius: 10px;
outline: 0;
}
.musicBox{
position: absolute;
width: 520px;
height: 40px;
line-height: 40px;
vertical-align: center;
}
.buttons{
position: absolute;
display: inline-block;
height:40px;
width: 40px;
cursor: pointer;
}
#fileBox{
left: 0px;
background: url("img/音乐按钮.png");
background-position: 0 0;
background-repeat: no-repeat;
}
#fileBox:hover{
left: 0px;
background: url("img/音乐按钮.png");
background-position: 0px -40px;
background-repeat: no-repeat;
}
.file{
position: absolute;
left: 0px;
opacity: 0;
height:40px;
width: 40px;
cursor: pointer;
font-size:0;
}
#pre{
left: 40px;
background: url("img/音乐按钮.png");
background-position: 0px -80px;
background-repeat: no-repeat;
}
#pre:hover{
background: url("img/音乐按钮.png");
background-position: 0px -120px;
background-repeat: no-repeat;
}
#startStop{
left: 80px;
}
.start{
background: url("img/音乐按钮.png");
background-position: 0px -160px;
background-repeat: no-repeat;
}
.start:hover{
background: url("img/音乐按钮.png");
background-position: 0px -200px;
background-repeat: no-repeat;
}
.stop{
background: url("img/音乐按钮.png");
background-position: 0px -240px;
background-repeat: no-repeat;
}
.stop:hover{
background: url("img/音乐按钮.png");
background-position: 0px -280px;
background-repeat: no-repeat;
}
#next{
left: 120px;
background: url("img/音乐按钮.png");
background-position: 0px -320px;
background-repeat: no-repeat;
}
#next:hover{
background: url("img/音乐按钮.png");
background-position: 0px -360px;
background-repeat: no-repeat;
}
#playType{
left: 165px;
}
.lbxh{
background: url("img/音乐按钮.png");
background-position: 0px -400px;
background-repeat: no-repeat;
}
.lbxh:hover{
background: url("img/音乐按钮.png");
background-position: 0px -440px;
background-repeat: no-repeat;
}
.dqxh{
background: url("img/音乐按钮.png");
background-position: 0px -480px;
background-repeat: no-repeat;
}
.dqxh:hover{
background: url("img/音乐按钮.png");
background-position: 0px -520px;
background-repeat: no-repeat;
}
.sjbf{
background: url("img/音乐按钮.png");
background-position: 0px -560px;
background-repeat: no-repeat;
}
.sjbf:hover{
background: url("img/音乐按钮.png");
background-position: 0px -600px;
background-repeat: no-repeat;
}
#progressDiv{
position: absolute;
left: 205px;
height:40px;
width: 310px;
cursor: pointer;
color: aliceblue;
font-size: 14px;
}
#progressDiv .times{
height: 40px;
line-height: 40px;
text-align: center;
display: inline-block;
color: #515151;
}
#progressDiv .times:hover{
color: #2c2c2c;
}
#progressDiv .progress{
position: absolute;
top: 20px;
left: 90px;
border-radius:20px;
}
#progressBar{
border: 2px solid;
box-shadow: 0px 0px 10px 5px #3b8cf8, 0 0 1px #3b8cf8, 0 0 1px #3b8cf8, 0 0 1px #3b8cf8, 0 0 1px #3b8cf8, 0 0 1px #3b8cf8, 0 0 1px #3b8cf8;
color: #fff;
}
.musicList{
position: absolute;
top: 40px;
left: 10px;
width: 500px;
height: 540px;
overflow: auto;
border: 1px solid rgba(30,144,255,0.5);
}
#musicList{
/*position: absolute;*/
list-style: none;
margin: 0px;
padding: 2px 10px;
width: 480px;
height: 530px;
}
#musicList>li{
position: relative;
padding: 10px;
overflow: hidden;
cursor: pointer;
margin: 5px 2px;
font-size: 14px;
text-shadow: 0 0 2px red,0 0 10px red,0 0 30px red,0 0 10px red;
}
#musicList>li:hover{
background-color:rgba(30,144,255, 0.5);
color: rgb(255,255,255);
}
.liFocus{
background-color:rgba(30,144,255, 0.5);
color: rgb(255,255,255);
}
.liDefocus{
background-color: rgba(135,206,250, 0.5);
color: #2c2c2c;
}
/* 让canvas位于ul标签下面 */
#wrap{
z-index: -1;
position: absolute;
top: 40px;
left: 10px;
}
</style>
</head>
<body>
<div class="main">
<div class="musicBox">
<div class="buttons fileBox" id="fileBox">
<input type="file" id="file" class="file" multiple="multiple" accept="audio/*">
</div>
<div class="buttons" id="pre"></div>
<div class="buttons start" id="startStop"></div>
<div class="buttons" id="next"></div>
<div class="buttons lbxh" id="playType"></div>
<div class="progressDiv" id="progressDiv">
<div class="times" id="rollTime" >00:00</div>
<div class="times">/</div>
<div class="times" id="totalTime">00:00</div>
<div class="progress" id="totalProgress" style="width: 210px;border: 2px solid #68768A;"></div>
<div class="progress" id="progressBar"></div>
</div>
</div>
<div class="musicList">
<ul id="musicList"></ul>
</div>
<canvas id="wrap"></canvas>
</div>
<script>
let file = document.getElementById('file'), // 导入歌曲
pre = document.getElementById('pre'), // 上一首
startStop = document.getElementById('startStop'), //播放、暂停
next = document.getElementById('next'), // 下一首
playType = document.getElementById('playType'), // 切换播放方式
rollTime = document.getElementById('rollTime'), // 实时播放时间
totalTime = document.getElementById('totalTime'), // 总时长
progressBar = document.getElementById('progressBar'), // 歌曲实时进度条
totalProgress = document.getElementById('totalProgress'), // 歌曲总进度条
liIdPrefix = 'mli', // 音乐列表li的id前缀
listContainer = document.getElementById('musicList'); // 音乐列表
let audio = new Audio();
var playTypeNum = 1,// 默认是列表循环（1 列表循环 2 单曲循环 3 随机播放）
current, // 当前音乐播放索引
preIndex, // 上一个播放的索引（因为当前播放音乐所在的li会有个聚焦的class样式，因此在改变当前播放之前，先记录当前播放索引，用于清空聚焦的class样式）
fileList = [];
// 音频可视化
wrap.width = 500;
wrap.height = 540;
const canvasCtx = wrap.getContext("2d");
const AudioContext = window.AudioContext || window.webkitAudioContext || window.mozAudioContext;
let audioContext = new AudioContext();//实例化
let sources; // 音频源
/**
* 加载音乐文件列表
*/
file.onchange = function (e){
if (e.target.files.length>0){
fileList = e.target.files;
showMusiclist(fileList);
current = 0;
preIndex = undefined; // 每次重新导入了音乐，将 上一个播放的索引 重置为undefined
loadMusicAndPlay(current);
}
}
/**
* 展示音乐列表
*/
function showMusiclist(list){
var container = document.createDocumentFragment();
for(var i = 0; i < list.length ; i++ ){
var file = list[i]
var node = document.createElement('li'); // 创建li元素
node.id = liIdPrefix + i; // 设置li的id
node.innerText = '[' + (i+1) + '] ' + file.name;
node.className = 'liDefocus'; // 设置li的class样式
container.appendChild(node);
}
// 每次列表添加数据之前，先清空之前的列表
while (listContainer.firstChild) {
listContainer.removeChild(listContainer.firstChild);
}
listContainer.appendChild(container);
}
/**
* 切换播放方式
*/
playType.onclick = function (){
if (playTypeNum == 1){
// 当前播放为列表循环，点击切换播放方式时，改为单曲循环
console.log('列表循环====>>>单曲循环');
playTypeNum = 2;
playType.className = "buttons dqxh"; // 设置单曲循环的class
}else if (playTypeNum == 2){
// 当前播放为单曲循环，点击切换播放方式时，改为随机播放
console.log('单曲循环====>>>随机播放');
playTypeNum = 3;
playType.className = "buttons sjbf"; // 设置随机播放的class
}else {
// 当前播放为随机播放，点击切换播放方式时，改为列表循环
console.log('随机播放====>>>列表循环');
playTypeNum = 1;
playType.className = "buttons lbxh"; // 设置列表循环的class
}
}
/**
* 根据播放方式，播放音乐
*/
function playTypeChange(){
preIndex = current; // 每次改变当前播放时，记录当前播放的索引
if (playTypeNum == 1){
// 列表循环
if(current >= fileList.length - 1){
current = 0;
loadMusicAndPlay(current);
}else{
loadMusicAndPlay(++current);
}
}else if(playTypeNum == 2){
// 单曲循环
// 单曲循环不改变播放索引
console.log(current);
loadMusicAndPlay(current);
}else {
// 随机播放，生成随机数
current = Math.floor(Math.random()*fileList.length);
loadMusicAndPlay(current);
}
}
/**
* 双击切换播放
*/
listContainer.ondblclick = function(e){
if(e.target.tagName.toLowerCase() === 'li'){
for(var i = 0; i < this.children.length; i++){
if(this.children[i] === e.target){
preIndex = current; // 切换播放之前，先记录当前播放索引
current = i
}
}
console.log('第%d首', current + 1)
loadMusicAndPlay(current);
}
}
/**
* 上一曲
*/
pre.onclick = function (){
if (fileList.length>0){
console.log('点击播放上一首！');
preIndex = current;
if (current == 0){
current = fileList.length-1;
loadMusicAndPlay(current);
}else {
loadMusicAndPlay(--current);
}
}
}
/**
* 下一曲
*/
next.onclick = function (){
if (fileList.length>0) {
console.log('点击播放下一首！');
preIndex = current;
if (current >= fileList.length - 1) {
current = 0;
loadMusicAndPlay(current);
} else {
loadMusicAndPlay(++current);
}
}
}
/**
* 播放暂停
*/
startStop.onclick = function (){
startOrStop();
}
/**
* 播放或暂停
*/
function startOrStop(){
if (fileList.length>0) {
if (audio.paused) {
// 如果当前音乐是暂停状态，点击按钮，则改为播放状态
startStop.className = "buttons start"; // 设置播放的class
audio.play();
} else {
// 如果当前音乐是播放状态，点击按钮，则改为暂停状态
startStop.className = "buttons stop"; // 设置暂停的class
audio.pause();
}
}
}
/**
* 加载音乐、播放
*/
function loadMusicAndPlay(id){
var file = fileList[id];
progressBar.setAttribute('style','width:0');// 重置进度条
if (!Object.is(preIndex,undefined)){
// 如果上一次播放索引不为undefined
listContainer.children[preIndex].className = 'liDefocus';
}
listContainer.children[id].className = 'liFocus'; // 聚焦当前行
// 如果音乐是暂停状态，切换播放，则改为播放状态
if (audio.paused){
startStop.className = "buttons start"; // 设置播放的class
}
audioContext.resume();
var fileReader = new FileReader();
fileReader.readAsDataURL(file); // 文件读取为url
fileReader.onload = function(e) {
audio.src = e.target.result;
audio.volume = 0.2; // 设置起始音量
// 当音频源为undefined时才创建
if (Object.is(sources,undefined)){
/**
画频谱，需要用到audioContext。我们通过audio元素来创建音频源。
注意：在这里音频源不能多次创建，因为我们的audio元素是全局变量，在每次切换播放的时候，
并没有重新new Audio，这说明不管放那一首歌，audio始终是同一个元素（对象），只是改变了它的src属性值，
因此我们创建音源的时候也只能创建一次。
如果每次切换都创建音源会报错，除非每次切换歌曲的时候都创建一遍audio，这样每一次的audio都不同，
这样音源才可以也跟着每次都创建一遍
*/
//创建一个MediaElementAudioSourceNode接口来关联audio元素的音频。
sources = audioContext.createMediaElementSource(audio);
}
var analyser = audioContext.createAnalyser();
// 连接到音频分析器，分析频谱
sources.connect(analyser);
analyser.connect(audioContext.destination);
绘制频谱(analyser,file.name); // 绘制音频频谱
audio.play();
}
}
function 绘制频谱(analyser,name){
var oW = wrap.width;
var oH = wrap.height;
var color1 = canvasCtx.createLinearGradient(oW/2, 0, oW, oH / 2);
color1.addColorStop(0, '#FFF');
color1.addColorStop(.2, '#FFFF00');
color1.addColorStop(.25, '#FF4500');
color1.addColorStop(.4, '#00FF7F');
color1.addColorStop(.5, '#FFD700');
color1.addColorStop(.75, '#FFFAFA');
color1.addColorStop(.85, '#00FF7F');
color1.addColorStop(1, '#FF00FF');
/*var color2=canvasCtx.createLinearGradient(0,0,oW,oH);
color2.addColorStop(0, '#1E90FF');
color2.addColorStop(.25, '#FFD700');
color2.addColorStop(.5, '#8A2BE2');
color2.addColorStop(.75, '#4169E1');
color2.addColorStop(1, '#FF0000');*/
var output = new Uint8Array(360);
var du = 2,//角度
R = 160,//半径
W = 3;//宽
(function drawSpectrum() {
analyser.getByteFrequencyData(output);
canvasCtx.clearRect(0, 0, wrap.width, wrap.height);
for (var i = 0; i < 360; i++) {
var value = output[i] / 8;
canvasCtx.beginPath();
canvasCtx.lineWidth = W;
Rv1 = (R -value);
Rv2 = (R +value);
canvasCtx.moveTo((Math.sin((i * du) / 180 * Math.PI) * Rv1 + oW/2),-Math.cos((i * du) / 180 * Math.PI) * Rv1 + oH/2);
canvasCtx.lineTo((Math.sin((i * du) / 180 * Math.PI) * Rv2 + oW/2),-Math.cos((i * du) / 180 * Math.PI) * Rv2 + oH/2);
canvasCtx.strokeStyle = color1;//线条的颜色
canvasCtx.stroke();
}
canvasCtx.font = "14px 华文楷体";
// 设置颜色
canvasCtx.fillStyle = color1;
// 设置水平对齐方式
canvasCtx.textAlign = "center";
// 设置垂直对齐方式
canvasCtx.textBaseline = "middle";
// 绘制文字（参数：要写的字，x坐标，y坐标）
canvasCtx.fillText(name, oW/2, oH/2);
requestAnimationFrame(drawSpectrum);
})();
}
/**
* 监听音频是否播放完毕，播放完毕继续播放下一首
*/
audio.addEventListener('ended', function () {
console.log('音频播放完毕，开始播放下一首！');
playTypeChange();
}, false);
/**
* 监听音频加载事件（元数据加载），获取音频时长
*/
audio.addEventListener("loadedmetadata", function () {
totalTime.textContent = getFormatterDate(audio.duration);
});
/**
* 监听音频播放时间更新事件，实时更新当前播放时间和进度条
*/
audio.addEventListener( "timeupdate" , function (){
var currentTime = audio.currentTime; // 当前播放时间
var totalTime = audio.duration; // 总时间
// 当是数字的时候
if (!isNaN(totalTime)) {
rollTime.textContent = getFormatterDate(currentTime);// 当前播放时间
var width = Math.floor(currentTime / totalTime * 210);// 得到播放时间与总时长的比值
// 设置进度条走动
progressBar.setAttribute('style','width:'+width+'px');
}
});
/**
* 监听进度条点击事件
*/
totalProgress.addEventListener("click",function (event) {
updateTime(event.offsetX);// 获取鼠标所在位置,更新播放时间和进度条
});
/**
* 监听进度条点击事件
*/
progressBar.addEventListener("click",function (event) {
updateTime(event.offsetX);// 获取鼠标所在位置,更新播放时间和进度条
});
/**
* 更新播放时间和进度条
*/
function updateTime(x){
if (fileList.length>0) {
var bfb = x / 210 * 100;
audio.currentTime = audio.duration*+bfb/100;
var width = Math.floor(audio.currentTime / audio.duration * 210);// 得到播放时间与总时长的比值
// 设置进度条走动
progressBar.setAttribute('style','width:'+width+'px');
}
}
/**
* 格式化时间(00:00)
*/
function getFormatterDate(time){
var m = parseInt(time / 60 );// 分
var s = parseInt(time % 60 );// 秒
// 补零
m = m > 9 ? m : "0" + m;
s = s > 9 ? s : "0" + s;
return m + ":" + s;
}
// 调用事件
window.onkeydown = function (e) {
if (e.keyCode==80 && e.ctrlKey && e.altKey){
console.log('按下了快捷键：ctrl+alt+p 键');
startOrStop();
}
}
</script>
</body>
</html>
In terms of frequency spectrum, I used the code from a js blog to realize ring-shaped visual audio that I wrote before , and used it directly, changing a little color and size.
at last
I am wondering if I can change this page to a chrome extension when I am free, but it will take some time to learn how to develop the extension, so I can only study it when I am free. Then the player written by swing, I will spend time to improve it when I have time later, and I will write another article when there are no bugs.
Download all codes and used icon resources: Click me to download
It doesn't matter if you don't have points, I uploaded it to gitee: html music player