jquery:使用 SoundManager 2 创建简单的网页音频播放器

官网:http://www.schillmania.com/projects/soundmanager2/

HTML5 标准中加入了两个非常强大的标签 audiovideo ,让我们在网页中嵌入视频和音频变得非常方便,但是不幸的是目前用户所使用的有很大一部分浏览器都是老版本的,并不支持这两个标签,这使前端开发者们很困扰,这里介绍一款相对来讲支持浏览器比较多的网页音频播放器 —— SoundManager 2。

以下是 SoundManager 2 支持的浏览器版本,你没看错,它甚至支持 IE5:

  • Firefox (all versions), Windows/Mac
  • Safari 1.3+ (Mac) / All Windows versions
  • Mobile Webkit: iOS 4.0 devices, iPad 3.2 (original iPad iOS release) and newer
  • Android (2.3+, confirmed on 2.3.3.)
  • Google Chrome (all versions/OSes)
  • Internet Explorer 5.0+, Windows
  • Opera 9.10 (slightly buggy, 9.5+ ideal), Windows/Mac
  • Netscape 8.0+, Windows/Mac
  • Firefox 1.5+, Linux (Flash 9 beta).

创建一个简单的音频播放器

下面将演示如何创建一个简单的音频播放器:

播放器功能

  • 播放和暂停
  • 取消和重新播放
  • 加大/减小声音
  • 快进/快退 30 秒
  • 显示播放进度
  • 显示当前音量

根据上面的列表,我们需要 6 个按钮,所以我们现在 HTML 中生成 6 个按钮控件。

<div class="player">
   <div class="player__audio-info">
      <div>
         Played
         <span class="player__time-elapsed">-</span> of
         <span class="player__time-total">-</span>
         <button class="player__previous%20button%20button--small">Move back</button>
         <button class="player__next%20button%20button--small">Move forth</button>
      </div>
      <div>
         Volume: <span class="player__volume-info">100</span>
         <button class="player__volume-down%20button%20button--small">Volume down</button>
         <button class="player__volume-up%20button%20button--small">Volume up</button>
      </div>
   </div>
   <button class="player__play%20button%20button--large">Play</button>
   <button class="player__stop%20button%20button--large">Stop</button>
</div>

添加一些样式

.player
{
   display: inline-block;
   width: 300px;
   padding: 5px;
   background-color: #E3E3E3;
   border: 1px solid #000000;
}

.player span
{
   font-weight: bold;
}

.button
{
   text-indent: 200%;
   white-space: nowrap;
   overflow: hidden;
   border: none;
   padding: 0;
   background: rgba(255,255,255,0);
   cursor: pointer;
   vertical-align: bottom;
}

.button--small
{
   width: 19px;
   height: 19px;
}

.button--large
{
   width: 48px;
   height: 48px;
}

.player__audio-info
{
   padding-bottom: 5px;
   border-bottom: 1px dotted #000000;
}

.player__audio-info div + div
{
   margin-top: 10px;
}

.player__volume-info
{
   display: inline-block;
   width: 1.5em;
}

.player__play
{
   background-image: url("http://i60.tinypic.com/14mbep2.png");
}

.player__play.is-playing
{
   background-image: url("http://i57.tinypic.com/idyhd2.png");
}

.player__stop
{
   background-image: url("http://i61.tinypic.com/35mehdz.png");
}

.player__previous
{
   background-image: url("http://i60.tinypic.com/sdihc5.png");
}

.player__next
{
   background-image: url("http://i57.tinypic.com/2s1nm77.png");
}

.player__volume-down
{
   background-image: url("http://i60.tinypic.com/331nom0.png");
}

.player__volume-up
{
   background-image: url("http://i60.tinypic.com/ekkc1t.png");
}

添加操作的 JavaScript 代码:

function formatMilliseconds(milliseconds) {
   var hours = Math.floor(milliseconds / 3600000);
   milliseconds = milliseconds % 3600000;
   var minutes = Math.floor(milliseconds / 60000);
   milliseconds = milliseconds % 60000;
   var seconds = Math.floor(milliseconds / 1000);
   milliseconds = Math.floor(milliseconds % 1000);

   return (hours > 0 ? hours : '0') + ':' +
      (minutes < 10 ? '0' : '') + minutes + ':' +
      (seconds < 10 ? '0' : '') + seconds + ':' +
      (milliseconds < 100 ? '0' : '') + (milliseconds < 10 ? '0' : '') + milliseconds;
}

var player = {
   btnPlay: document.querySelector('.player__play'),
   btnStop: document.querySelector('.player__stop'),
   btnPrevious: document.querySelector('.player__previous'),
   btnNext: document.querySelector('.player__next'),
   btnVolumeDown: document.querySelector('.player__volume-down'),
   btnVolumeUp: document.querySelector('.player__volume-up'),
   timeElapsed: document.querySelector('.player__time-elapsed'),
   timeTotal: document.querySelector('.player__time-total'),
   volume: document.querySelector('.player__volume-info')
};
var audio = null;

soundManager.setup({
   useFastPolling: true,
   useHighPerformance: true,
   onready: function() {
      audio = soundManager.createSound({
         id: 'audio',
         url: 'http://freshly-ground.com/data/audio/mpc/20090119%20-%20Untitled%20Groove.mp3',
         whileloading: function() {
            player.timeTotal.textContent = formatMilliseconds(audio.durationEstimate);
         },
         whileplaying: function() {
            player.timeElapsed.textContent = formatMilliseconds(audio.position);
         },
         onload: function() {
            player.timeTotal.textContent = formatMilliseconds(audio.duration);
         },
         onfinish: function() {
            var event;
            try {
               // Internet Explorer doesn't like this statement
               event = new Event('click');
            } catch (ex) {
               event = document.createEvent('MouseEvent');
               event.initEvent('click', true, false);
            }
            player.btnStop.dispatchEvent(event);
         }
      });
   }
});

player.btnPlay.addEventListener('click', function() {
   if (audio === null) {
     return;
   }

   if (audio.playState === 0 || audio.paused === true) {
     audio.play();
     this.classList.add('is-playing');
   } else {
     audio.pause();
     this.classList.remove('is-playing');
   }
});

player.btnStop.addEventListener('click', function() {
   if (audio === null) {
     return;
   }

   audio.stop();
   document.querySelector('.player__time-elapsed').textContent = formatMilliseconds(0);
   player.btnPlay.classList.remove('is-playing');
});

player.btnVolumeDown.addEventListener('click', function() {
   if (audio === null) {
     return;
   }

   var volume = audio.volume - 10 < 0 ? 0 : audio.volume - 10;
   audio.setVolume(volume);
   player.volume.textContent = volume;
});

player.btnVolumeUp.addEventListener('click', function() {
   if (audio === null) {
     return;
   }

   var volume = audio.volume + 10 > 100 ? 100 : audio.volume + 10;
   audio.setVolume(volume);
   player.volume.textContent = volume;
});

player.btnPrevious.addEventListener('click', function() {
   if (audio === null) {
     return;
   }

   var position = audio.position - 30000 < 0 ? 0 : audio.position - 30000;
   audio.setPosition(position);
   player.timeElapsed.textContent = formatMilliseconds(audio.position);
});

player.btnNext.addEventListener('click', function() {
   if (audio === null) {
     return;
   }

   var position = audio.position + 30000 > audio.duration ? audio.duration : audio.position + 30000;
   if (position === audio.duration) {
      var event;
      try {
         // Internet Explorer doesn't like this statement
         event = new Event('click');
      } catch (ex) {
         event = document.createEvent('MouseEvent');
         event.initEvent('click', true, false);
      }
      player.btnStop.dispatchEvent(event);
   } else {
      audio.setPosition(position);
      player.timeElapsed.textContent = formatMilliseconds(audio.position);   
   }
});

原文:http://segmentfault.com/a/1190000002602613

[实例] 使用JS播放声音——SoundManager 2

官方文档写得很详细,好东西

写个Demo

需要的文件有:下载soundmanager2包中的script文件夹和swf文件夹

Demo/
- index.html
Demo/script/
- jquery-1.8.2.min.js
- soundmanager2-nodebug-jsmin.js
Demo/swf/
- soundmanager2_flash_xdomain.zip
- soundmanager2_flash9_debug.swf
- soundmanager2_flash9.swf
- soundmanager2_debug.swf
- soundmanager2.swf
Demo/sound/
- msg.mp3

index.html

<!DOCTYPE html>
<html>
<head>
    <meta charset=utf-8 />
    <title>SoundDemo</title>
    <script type="text/javascript" src="script/soundmanager2-nodebug-jsmin.js"></script>
    <script type="text/javascript" src="script/jquery-1.10.0.min.js"></script>
    <script type="text/javascript">
      soundManager.setup({
        url: 'swf/', //swf文件夹的位置
        onready: function() {
          soundManager.createSound({
            id: 'msg',
            autoLoad: true,
            autoPlay: false,
            url: 'sound/msg.mp3' //mp3文件的位置
          });
        }
      });
      $(document).ready(function () {
        $('#play').click(function () {
          soundManager.play('msg'); //点击按钮可播放
        });
      });
    </script>
</head>
<body>
    <input type='button' id='play' value='Play' />
</body>
</html>

 

遇到的问题

  • 需要把Demo部署到服务器上才能正常, 否则还是会有?跨域的问题?(应该是这个问题吧), 不能加载本地文件. (意思是: 本地直接打开index.html是不能播放的, 但我上传到博客的服务器上就能播放了..有人不理解这个 – – 搜索”跨域”相关)
  • 用的.wav文件在chrome中能正常播放, 但在IE中不能播放, 转成.mp3文件后就都可以正常播放了

将代码添加到我自己写的IM里成功播放声音

参考文档:

原文:http://zoeyyoung.github.io/sound-manager-2-web-im.html

SoundManager属性
soundManager对象有许多可配置的属性,确定Flash的路径和其他行为。下面是SoundManager 2默认的属性,这适合大多数场合,一般情况下你不需要更改它们。
soundManager.url = “/path/to/swf-files/ ” ;
//SM2可以找到Flash影片(soundmanager2.swf,soundmanager2_flash9.swf和调试版本等)的路径。注意:如果没有设置,SM2将追加正确的SWF文件名,对flashVersion和debugMode设置。

soundManager.allowScriptAccess = “always “;
//运行SWF(对象/嵌入属性)方式 可选:”always” or “sameDomain”

soundManager.audioFormats = { … };
//定义支持哪种音频类型(默认情况下为MP3。)

soundManager.bgColor =” #FFFFFF “;
// 背景颜色。

soundManager.consoleOnly = true ;
//如果控制台正在使用,不创建或写入#soundmanager-debug

soundManager.debugMode = true ;
//是否启用调试模式

soundManager.debugFlash = false ;
//是否启用调试里面的SWF输出,解决闪存/浏览器的问题

soundManager.flashVersion = 8 ;
//flash版本(8或9)。一些API功能要求9。

soundManager.flashPollingInterval = null ;
//毫秒,影响加载回调函数频率。如果为null,则使用默认50毫秒。

soundManager.html5PollingInterval = null casino online ;
//毫秒,影响加载回调函数频率。如果为null,运行本地的HTML5更新事件。

soundManager.html5Test = /^(probably|maybe)$/i jameshallison casino ;
//测试HTML5的音频格式。也可用/^probably$/i

soundManager.flashLoadTimeout = 1000 ;
//毫秒 等待Flash视频加载的时间(0 =无穷) 超时显示加载失败

soundManager.noSWFCache = false ;
//如果为TURE,在缓存文件上追加?ts={date}以释放缓存
soundManager.preferFlash = true ;
//是否用到useHTML5audio。目前,如果为 ture并且flash支持的话,将使用MP3/MP4 flash,因为HTML5音频在浏览器中显示有问题。

soundManager.useConsole = true ;
//如果console.log()可用,则使用(否则,写入#soundmanager-debug 元素)

soundManager.useFlashBlock = false ;
//需要flashblock.css,看演示效果时,是否用到flash blockers 。

soundManager.useHighPerformance =false ;
//增强flash显示效果

soundManager.useHTML5Audio = ture ;
//如果API支持,则使用HTML5 Audio() (大多数Safari浏览器,浏览器版本),火狐(没有MP3/MP4)。

soundManager.waitForWindowLoad = false ;
//window.onload()执行完后,才运行soundManager.onload

soundManager.wmode = NULL ;
//flash渲染模式 – 可为:null, “transparent”, or “opaque” (最后两个允许使用z-index)

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