在线播放MP3和歌词对照功能代码

页面演示：http://bidwy.lingd.net/article-1898317-1.html
百度搜索：http://www.baidu.com/s?wd=%D4%DA%CF%DF%B2%A5%B7%C5+%B8%E8%B4%CA%B6%D4%D5%D5+%B4%FA%C2%EB

// 为了兼容 IE5.0 结果好多正则的语法和处理方式都不能用，所以代码效率不是最高，郁闷。
function lrcClass(tt)                //LRC歌词处理类
{
this.gsh=”歌手:~1~\n曲名:~2~\n专辑:~3~\n编者:~4~”;
this.inr = [];                //行
this.oTime = 0;                //余补时间
this.hailang;
this.dts = -1;                //当前行显示的s
this.dte = -1;                //当前行显示的e
this.dlt = -1;                //当前行
this.ddh;                //当前行数据
this.fjh;
this.haohaiplay;
this.oceanx;
this.cnane;
//以上几个属性是为了判断是否还在上次显示的时间范围，以减少循环次数
if(/\[offset\:(\-?\d+)\]/i.test(tt))                //取offset余补时间
    this.oTime = RegExp.$1/1000;
this.gsh = this.gsh.replace(“~1~”,(/\[ar:([^\[\]:]+)\]/i.test(tt))?RegExp.$1:”—-“);
this.gsh = this.gsh.replace(“~2~”,(/\[ti:([^\[\]:]+)\]/i.test(tt))?RegExp.$1:”—-“);
this.gsh = this.gsh.replace(“~3~”,(/\[al:([^\[\]:]+)\]/i.test(tt))?RegExp.$1:”—-“);
this.gsh = this.gsh.replace(“~4~”,(/\[by:([^\[\]:]+)\]/i.test(tt))?RegExp.$1:”—-“);
lrcxx.innerText = this.gsh;
tt = tt.replace(/\[\:\][^$\n]*(\n|$)/g,”$1″);                //去掉注解
tt = tt.replace(/\[[^\[\]\:]*\]/g,””);
tt = tt.replace(/\[[^\[\]]*[^\[\]\d]+[^\[\]]*\:[^\[\]]*\]/g,””);
tt = tt.replace(/\[[^\[\]]*\:[^\[\]]*[^\[\]\d\.]+[^\[\]]*\]/g,””);
tt = tt.replace(/<[^<>]*[^<>\d]+[^<>]*\:[^<>]*>/g,””);
tt = tt.replace(/<[^<>]*\:[^<>]*[^<>\d\.]+[^<>]*>/g,””);                //去掉除时间标签的其它标签

while(/\[[^\[\]]+\:[^\[\]]+\]/.test(tt))
{
    tt = tt.replace(/((\[[^\[\]]+\:[^\[\]]+\])+[^\[\r\n]*)[^\[]*/,”\n”);
    var zzzt = RegExp.$1;
    /^(.+\])([^\]]*)$/.exec(zzzt);
    var ltxt = RegExp.$2;
    var eft = RegExp.$1.slice(1,-1).split(“][“);
    for(var ii=0; ii<eft.length; ii++)
    {
      var sf = eft[ii].split(“:”);
      var tse = parseInt(sf[0],10) * 60 + parseFloat(sf[1]);
      var sso = { t:[] , w:[] , n:ltxt }
      sso.t[0] = tse-this.oTime;
      this.inr[this.inr.length] = sso;
    }
}
this.inr = this.inr.sort( function(a,b){return a.t[0]-b.t[0];} );

for(var ii=0; ii<this.inr.length; ii++)
{
    while(/<[^<>]+\:[^<>]+>/.test(this.inr[ii].n))
    {
      this.inr[ii].n = this.inr[ii].n.replace(/<(\d+)\:([\d\.]+)>/,”%=%”);
      var tse = parseInt(RegExp.$1,10) * 60 + parseFloat(RegExp.$2);
      this.inr[ii].t[this.inr[ii].t.length] = tse-this.oTime;
    }
    lrcbc.innerHTML = “<font>”+ this.inr[ii].n.replace(/&/g,”&”).replace(/</g,”<”).replace(/>/g,”>”).replace(/%=%/g,”</font><font>”) +” </font>”;
    var fall = lrcbc.getElementsByTagName(“font”);
    for(var wi=0; wi<fall.length; wi++)
      this.inr[ii].w[this.inr[ii].w.length] = fall[wi].offsetWidth;
    this.inr[ii].n = lrcbc.innerText;
}
this.print(“”);
lrcwt1.innerText = “”;
lrcwt2.innerText = “”;
lrcwt3.innerText = “”;
lrcwt4.innerText = “”;
lrcwt5.innerText = “”;
lrcbc.style.width = 0;
}
lrcClass.prototype.run = function()
{
try {
    if(this.oceanx==0)
      this.runing(this.haohaiplay.controls.currentPosition, this.haohaiplay.currentMedia.duration);
    else
      this.runing(this.haohaiplay.GetPosition()/1000, this.haohaiplay.GetLength()/1000);
} catch(hh){}
}

lrcClass.prototype.runing = function(tme, plen)
{
if(tme<this.dts || tme>=this.dte)
{
    var ii;
    for(ii=this.inr.length-1; ii>=0 && this.inr[ii].t[0]>tme; ii–){}
    if(ii<0) return;
    this.ddh = this.inr[ii].t;
    this.fjh = this.inr[ii].w;
    this.dts = this.inr[ii].t[0];
    this.dte = (ii<this.inr.length-1)?this.inr[ii+1].t[0]:plen;

    lrcwt1.innerText = this.retxt(ii-3);
    lrcwt2.innerText = this.retxt(ii-2);
    lrcwt3.innerText = this.retxt(ii-1);
    lrcwt4.innerText = this.retxt(ii+1);
    lrcwt5.innerText = this.retxt(ii+2);
    this.print(this.retxt(ii));
    if(this.dlt==ii-1)
    {
      clearTimeout(this.hailang);
      this.golrcoll(0);
    }
    this.dlt = ii;
}
var bbw = 0;
var ki;
for(ki=0; ki<this.ddh.length && this.ddh[ki]<=tme; ki++)
    bbw += this.fjh[ki];
var kt = ki-1;
var sc = ((ki<this.ddh.length)?this.ddh[ki]:this.dte) – this.ddh[kt];
var tc = tme – this.ddh[kt];
bbw -= this.fjh[kt] – tc / sc * this.fjh[kt];
if(bbw>lrcbox.offsetWidth)
    bbw = lrcbox.offsetWidth;
lrcbc.style.width = Math.round(bbw);
}

lrcClass.prototype.retxt = function(i)
{
return (i<0 || i>=this.inr.length)?””:this.inr[i].n;
}

lrcClass.prototype.print = function(txt)
{
lrcbox.innerText = txt;
lrcbc.innerText = txt;
}

lrcClass.prototype.golrcoll = function(s)
{
lrcoll.style.top = 25-(s++)*5;
lrcwt1.filters.alpha.opacity = 90-s*18;
lrcwt5.filters.alpha.opacity = s*18+10;
if(s<=5)
this.hailang = setTimeout(this.cnane+”.golrcoll(“+s+”)”,120);
}

////////////////////////////////////////////////////////////////////

var lrcobj;

function play()
{
var m = lrcdata.innerHTML.slice(4,-3);
lrcobj = new lrcClass(m);
lrcobj.cnane = “lrcobj”;
lrcobj.haohaiplay = mediaPlayerObj;
lrcobj.oceanx = 0;
//0为使用 Media Player 控件，1为使用 Real Player 控件

setInterval(“lrcobj.run();”,100);

}

</script>
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PHP+CMS+网站 · 2009年05月13号 0

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PHP+CMS+网站 · 2009年05月13号 0

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