flash中显示LRC歌词原理

ttp://www.Flashk.org/.....Sukii-o/mp3/


s2 music player支持LRC歌词显示，它得的地址：
http://www.Flashk.org/.....Sukii-o/mp3/
由zas开发的s2 music player LRC歌词原理（由zas本人提供）：
//--接口--
function loadLRC(path) {
delete this.onEnterFrame;
lrcData.timer = new Array();
lrcData.info = new Array();
myCodePage = System.useCodepage;
System.useCodepage = true;
isLRCShow = false;
mc_lrc.tx_lrc.HTMLText = " ";
mc_lrc.tx_lrc.setTextFormat(lrcFormat);
trace("LRC文件地址:"+path);
lrcFile.load(path);
mc_loadEvent.onEnterFrame = function() {
if (lrcFile.getBytesLoaded()>10) {
var per = Math.floor(lrcFile.getBytesLoaded()/lrcFile.getBytesTotal()*100);
mc_lrc.tx_lrc.HTMLText = "


"+"正在下载歌词.."+per+"%";
} else {
mc_lrc.tx_lrc.HTMLText = "


"+"正在查找歌词.."+"";
}
mc_lrc.tx_lrc.setTextFormat(lrcFormat);
};
}
//
//读取LRC文本流
lrcFile = new XML();
lrcFile.onLoad = function(success) {
if (success) {
trace(true);
myLRC = this.toString();
myLRC = myLRC.slice(myLRC.indexOf("["));
initLRC();
} else {
trace("LRC LoadError");
mc_lrc.tx_lrc.HTMLText = "


"+"未加载歌词"+"";
mc_lrc.tx_lrc.setTextFormat(lrcFormat);
}
delete mc_loadEvent.onEnterFrame;
//编码恢复
if (myCodePage != undefined) {
System.useCodepage = myCodePage;
} else {
System.useCodepage = false;
}
};
//
//LRC解析器
myLRC = new String();
lrcData = new Object();
lrcData.timer = new Array();
lrcData.info = new Array();
lrcData.txScroll = new Array();
function initLRC() {
i = 0;
hasMoreTags = false;
offset = 0;
for (var k = 0; k<200; k++) {
//LRC文本流分行
var cur = myLRC.indexOf("\n");
parseLineData(myLRC.slice(0, cur));
myLRC = myLRC.slice(cur+1);
if (myLRC.length<=0) {
break;
}
}
if (hasMoreTags == true) {
sortTimer();
}
trace(lrcData.timer);
startShowLRC();
}
function parseLineData(lineString) {
var lineData = new String(lineString);
//解析[00:25.62]时间标签
var startCharID = lineData.indexOf("[");
if (isNaN(lineData.slice(startCharID+1, startCharID+3)) == false && lineData.indexOf(":") == startCharID+3) {
//标准[00:25.62]格式
if (lineData.indexOf("]") == startCharID+9) {
lrcData.info[i] = lineData.slice(lineData.lastIndexOf("]")+1);
lrcData.timer[i] = Number(lineData.slice(startCharID+1, startCharID+3))*60+Number(lineData.slice(startCharID+4, startCharID+6))+Number(lineData.slice(startCharID+7, startCharID+9)/100);
} else if (lineData.indexOf("]") == startCharID+10) {
//兼容[00:25.625]格式
lrcData.info[i] = lineData.slice(lineData.lastIndexOf("]")+1);
lrcData.timer[i] = Number(lineData.slice(startCharID+1, startCharID+3))*60+Number(lineData.slice(startCharID+4, startCharID+6))+Number(lineData.slice(startCharID+7, startCharID+10)/1000);
} else if (lineData.indexOf("]") == startCharID+8) {
//兼容[00:25.6]格式
lrcData.info[i] = lineData.slice(lineData.lastIndexOf("]")+1);
lrcData.timer[i] = Number(lineData.slice(startCharID+1, startCharID+3))*60+Number(lineData.slice(startCharID+4, startCharID+6))+Number(lineData.slice(startCharID+7, startCharID+8)/10);
} else if (lineData.indexOf("]") == startCharID+6) {
//兼容[00:21]格式
lrcData.info[i] = lineData.slice(lineData.lastIndexOf("]")+1);
lrcData.timer[i] = Number(lineData.slice(startCharID+1, startCharID+3))*60+Number(lineData.slice(startCharID+4, startCharID+6));
}
} else {
var tagName;
//解析标识标签
//[ar:艺人名]
if (lineData.indexOf("[ar:") != -1) {
tagName = "艺人：";
} else if (lineData.indexOf("[ti:") != -1) {
//[ti:曲名]
tagName = "歌曲：";
} else if (lineData.indexOf("[al:") != -1) {
//[al:专辑名]
tagName = "专辑：";
} else if (lineData.indexOf("[by:") != -1) {
//[by:编辑LRC歌词的网友信息]
tagName = "歌词制作：";
}
if (lineData.lastIndexOf("]")>lineData.lastIndexOf("[")) {
lrcData.info[i] = tagName+lineData.slice(lineData.lastIndexOf(":")+1, lineData.lastIndexOf("]"));
} else {
lrcData.info[i] = lineData;
}
if (lineData.indexOf("[offset:") != -1) {
//[offset:时间补偿值]
lrcData.info[i] = "------------------------------------------";
offset = Number(lineData.slice(lineData.lastIndexOf(":")+1, lineData.lastIndexOf("]")));
if (isNaN(offset)) {
offset = 0;
}
}
lrcData.timer[i] = 0;
}
i++;
//[01:17][02:24][02:53][03:21] 多时间标签支持
var surplusData = new String(lineData.slice(lineData.indexOf("]")+1));
if (surplusData.indexOf("[") != -1) {
hasMoreTags = true;
parseLineData(surplusData);
}
}
function sortTimer() {
lrcData.timerID = new Array();
for (var i = 0; i lrcData.timerID[i] = i;

[1] [2]  下一页