flash中显示LRC歌词原理

作者佚名技术来源服务器技术浏览发布时间 2012-07-10

0);
} 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;
}
////使用快速排序(备用)
//QuickSorter(lrcData.timer);
InsertionSorter(lrcData.timer);
lrcData.tmpInfo = new Array();
for (var i = 0; i lrcData.tmpInfo[i] = lrcData.info[lrcData.timerID[i]];
}
lrcData.info = lrcData.tmpInfo;
}
//数组排序算法:插入排序
//这份算法代码核心是从网上找的
function InsertionSorter(list) {
for (var i = 1; i var t = list[i];
var j = i;
while ((j>0) && (list[j-1]>t)) {
list[j] = list[j-1];
var myC = lrcData.timerID[j];
lrcData.timerID[j] = lrcData.timerID[j-1];
lrcData.timerID[j-1] = myC;
--j;
}
list[j] = t;
}
}
//快速排序(备用)
//这份算法代码核心是从网上找的
function QuickSorter(list) {
var low = 0;
var high = list.length-1;
if (high<=low) {
return;
} else if (high == low+1) {
if (list[low]>list[high]) {
Swap(low, high);
return;
}
}
myQuickSort(list, low, high);
}
function myQuickSort(list, low, high) {
if (low var pivot = Partition(list, low, high);
myQuickSort(list, low, pivot-1);
myQuickSort(list, pivot+1, high);
}
}
function Partition(list, low, high) {
var pivot;
var pivot = list[low];
while (low while (low=pivot) {
high--;
}
if (low != high) {
Swap(low, high);
low++;
}
while (low low++;
}
if (low != high) {
Swap(low, high);
high--;
}
}
return low;
}
function Swap(l, r) {
var myl = lrcData.timerID[l];
lrcData.timerID[l] = lrcData.timerID[r];
lrcData.timerID[r] = myl;
lrcData.timer[l] = lrcData.timer[l] ^ lrcData.timer[r];
lrcData.timer[r] = lrcData.timer[l] ^ lrcData.timer[r];
lrcData.timer[l] = lrcData.timer[l] ^ lrcData.timer[r];
}
//
//LRC显示
function startShowLRC() {
this.onEnterFrame = checTimer;
isLRCShow = true;
var t = getTimer();
var

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