以前为了赶项目,利用系统组件制作过一款视频播放器(见Flash/Flex学习笔记(6):制作基于xml数据源的flv视频播放器),但是系统组件实在是太大了,最终生成的swf居然有103K,随着AS3的深入学习,昨天又弄了一个只用AS3的播放器,最终只有8.82K,呵呵,这肥减得那是相当厉害。
用到了上一篇(Flash/Flex学习笔记(35):自己动手实现一个滑块控件(JimmySilder))里自己写的的滑块控件,主要代码如下(关键是NetConnection与NetStream对象的使用):
import Jimmy.Event.ValueChangeEvent;
var _autoPlay:Boolean=true;//是否自动播放
var _netConn:NetConnection;
var _netStream:NetStream;
var _duration:Number=0.0;
var _client:Object;
var _soundTransform:SoundTransform;
var _volumn=0.6;//初始音量
var _flvUrl = "flv的地址";
function init():void {
txtInfo.text = "";
txtInfo.visible = false;
txtCurrent.text = "00:00";
txtTotal.text = "00:00";
silderVideo.Value = 0.0;
videoMask.visible = false;
txtPercent.text = "";
txtPercent.visible = false;
_netConn = new NetConnection();//创建连接
_client = new Object();
_soundTransform = new SoundTransform();
//初始化[暂停]/[播放]按钮可见性
if (_autoPlay) {
btnPause.visible=true;
btnPlay.visible=false;
} else {
btnPause.visible=false;
btnPlay.visible=true;
}
//初始化滑块按钮宽度
silderSound.ButtonWidth=35;
silderVideo.ButtonWidth=9.5;
silderSound.Value = _volumn;
silderSound.ShowBarTri = true;
silderSound.ShowBar = false;
//开始连接并播放
_netConn.connect(null);
_netStream=new NetStream(_netConn);
_netStream.bufferTime = 5;
wVideo.attachNetStream(_netStream);
_netStream.play(_flvUrl);
_soundTransform.volume=_volumn;
_netStream.soundTransform=_soundTransform;
_client.onMetaData = MetaDataHandler;
_netStream.client=_client;
//注册监听事件
_netStream.addEventListener(NetStatusEvent.NET_STATUS,NetStatusHandler);
btnSound.addEventListener(MouseEvent.MOUSE_OVER,function(){ Mouse.cursor = MouseCursor.BUTTON});
btnSound.addEventListener(MouseEvent.MOUSE_OUT,function(){ Mouse.cursor = MouseCursor.AUTO});
btnSound.addEventListener(MouseEvent.MOUSE_DOWN,btnSoundMouseDown);
btnPlay.addEventListener(MouseEvent.CLICK,btnPlayMouseClick);
btnPause.addEventListener(MouseEvent.CLICK,btnPauseMouseClick);
btnStop.addEventListener(MouseEvent.CLICK,btnStopMouseClick);
silderSound.addEventListener(ValueChangeEvent.VALUE_CHANGE,VolumnChangedHandler);
addEventListener(Event.ENTER_FRAME,EnterFrameHandler);
silderVideo.addEventListener(MouseEvent.MOUSE_DOWN,silderVideoMouseDown);
silderVideo.addEventListener(ValueChangeEvent.VALUE_CHANGE,VideoValueChangedHandler);
}
function NetStatusHandler(e:NetStatusEvent):void{
txtInfo.text = "";
videoMask.visible = txtPercent.visible = txtInfo.visible = false;
trace(e.info.code);
switch(e.info.code){
case "NetStream.Play.StreamNotFound":
txtInfo.text = "错误:视频文件地址无法访问"
break;
case "NetStream.Play.Failed":
txtInfo.text = "错误:视频播放失败"
break;
case "NetStream.Buffer.Empty":
txtInfo.text = "影片缓冲中...";
break;
case "NetStream.Play.Stop":
//txtInfo.text = "播放已停止";
break;
case "NetStream.Seek.InvalidTime":
//txtInfo.text = "错误:无法跳到指定的时间点播放";
//trace(e.info.Error);
//_netStream.pause();
//btnPlay.visible = true;
//btnPause.visible = false;
break;
default:
break;
}
if (txtInfo.text.length>0){
videoMask.visible = txtPercent.visible = txtInfo.visible = true;
}
}
function btnSoundMouseDown(e:MouseEvent) {
var i:uint=btnSound.currentFrame;
if (i==1) {
btnSound.gotoAndStop(2);//切换到静音
SetVolumn(0);
} else {
btnSound.gotoAndStop(1);//切换到有声音
SetVolumn(silderSound.Value);
}
}
//设置音量
function SetVolumn(vol:Number):void {
var _snd:SoundTransform = _netStream.soundTransform;
_snd.volume = vol;
_netStream.soundTransform = _snd;
}
//Play按钮点击事件
function btnPlayMouseClick(e:MouseEvent) {
//切换按钮可用性
btnPause.visible=true;
btnPlay.visible=false;
//开始播放...
_netStream.resume();
}
//Pause按钮点击事件
function btnPauseMouseClick(e:MouseEvent) {
//切换按钮可用性
btnPause.visible=false;
btnPlay.visible=true;
//暂停...
_netStream.pause();
}
//Stop按钮点击事件
function btnStopMouseClick(e:MouseEvent) {
_netStream.pause();
_netStream.seek(0);
//切换播放/暂停按钮状态
btnPause.visible=false;
btnPlay.visible=true;
}
//获取视频总持续时间
function MetaDataHandler(data:Object) {
_duration = data.duration;
}
function VolumnChangedHandler(e:ValueChangeEvent):void{
//如果没被禁音,则允许调节音量
if (btnSound.currentFrame==1){
SetVolumn(e.NewValue);
}
}
function VideoValueChangedHandler(e:ValueChangeEvent):void{
_netStream.pause();
_netStream.seek(e.NewValue * _duration);
//_netStream.resume();
}
//进入每帧的处理函数
function EnterFrameHandler(e:Event):void{
if (_duration>0){
txtCurrent.text = Math.floor(_netStream.time/60) + ":" + Math.round(_netStream.time%60);
txtTotal.text = Math.floor(_duration/60) + ":" + Math.round(_duration%60);
silderVideo.Value = _netStream.time/_duration;
}
if (_netStream.bytesLoaded>0){
silderVideo.LoadingValue = _netStream.bytesLoaded / _netStream.bytesTotal;
}
//trace(_netStream.bytesLoaded + "/" + _netStream.bytesTotal);
}
function RemoveEnterFrameHandler(){
if (silderVideo.IsDragging){
removeEventListener(Event.ENTER_FRAME,EnterFrameHandler);
}
else{
addEventListener(Event.ENTER_FRAME,EnterFrameHandler);
}
}
function silderVideoMouseDown(e:MouseEvent):void{
//trace("进度滑块被点击了!");
removeEventListener(Event.ENTER_FRAME,EnterFrameHandler);
stage.addEventListener(MouseEvent.MOUSE_UP,stageMouseUpHandler);
}
function stageMouseUpHandler(e:MouseEvent):void{
addEventListener(Event.ENTER_FRAME,EnterFrameHandler);
//trace("鼠标MouseUp事件");
if (btnPause.visible){
_netStream.resume();
}
stage.removeEventListener(MouseEvent.MOUSE_UP,stageMouseUpHandler);
}
init();