Flash/Flex学习笔记(37)：不用系统组件(纯AS3)的视频播放器--只有8.82K

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):

view source

print?

001

import Jimmy.Event.ValueChangeEvent;

002

003

var _autoPlay:Boolean=

true

;

//是否自动播放

004

var _netConn:NetConnection;

005

var _netStream:NetStream;

006

var _duration:Number=0.0;

007

var _client:Object;

008

var _soundTransform:SoundTransform;

009

var _volumn=0.6;

//初始音量

010

var _flvUrl =

"flv的地址"

;

011

012

function init():

void

{

013

txtInfo.text =

""

;

014

txtInfo.visible =

false

;

015

txtCurrent.text =

"00:00"

;

016

txtTotal.text =

"00:00"

;

017

silderVideo.Value = 0.0;

018

videoMask.visible =

false

;

019

txtPercent.text =

""

;

020

txtPercent.visible =

false

;

021

022

_netConn =

new

NetConnection();

//创建连接

023

_client =

new

Object();

024

_soundTransform =

new

SoundTransform();

025

026

//初始化[暂停]/[播放]按钮可见性

027

if

(_autoPlay) {

028

btnPause.visible=

true

;

029

btnPlay.visible=

false

;

030

}

else

{

031

btnPause.visible=

false

;

032

btnPlay.visible=

true

;

033

}   

034

035

//初始化滑块按钮宽度

036

silderSound.ButtonWidth=35;

037

silderVideo.ButtonWidth=9.5;    

038

silderSound.Value = _volumn;

039

silderSound.ShowBarTri =

true

;

040

silderSound.ShowBar =

false

;

041

042

//开始连接并播放

043

_netConn.connect(

null

);

044

_netStream=

new

NetStream(_netConn);

045

_netStream.bufferTime = 5;

046

wVideo.attachNetStream(_netStream);

047

_netStream.play(_flvUrl);   

048

_soundTransform.volume=_volumn;

049

_netStream.soundTransform=_soundTransform;

050

_client.onMetaData = MetaDataHandler;

051

_netStream.client=_client;

052

053

//注册监听事件

054

_netStream.addEventListener(NetStatusEvent.NET_STATUS,NetStatusHandler);

055

btnSound.addEventListener(MouseEvent.MOUSE_OVER,function(){Mouse.cursor = MouseCursor.BUTTON});

056

btnSound.addEventListener(MouseEvent.MOUSE_OUT,function(){Mouse.cursor = MouseCursor.AUTO});

057

btnSound.addEventListener(MouseEvent.MOUSE_DOWN,btnSoundMouseDown);

058

btnPlay.addEventListener(MouseEvent.CLICK,btnPlayMouseClick);

059

btnPause.addEventListener(MouseEvent.CLICK,btnPauseMouseClick);

060

btnStop.addEventListener(MouseEvent.CLICK,btnStopMouseClick);

061

silderSound.addEventListener(ValueChangeEvent.VALUE_CHANGE,VolumnChangedHandler);

062

addEventListener(Event.ENTER_FRAME,EnterFrameHandler);  

063

silderVideo.addEventListener(MouseEvent.MOUSE_DOWN,silderVideoMouseDown);

064

silderVideo.addEventListener(ValueChangeEvent.VALUE_CHANGE,VideoValueChangedHandler);

065

}

066

067

function NetStatusHandler(e:NetStatusEvent):

void

{

068

txtInfo.text =

""

;

069

videoMask.visible =txtPercent.visible =txtInfo.visible =

false

;

070

trace(e.info.code);

071

switch

(e.info.code){

072

case

"NetStream.Play.StreamNotFound"

:

073

txtInfo.text =

"错误：视频文件地址无法访问"

074

break

;

075

case

"NetStream.Play.Failed"

:

076

txtInfo.text =

"错误：视频播放失败"

077

break

;

078

case

"NetStream.Buffer.Empty"

:

079

txtInfo.text =

"影片缓冲中..."

;

080

break

;

081

case

"NetStream.Play.Stop"

:

082

//txtInfo.text ="播放已停止";

083

break

;

084

case

"NetStream.Seek.InvalidTime"

:

085

//txtInfo.text ="错误：无法跳到指定的时间点播放";

086

//trace(e.info.Error);

087

//_netStream.pause();

088

//btnPlay.visible = true;

089

//btnPause.visible = false;         

090

break

;  

091

default

:

092

break

;

093

}

094

095

if

(txtInfo.text.length>0){      

096

videoMask.visible =txtPercent.visible =txtInfo.visible =

true

;        

097

}

098

}

099

100

function btnSoundMouseDown(e:MouseEvent) {

101

var i:

uint

=btnSound.currentFrame;

102

if

(i==1) {

103

btnSound.gotoAndStop(2);

//切换到静音

104

SetVolumn(0);

105

}

else

{

106

btnSound.gotoAndStop(1);

//切换到有声音

107

SetVolumn(silderSound.Value);

108

}

109

}

110

111

//设置音量

112

function SetVolumn(vol:Number):

void

{

113

var _snd:SoundTransform = _netStream.soundTransform;

114

_snd.volume = vol;

115

_netStream.soundTransform = _snd;

116

}

117

118

//Play按钮点击事件

119

function btnPlayMouseClick(e:MouseEvent) {

120

//切换按钮可用性

121

btnPause.visible=

true

;

122

btnPlay.visible=

false

;

123

//开始播放...

124

_netStream.resume();

125

}

126

127

//Pause按钮点击事件

128

function btnPauseMouseClick(e:MouseEvent) {

129

//切换按钮可用性

130

btnPause.visible=

false

;

131

btnPlay.visible=

true

;

132

//暂停...

133

_netStream.pause();

134

}

135

136

//Stop按钮点击事件

137

function btnStopMouseClick(e:MouseEvent) {

138

_netStream.pause();

139

_netStream.seek(0);

140

141

//切换播放/暂停按钮状态

142

btnPause.visible=

false

;

143

btnPlay.visible=

true

;

144

}

145

146

147

//获取视频总持续时间

148

function MetaDataHandler(data:Object) {

149

_duration = data.duration;  

150

}

151

152

function VolumnChangedHandler(e:ValueChangeEvent):

void

{

153

//如果没被禁音，则允许调节音量

154

if

(btnSound.currentFrame==1){

155

SetVolumn(e.NewValue);

156

}

157

}

158

159

function VideoValueChangedHandler(e:ValueChangeEvent):

void

{

160

_netStream.pause();

161

_netStream.seek(e.NewValue * _duration);

162

//_netStream.resume();

163

}

164

165

//进入每帧的处理函数

166

function EnterFrameHandler(e:Event):

void

{

167

if

(_duration>0){

168

txtCurrent.text =Math.floor(_netStream.time/60) + 

":"

+ Math.round(_netStream.time%60);

169

txtTotal.text =Math.floor(_duration/60) + 

":"

+ Math.round(_duration%60);  

170

silderVideo.Value = _netStream.time/_duration;

171

}

172

if

(_netStream.bytesLoaded>0){

173

silderVideo.LoadingValue = _netStream.bytesLoaded / _netStream.bytesTotal;

174

}   

175

176

//trace(_netStream.bytesLoaded + "/" + _netStream.bytesTotal);

177

}

178

179

180

function RemoveEnterFrameHandler(){

181

if

(silderVideo.IsDragging){

182

removeEventListener(Event.ENTER_FRAME,EnterFrameHandler);

183

}

184

else

{

185

addEventListener(Event.ENTER_FRAME,EnterFrameHandler);

186

}

187

}

188

189

190

function silderVideoMouseDown(e:MouseEvent):

void

{

191

//trace("进度滑块被点击了!");

192

removeEventListener(Event.ENTER_FRAME,EnterFrameHandler);

193

stage.addEventListener(MouseEvent.MOUSE_UP,stageMouseUpHandler);

194

}

195

196

function stageMouseUpHandler(e:MouseEvent):

void

{

197

addEventListener(Event.ENTER_FRAME,EnterFrameHandler);

198

//trace("鼠标MouseUp事件");

199

200

if

(btnPause.visible){

201

_netStream.resume();

202

}

203

stage.removeEventListener(MouseEvent.MOUSE_UP,stageMouseUpHandler); 

204

}

205

206

init();