[Flex]flex的NetStream视频用SoundTransform控制音量大小代码示

[Flex]NetStream动态加载视频利用SoundTransform控制音量

<?xml version="1.0" encoding="utf-8"?> 
<!-- http://blog.flexexamples.com/2008/03/01/displaying-a-video-in-flex-using-the-netconnection-netstream-and-video-classes/ --> 
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
                layout="vertical" 
                verticalAlign="middle" 
                backgroundColor="white" 
                viewSourceURL="srcview/index.html" xmlns:local="*" 
                initialize="init();"> 
 
    <mx:Script> 
        <![CDATA[  
            import mx.controls.Alert;  
            private var urlArr:Array=["http://221.122.36.143/oa/video/1.flv", "http://221.122.36.143/oa/video/2.flv", "http://221.122.36.143/oa/video/p2.mp4"];  
            public function init():void{  
                myVideo.urlArr = urlArr;  
                myVideo.total = 100000;  
//              Alert.show("1==>>"+myVideo.urlArr.length);  
            }  
              
        ]]> 
    </mx:Script> 
 
    <local:mVideo id="myVideo"/> 
 
</mx:Application> 
 
第二个文件  
<?xml version="1.0" encoding="utf-8"?> 
<mx:Panel xmlns:mx="http://www.adobe.com/2006/mxml" 
          creationComplete="setTransformVolume();"> 
    <mx:Script> 
        <![CDATA[  
            import mx.controls.Alert;  
            import mx.events.SliderEvent;  
 
            private var nc:NetConnection;  
            private var ns:NetStream;  
            private var nc2:NetConnection;  
            private var ns2:NetStream;  
            private var video:Video;  
 
            [Bindable]  
            public var urlArr:Array=null;  
            [Bindable]  
            public var total:Number=0;  
 
            private var count:int=0;  
            private var finished1:int=1; //1：播放正在进行；0：播放结束  
            private var finished2:int=0; //1：播放正在进行；0：播放结束  
 
            private var volumeTransform:SoundTransform;  
 
              
            private function setTransformVolume():void{  
                volumeTransform=new SoundTransform();  
                slider.value = volumeTransform.volume;  
                slider.tickInterval = slider.snapInterval;  
                slider.liveDragging = true;  
                slider.addEventListener(Event.CHANGE, volumeChangeHandler);  
                init();  
            }  
              
            private function init():void  
            {  
                Alert.show("" + total);  
                  
                var nsClient:Object={};  
                nc=new NetConnection();  
                nc.connect(null);  
                ns=new NetStream(nc);  
                ns.play(urlArr[count]);  
                ns.client=nsClient;  
                ns.soundTransform=volumeTransform;  
                ns.addEventListener(NetStatusEvent.NET_STATUS, myTest1);  
                  
                video=new Video();  
                video.name="video1";  
                video.width=uic.width;  
                video.height=uic.height;  
                video.attachNetStream(ns);  
                if (uic.getChildByName("video1") != null)  
                {  
                    uic.removeChild(uic.getChildByName("video1"));  
                }  
 
                count++;  
            }  
            private function volumeChangeHandler(event:SliderEvent):void {  
                volumeTransform.volume = slider.value;  
                ns.soundTransform = volumeTransform;  
                ns2.soundTransform = volumeTransform;  
            }  
            private function init2():void  
            {  
 
                var nsClient:Object={};  
 
                nc2=new NetConnection();  
                nc2.connect(null);  
                ns2=new NetStream(nc2);  
                ns2.play(urlArr[count]);  
                ns2.client=nsClient;  
                ns2.soundTransform=volumeTransform;  
                ns2.addEventListener(NetStatusEvent.NET_STATUS, myTest2);  
                  
                video=new Video();  
                video.name="video2";  
                video.width=uic.width;  
                video.height=uic.height;  
                video.attachNetStream(ns2);  
                if (uic.getChildByName("video2") != null)  
                {  
                    uic.removeChild(uic.getChildByName("video2"));  
                }  
                count++;  
            }  
 
            private function myTest1(event:NetStatusEvent):void  
            {  
                trace("count1==>>" + count);  
                trace("count1 onStatus:" + event.info.code);  
                if (event.info.code == "NetStream.Buffer.Full")  
                {  
                    if (count == 1)  
                    {  
                        uic.addChild(video);  
                        init2();  
                    }  
                    if (finished2 == 1)  
                    {  
                        ns.seek(0);  
                        ns.pause();  
                    }  
                }  
                else if (event.info.code == "NetStream.Play.Stop")  
                {  
                    finished1=0;  
                    finished2=1;  
                    uic.addChild(video);  
                    ns2.togglePause();  
                    if (count <= urlArr.length)  
                    {  
                        init();  
                    }  
 
                }  
 
            }  
 
            private function myTest2(event:NetStatusEvent):void  
            {  
                trace("count2==>>" + count);  
                trace("count2 onStatus:" + event.info.code);  
                if (event.info.code == "NetStream.Buffer.Full")  
                {  
                    if (finished1 == 1)  
                    {  
                        ns2.seek(0);  
                        ns2.pause();  
                    }  
                }  
                else if (event.info.code == "NetStream.Play.Stop")  
                {  
                    finished2=0;  
                    finished1=1;  
                    uic.addChild(video);  
                    ns.togglePause();  
                    if (count <= urlArr.length)  
                    {  
                        init2();  
                    }  
                }  
 
            }  
 
            public function stopVideo():void  
            {  
                uic.stop();  
            }  
        ]]> 
    </mx:Script> 
    <mx:VideoDisplay id="uic" 
                     width="550" 
                     height="450" 
                     volume="{slider.value}"/> 
 
    <mx:ControlBar> 
        <mx:HSlider id="slider" 
                    minimum="0.0" 
                    maximum="1.0" 
                    snapInterval="0.1" 
                    tickInterval="0.1" 
                    liveDragging="true"/> 
        <mx:Button label="Play/Pause" 
                   click="uic.play();"/> 
        <mx:Button label="Rewind" 
                   click="stopVideo();"/> 
    </mx:ControlBar> 
</mx:Panel>