flex 在线录制视频语音

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" height="312" width="328" creationComplete="init()">
<mx:Script>
 <![CDATA[
  //预定义声明
  import mx.controls.Alert;
  import mx.events.SliderEvent;
 
  //创建一个基本的网络连接对象
  private var vi:Video;
  private var cam:Camera;      //定义一个摄像头
  private var inNs:NetStream;
  private var outNs:NetStream;
  private var nc:NetConnection;
  private var mic:Microphone; //定义一个麦克风
 
  private var _duration:Number;            //视频播放时间
  private var playPosition:Number;         //定义播放进度位置
  private var soundPosition:Number;    //定义声音大小控制条的位置
  private var flag:Boolean = false;       
  private var lastVideoName:String = "";   //视频录制后保存的名字
  private var _url:String = "rtmp://localhost/oflaDemo";
 
  public function init():void{
   setupCamera();    //初始化摄像头信息
  }
  //开始录制按扭点击
  public function clickConnect():void{
    nc = new NetConnection();
    nc.client = this ;
    nc.addEventListener(NetStatusEvent.NET_STATUS,nsHandler);
             nc.connect(_url);         //连接red5服务器
  } 
  public function nsHandler(evt:NetStatusEvent):void{
   if (evt.info.code == "NetConnection.Connect.Success"){           //如果连接成功
    playClick();
    }else{
     Alert.show("连接失败");   
    }   
  }
  //开始录制
  public function playClick():void{  
   if(vi != null){
    vi.clear();
    vdisplay.removeChild(vi);
    vi = new Video();
    vi.width = 320;
    vi.height = 240;
    vi.attachCamera(cam);
       vdisplay.addChild(vi);
   }
   outNs = new NetStream(nc);      
   outNs.attachCamera(cam);   //把摄像头存入outNs
   outNs.attachAudio(mic);          //把麦克风存入outNs
   lastVideoName = "red5RecordDemo_" + Math.random()+getTimer();
   outNs.publish(lastVideoName, "record");
     
   startRec.enabled = false;
   stopRec.enabled = true;  
  } 
  //停止录制
  public function stopClick():void{
   //关闭ns与red5的连接
   outNs.close();
   vi.clear();
   vdisplay.removeChild(vi); 
   //锁定开始按键使其生效
   startRec.enabled = true;
   //锁定停止按键使其失效
   stopRec.enabled = false;
  } 
  //录制完以后播放
  public function playLastVideo():void{
     if(nc!=null){
      addEventListener(Event.ENTER_FRAME,onEnterFrame);
       inNs = new NetStream(nc);
    //定义onMetaData，获取视频相关数据
    var customClient:Object = new Object();
    customClient.onMetaData = function(metadata:Object):void{
     _duration = metadata.duration; //获取视频持续时间
     t_sh.maximum = _duration;
    }
    inNs.client = customClient;
    //删除原_localVideo，便于在录制和播放视频之间切换
    vi = new Video();
    vi.width = 320;
    vi.height = 240;
    vi.attachNetStream(inNs);
    vdisplay.addChild(vi);
    inNs.play(lastVideoName+".flv");
    addEventListener(Event.ENTER_FRAME,onEnterFrame);
     }
  }
 
  public function onBWDone():void {
        }
 
  //初始化摄像头
  public function setupCamera():void{
   //启动摄像头
   cam = Camera.getCamera();
   if(cam != null){
    cam.addEventListener(StatusEvent.STATUS,onStatusHandler);
    cam.addEventListener(ActivityEvent.ACTIVITY,onActiveHandler);
    cam.setMode(320,240,30);
    cam.setQuality(0,70);  //设置清晰度
    vi = new Video();
    vi.width = 320;
    vi.height = 240;
    vi.attachCamera(cam);
    vdisplay.addChild(vi);

   }
   mic = Microphone.getMicrophone();
   if(mic != null){
    mic.setSilenceLevel(0,-1); //设置麦克风保持活动状态并持续接收集音频数据
    mic.gain = 80; //设置麦克风声音大小
   }
  }
 
  private function onActiveHandler(event:ActivityEvent):void
  {
         if(!cam.muted){   //判断摄像头存不存在
            startRec.enabled = true;
       }else{
        Alert.show("错误：无法链接到活动摄像头！")
       }
       cam.removeEventListener(StatusEvent.STATUS,onStatusHandler);
  }
 
  private function onStatusHandler(event:StatusEvent):void{
   if(!cam.muted){   //判断摄像头存不存在
    startRec.enabled = true;
   }else{
    Alert.show("错误：无法链接到活动摄像头！")
   }
   cam.removeEventListener(StatusEvent.STATUS,onStatusHandler);
  }
 
  public function thumbPress(event:SliderEvent):void{
      inNs.togglePause();
   removeEventListener(Event.ENTER_FRAME,onEnterFrame);
  }
  private function thumbChanges(event:SliderEvent):void{
    playPosition = t_sh.value;        //当前播放视频进度的位置=当前播放进度条的位置
    inNs.seek(playPosition);
    addEventListener(Event.ENTER_FRAME,onEnterFrame);
  }
  private function thumbRelease(event:SliderEvent):void{      //释放mouse后执行
   inNs.seek(playPosition);                             //查找当前进度条位置
   inNs.togglePause();
      addEventListener(Event.ENTER_FRAME,onEnterFrame);
  }
  public function onEnterFrame(event:Event):void{
   if(_duration > 0 && inNs.time > 0){ //如果视频时间和正在播放视频的时间大于0
    t_sh.value =inNs.time;
    lbtime.text = formatTimes(inNs.time) + " / "+ formatTimes(_duration);
   }  
   if(formatTimes(inNs.time)==formatTimes(_duration)){    //如果播放完毕，则关毕流,初始化摆放时间的label
      if(flag==true){        //如果是加载，就不执行 ||false代表是加载，true代表是播放结束
     removeEventListener(Event.ENTER_FRAME,onEnterFrame);
     inNs.close();   
     lbtime.text = "0:00 / "+ formatTimes(_duration);
    }
       setTimeout(function():void{flag = true;},1000);
   }
   }
  //时间格式操作
  private function formatTimes(value:int):String{
   var result:String = (value % 60).toString();
   if (result.length == 1){
    result = Math.floor(value / 60).toString() + ":0" + result;
   } else {
    result = Math.floor(value / 60).toString() + ":" + result;
   }
   return result;
  } 
  //声音音量控制
  private function sound_thumbChanges(event:SliderEvent):void{
   soundPosition = th_sound.value;
  }
  private function sound_thumbRelease(event:SliderEvent):void{
   vdisplay.volume = soundPosition;
  }

 ]]>
</mx:Script>
 <mx:VideoDisplay x="0" y="0" width="324.5" height="240" id="vdisplay"/>
 <mx:Button x="10" y="250" label="开始录制" id="startRec" click="clickConnect()" enabled="false" />
 <mx:Button x="10" y="280" label="停止录制" width="70" id="stopRec" click="stopClick()" enabled="false" />
 <mx:Button x="253" y="268" label="播放" click="playLastVideo()"  />
 <mx:HSlider x="98" y="248" width="143" id="t_sh" thumbPress="thumbPress(event)" thumbRelease="thumbRelease(event)" change="thumbChanges(event)"/>
 <mx:Label x="237" y="242" text="0:00/0:00" width="89" textAlign="center" height="18" id="lbtime"/>
 <mx:HSlider x="98" y="278" width="91" id="th_sound" minimum="0" maximum="1" value="{vdisplay.volume}" change="sound_thumbChanges(event)" thumbRelease="sound_thumbRelease(event)"/>
 <mx:Label x="187" y="270" text="sound" height="20" width="44" textAlign="center"/>
</mx:Application>