[ActionSprit 3.0] FMS接收正在播放的视频中嵌入的描述性信息(onMetaData事件)

  1 package {
  2     import flash.display.MovieClip;
  3     import flash.net.NetConnection;
  4     import flash.events.NetStatusEvent;
  5     import flash.events.MouseEvent;
  6     import flash.events.AsyncErrorEvent;
  7     import flash.net.NetStream;
  8     import flash.media.Video;
  9     import flash.media.Camera;
 10     import flash.media.Microphone;
 11     import fl.controls.Button;
 12     import fl.controls.Label;
 13     import fl.controls.TextArea;
 14 
 15 
 16     public class Metadata extends MovieClip {
 17         private var nc:NetConnection;
 18         private var ns:NetStream;
 19         private var nsPlayer:NetStream;
 20         private var vid:Video;
 21         private var vidPlayer:Video;
 22         private var cam:Camera;
 23         private var mic:Microphone;
 24         private var clearBtn:Button;
 25         private var startPlaybackBtn:Button;
 26         private var outgoingLbl:Label;
 27         private var incomingLbl:Label;
 28         private var myMetadata:Object;
 29         private var outputWindow:TextArea;
 30 
 31         public function Metadata(){
 32             setupUI();
 33             nc = new NetConnection();
 34             nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
 35             nc.connect("rtmp://localhost/publishlive");
 36         }
 37 
 38         /*
 39          *  Clear the MetaData associated with the stream
 40          */
 41         private function clearHandler(event:MouseEvent):void {
 42             if (ns){
 43                 trace("Clearing MetaData");
 44                 ns.send("@clearDataFrame", "onMetaData");
 45             }
 46         }
 47 
 48         private function startHandler(event:MouseEvent):void {
 49             displayPlaybackVideo();
 50         }
 51 
 52         private function onNetStatus(event:NetStatusEvent):void {
 53             trace(event.target + ": " + event.info.code);
 54             switch (event.info.code)
 55             {
 56                 case "NetConnection.Connect.Success":
 57                     publishCamera();
 58                     displayPublishingVideo();
 59                     break;
 60             }
 61         }
 62 
 63         private function asyncErrorHandler(event:AsyncErrorEvent):void {
 64             trace(event.text);
 65         }
 66 
 67         private function sendMetadata():void {
 68             trace("sendMetaData() called")
 69             myMetadata = new Object();
 70             myMetadata.customProp = "This message is sent by @setDataFrame.";
 71             ns.send("@setDataFrame", "onMetaData", myMetadata);
 72         }
 73 
 74         private function publishCamera():void {
 75             cam = Camera.getCamera();
 76             mic = Microphone.getMicrophone();
 77             ns = new NetStream(nc);
 78             ns.client = this;
 79             ns.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
 80             ns.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler);
 81             ns.attachCamera(cam);
 82             ns.attachAudio(mic);
 83             ns.publish("myCamera", "record");
 84             sendMetadata();
 85 
 86         }
 87 
 88         private function displayPublishingVideo():void {
 89             vid = new Video(cam.width, cam.height);
 90             vid.x = 10;
 91             vid.y = 10;
 92             vid.attachCamera(cam);
 93             addChild(vid);
 94         }
 95 
 96         private function displayPlaybackVideo():void {
 97             nsPlayer = new NetStream(nc);
 98             nsPlayer.client = this;
 99             nsPlayer.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
100             nsPlayer.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler);
101             nsPlayer.play("myCamera", 1);
102             vidPlayer = new Video(cam.width, cam.height);
103             vidPlayer.x = cam.width + 100;
104             vidPlayer.y = 10;
105             vidPlayer.attachNetStream(nsPlayer);
106             addChild(vidPlayer);
107         }
108 
109         private function setupUI():void {
110             outputWindow = new TextArea();
111             outputWindow.move(250, 175);
112             outputWindow.width = 250;
113             outputWindow.height = 150;
114 
115             outgoingLbl = new Label();
116             incomingLbl = new Label();
117             outgoingLbl.width = 150;
118             incomingLbl.width = 150;
119             outgoingLbl.text = "Publishing Stream";
120             incomingLbl.text = "Playback Stream";
121             outgoingLbl.move(30, 150);
122             incomingLbl.move(300, 150);
123 
124             startPlaybackBtn = new Button();
125             startPlaybackBtn.width = 150;
126             startPlaybackBtn.move(250, 345)
127             startPlaybackBtn.label = "View Live Event";
128             startPlaybackBtn.addEventListener(MouseEvent.CLICK, startHandler);
129 
130             clearBtn = new Button();
131             clearBtn.width = 100;
132             clearBtn.move(135,345);
133             clearBtn.label = "Clear Metadata";
134             clearBtn.addEventListener(MouseEvent.CLICK, clearHandler);
135 
136             addChild(clearBtn);
137             addChild(outgoingLbl);
138             addChild(incomingLbl);
139             addChild(startPlaybackBtn);
140             addChild(outputWindow);
141         }
142 
143         public function onMetaData(info:Object):void { 
144             var key:String; 
145             for (key in info){ 
146                 outputWindow.appendText(key + ": " + info[key] + "\n"); 
147             } 
148         }
149         public function onTimeCoordInfo(info:Object):void{
150             for (var key:String in info){ 
151                 trace(key + ": " + info[key] + "\n"); 
152             } 
153         }
154     }
155 }