打造一個多人串流系統 adobe_media_server part1

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
                       xmlns:s="library://ns.adobe.com/flex/spark" 
                       xmlns:mx="library://ns.adobe.com/flex/mx"
                       creationComplete="windowedapplication1_creationCompleteHandler(event)">
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <fx:Script>

        <![CDATA[
            import flash.display.MovieClip;
            import flash.events.NetStatusEvent;
            import flash.media.Camera;
            import flash.media.Microphone;
            import flash.media.Video;
            import flash.net.NetConnection;
            import flash.net.NetStream;

            import mx.core.UIComponent;
            import mx.events.FlexEvent;
            var nc:NetConnection;
            var ns:NetStream;
            var nsPlayer:NetStream;
            var vid:Video;
            var vidPlayer:Video;
            var cam:Camera;
            var mic:Microphone;

            var screen_w:int=320;
            var screen_h:int=240;

            public function onBWDone():void { 
                trace("11"); 
            } 
            public function simplest_as3_rtmp_streamer()
            {
                nc = new NetConnection();
                nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
                nc.client ={ onBWDone: function():void{} };

                nc.connect("rtmp://localhost/live");

            }


            private function onNetStatus(event:NetStatusEvent):void{
                trace(event.info.code);
                if(event.info.code == "NetConnection.Connect.Success"){
                    publishCamera();
                    displayPublishingVideo();
                    displayPlaybackVideo();
                }
            }


            private function publishCamera() {

                //Cam

                cam = Camera.getCamera();


                /**
                 * public function setMode(width:int, height:int, fps:Number, favorArea:Boolean = true):void  
                 *  width:int — The requested capture width, in pixels. The default value is 160.  
                 *  height:int — The requested capture height, in pixels. The default value is 120.  
                 *  fps:Number — The requested capture frame rate, in frames per second. The default value is 15.  
                 */
                cam.setMode(640, 480,60);  

                /**
                 * public function setKeyFrameInterval(keyFrameInterval:int):void
                 * The number of video frames transmitted in full (called keyframes) instead of being interpolated by the video compression algorithm.
                 * The default value is 15, which means that every 15th frame is a keyframe. A value of 1 means that every frame is a keyframe. 
                 * The allowed values are 1 through 300. 
                 */
                cam.setKeyFrameInterval(60);

                /**
                 * public function setQuality(bandwidth:int, quality:int):void  
                 * bandwidth:int — Specifies the maximum amount of bandwidth that the current outgoing video feed can use, in bytes per second (bps).   
                 *    To specify that the video can use as much bandwidth as needed to maintain the value of quality, pass 0 for bandwidth.   
                 *    The default value is 16384.  
                 * quality:int — An integer that specifies the required level of picture quality, as determined by the amount of compression   
                 *     being applied to each video frame. Acceptable values range from 1 (lowest quality, maximum compression) to 100   
                 *    (highest quality, no compression). To specify that picture quality can vary as needed to avoid exceeding bandwidth,   
                 *    pass 0 for quality.  
                 */
                cam.setQuality(0,100); 

                /**
                 * public function setProfileLevel(profile:String, level:String):void
                 * Set profile and level for video encoding. 
                 * Possible values for profile are H264Profile.BASELINE and H264Profile.MAIN. Default value is H264Profile.BASELINE.
                 * Other values are ignored and results in an error.
                 * Supported levels are 1, 1b, 1.1, 1.2, 1.3, 2, 2.1, 2.2, 3, 3.1, 3.2, 4, 4.1, 4.2, 5, and 5.1.
                 * Level may be increased if required by resolution and frame rate.
                 */
                //var h264setting:H264VideoStreamSettings = new H264VideoStreamSettings();  
                // h264setting.setProfileLevel(H264Profile.MAIN, 4);   


                //Mic

                mic = Microphone.getMicrophone();

                /*
                * The encoded speech quality when using the Speex codec. Possible values are from 0 to 10. The default value is 6. 
                * Higher numbers represent higher quality but require more bandwidth, as shown in the following table. 
                * The bit rate values that are listed represent net bit rates and do not include packetization overhead. 
                * ------------------------------------------
                * Quality value | Required bit rate (kbps)
                *-------------------------------------------
                *      0        |       3.95 
                *      1        |       5.75 
                *      2        |       7.75 
                *      3        |       9.80 
                *      4        |       12.8 
                *      5        |       16.8 
                *      6        |       20.6 
                *      7        |       23.8 
                *      8        |       27.8 
                *      9        |       34.2 
                *      10       |       42.2 
                *-------------------------------------------
                */
                mic.encodeQuality = 9;  

                /* The rate at which the microphone is capturing sound, in kHz. Acceptable values are 5, 8, 11, 22, and 44. The default value is 8 kHz   
                * if your sound capture device supports this value. Otherwise, the default value is the next available capture level above 8 kHz that   
                * your sound capture device supports, usually 11 kHz.  
                *
                */
                mic.rate = 44;  


                ns = new NetStream(nc);

                //H.264 Setting
                //ns.videoStreamSettings = h264setting; 
                ns.attachCamera(cam);
                ns.attachAudio(mic);
                ns.publish("myCamera", "live");


            }


            private function displayPublishingVideo():void {
                vid = new Video(screen_w, screen_h);
                vid.x = 10;
                vid.y = 10;
                vid.attachCamera(cam);

                var tmp:UIComponent = new UIComponent();
                tmp.addChild(vid);
                canvas2.addElement(tmp);
            }


            private function displayPlaybackVideo():void{
                nc.client ={ onBWDone: function():void{} };

                nsPlayer = new NetStream(nc);
                nsPlayer.bufferTime = 0.1;
                nsPlayer.play("myCamera");
                vidPlayer = new Video(screen_w, screen_h);
                vidPlayer.x = screen_w + 20;
                vidPlayer.y = 10;

                vidPlayer.attachNetStream(nsPlayer);
                var tmp:UIComponent = new UIComponent();
                tmp.addChild(vidPlayer);
                canvas.addElement(tmp);

            }

            protected function windowedapplication1_creationCompleteHandler(event:FlexEvent):void
            {
                // TODO Auto-generated method stub
                nc = new NetConnection();
                nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
                nc.connect("rtmp://localhost:1935/live");
                nc.ad
            }

        ]]>
    </fx:Script>
    <mx:Canvas id="canvas" x="12" y="22" width="255" height="207">

    </mx:Canvas>

    <mx:Canvas id="canvas2" x="50" y="22" width="255" height="207">

    </mx:Canvas>
</s:Application>