flex连接摄像头

<?xml version="1.0" encoding="utf-8"?>  
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="750" height="600" creationComplete="initApp()">  
	<mx:Style>  
		Alert{font-size:12px;}  
	</mx:Style>  
	<mx:Script> 
		<![CDATA[  
			import mx.events.CloseEvent;  
			import mx.rpc.events.FaultEvent;  
			import mx.rpc.events.ResultEvent;  
			import mx.controls.Alert;  
			private static const DEFAULT_CAMERA_WIDTH:Number = 260; //摄像头显示宽度  
			private static const DEFAULT_CAMERA_HEIGHT:Number = 220; //摄像头显示高度  
			// private static const DEFAULT_WEBSERVICE_URL:String = "http://localhost:1888/Web/TestWebService.asmx?WSDL"; //WebService地址  
			
			private var m_camera:Camera; //定义一个摄像头  
			private var m_localVideo:Video; //定义一个本地视频  
			private var m_pictureBitmapData:BitmapData //定义视频截图  
			[Bindable]  
			private var m_pictureData:String;  
			
			private function initApp():void  
			{  
				t_btn_Shooting.enabled = false;  
				t_ban_Save.enabled = false;  
				initCamera();  
			}  
			
			//初始化摄像头  
			private function initCamera():void  
			{  
				m_camera = Camera.getCamera();  
				if(m_camera != null)  
				{  
					m_camera.addEventListener(StatusEvent.STATUS,__onCameraStatusHandler);  
					
					m_camera.setMode(DEFAULT_CAMERA_WIDTH,DEFAULT_CAMERA_HEIGHT,30);  
					m_localVideo = new Video();  
					m_localVideo.width = DEFAULT_CAMERA_WIDTH;  
					m_localVideo.height = DEFAULT_CAMERA_HEIGHT;  
					m_localVideo.attachCamera(m_camera);  
					t_vd_Video.addChild(m_localVideo);  
				}  
				else  
				{  
					Alert.show("没有找到摄像头，是否重新查找。","提示：",Alert.OK|Alert.NO,this,__InitCamera);  
					return;  
				}  
			}  
			
			//拍照按钮事件，进行视频截图  
			private function SnapshotPicture():void  
			{  
				m_pictureBitmapData = new BitmapData(DEFAULT_CAMERA_WIDTH,DEFAULT_CAMERA_HEIGHT);  
				
				m_pictureBitmapData.draw(t_vd_Video,new Matrix());  
				var m_pictureBitmap:Bitmap = new Bitmap(m_pictureBitmapData);  
				t_img_Picture.addChild(m_pictureBitmap);  
				
				t_panel_Picture.visible = true;  
				t_ban_Save.enabled = true;  
			}  
			
			//保存按钮事件，保存视频截图  
			//通过WebService保存  
			//     private function SavePicture():void  
			//    {  
			//                 m_pictureData = "";  
			//                 for(var i:int = 0; i < DEFAULT_CAMERA_WIDTH; i++)  
			//                 {  
			//                    for(var j:int = 0; j < DEFAULT_CAMERA_HEIGHT; j++)  
			//                     {  
			//                        if(m_pictureData.length > 0)  
			//                        {  
			//				m_pictureData += "," + m_pictureBitmapData.getPixel32(i,j).toString();  
			//                         }  
			//                         else  
			//                         {  
			//                             m_pictureData = m_pictureBitmapData.getPixel32(i,j).toString();  
			//                         }  
			//                    }  
			//                 }  
			//               //  t_ws_SavePicture.SavePicture.send();  
			//             }  
			
			//检测摄像头权限事件  
			private function __onCameraStatusHandler(event:StatusEvent):void  
			{  
				if(!m_camera.muted)  
				{  
					t_btn_Shooting.enabled = true;  
				}  
				else  
				{  
					Alert.show("无法链接到活动摄像头，是否重新检测。","提示：",Alert.OK|Alert.NO,this,__InitCamera);  
				}  
				m_camera.removeEventListener(StatusEvent.STATUS,__onCameraStatusHandler);  
			}  
			
			//当摄像头不存在，或连接不正常时重新获取  
			private function __InitCamera(event:CloseEvent):void  
			{  
				if(event.detail == Alert.OK)  
				{  
					initApp();  
				}  
			}  
			
			//WebService保存图片成功事件  
			private function __onSavePictureResult(event:ResultEvent):void  
			{  
				//trace(event.result);  
				if(event.result.toString() == "保存成功")  
				{  
					Alert.show(event.result.toString(),"提示",Alert.OK,this,__onAlertCloseHandler);  
				}  
				else  
				{  
					Alert.show(event.result.toString(),"提示",Alert.OK);  
				}  
			}  
			
			//连接WebService失败事件  
			private function __onSavePictureFault(event:FaultEvent):void  
			{  
				//Alert.show(event.fault.toString(),"提示",Alert.OK);  
				Alert.show("连接WebService失败。","提示",Alert.OK);  
			}  
			
			//保存图片成功后的弹出窗口确认事件  
			private function __onAlertCloseHandler(event:CloseEvent):void  
			{  
				if(event.detail == Alert.OK)  
				{  
					//trace("转向页面");  
				}  
			}  
			
			
			public function SavePicture(){  
				
				var params:URLVariables = new URLVariables();  
				m_pictureData = "";  
				for(var i:int = 0; i < DEFAULT_CAMERA_WIDTH; i++)  
				{  
					for(var j:int = 0; j < DEFAULT_CAMERA_HEIGHT; j++)  
					{  
						if(m_pictureData.length > 0)  
						{  
							m_pictureData += "," + m_pictureBitmapData.getPixel32(i,j).toString();  
						}  
						else  
						{  
							m_pictureData = m_pictureBitmapData.getPixel32(i,j).toString();  
						}  
					}  
				}  
				params.width = DEFAULT_CAMERA_WIDTH;    
				params.height = DEFAULT_CAMERA_HEIGHT;  
				params.bitmap_data = m_pictureData;  
				
				savePictureService.url = "http://localhost:8088/archive/savepicturesrv";  
				savePictureService.send(params);      
				
			}          
		]]>  
	</mx:Script>  
	
	<mx:HTTPService showBusyCursor="true" id="savePictureService" method="POST" resultFormat="xml"  
					fault="__onSavePictureFault(event)" result="__onSavePictureResult(event)"/>     
	<mx:Panel x="10" y="10" width="280" height="300" layout="absolute" title="视频拍照" fontSize="12">  
		<mx:VideoDisplay id="t_vd_Video" width="260" height="220"/>  
		<mx:ControlBar horizontalAlign="right">  
			<mx:Button id="t_btn_Shooting" label="拍照" click="SnapshotPicture()"/>  
		</mx:ControlBar>  
	</mx:Panel>  
	<mx:Panel id="t_panel_Picture" x="298" y="10" width="280" height="300" layout="absolute" title="拍照图片" fontSize="12" visible="false">  
		<mx:Image id="t_img_Picture" x="0" y="0" width="260" height="220"/>  
		<mx:ControlBar   horizontalAlign="right">  
			<mx:Button id="t_ban_Save" label="保存" click="SavePicture()" />  
		</mx:ControlBar>  
	</mx:Panel>  
</mx:Application>