Flex 捕获摄像头拍照

Flex完整代码：

程序代码
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="388" height="222" 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 = 160; //摄像头显示宽度
             private static const DEFAULT_CAMERA_HEIGHT:Number = 120; //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");
                 }
             }
         ]]>
     </mx:Script>
     <mx:WebService id="t_ws_SavePicture" showBusyCursor="true" wsdl="{DEFAULT_WEBSERVICE_URL}" useProxy="false" result="__onSavePictureResult(event)" fault="__onSavePictureFault(event)">
         <mx:operation name="SavePicture">
             <mx:request>
                 <pic_width>{DEFAULT_CAMERA_WIDTH}</pic_width>
                 <pic_height>{DEFAULT_CAMERA_HEIGHT}</pic_height>
                 <bitmap_data>{m_pictureData}</bitmap_data>
             </mx:request>
         </mx:operation>
     </mx:WebService>
     <mx:Panel x="10" y="10" width="180" height="200" layout="absolute" title="视频拍照" fontSize="12">
         <mx:VideoDisplay id="t_vd_Video" width="160" height="120"/>
         <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="198" y="10" width="180" height="200" layout="absolute" title="拍照图片" fontSize="12" visible="false">
         <mx:Image id="t_img_Picture" x="0" y="0" width="160" height="120"/>
         <mx:ControlBar   horizontalAlign="right">
             <mx:Button id="t_ban_Save" label="保存" click="SavePicture()" />
         </mx:ControlBar>
     </mx:Panel>
</mx:Application>

C# WebService代码：


程序代码

     [WebMethod]
     public string SavePicture(int pic_width, int pic_height, string bitmap_data)
     {
         try
         {
             Bitmap m_pic = new Bitmap(pic_width, pic_height);
             string[] m_tempPics = bitmap_data.Split(',');
            
             for (int i = 0; i < pic_width; i++)
             {
                 for (int j = 0; j < pic_height; j++)
                 {
                     uint pic_argb = (uint)long.Parse(m_tempPics[i * pic_height + j]);
                     int pic_a = (int)(pic_argb >> 24 & 0xFF);
                     int pic_r = (int)(pic_argb >> 16 & 0xFF);
                     int pic_g = (int)(pic_argb >> 8 & 0xFF);
                     int pic_b = (int)(pic_argb & 0xFF);

                     m_pic.SetPixel(i, j, Color.FromArgb(pic_a, pic_r, pic_g, pic_b));
                 }
             }

             string filePath = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "Photo\\";

             //判断路径是否存在,若不存在则创建路径
             DirectoryInfo upDir = new DirectoryInfo(filePath);
             if (!upDir.Exists)
             {
                 upDir.Create();
             }

             //生成随机文件名
             Random objRand = new Random();
             DateTime date = DateTime.Now;

             //生成随机文件名
             string saveName = date.Year.ToString() + date.Month.ToString() + date.Day.ToString() + date.Hour.ToString() + date.Minute.ToString() + date.Second.ToString() + Convert.ToString(objRand.Next(99) * 97 + 100);
             string fileName = saveName + ".jpg";

             m_pic.Save(filePath + fileName, ImageFormat.Jpeg);
             return "保存成功";
         }
         catch(Exception ex)
         {
             return ex.Message;
         }
     }