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  • 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;
             }
         }
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  • 原文地址:https://www.cnblogs.com/anfeind/p/1489375.html
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