Flex 捕获摄像头拍照（转）

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;
}
}

转载出处：http://blog.csdn.net/anfeind/archive/2009/05/25/4213582.aspx