C# 用socket，TCP，NetworkStream做的一个Image对象的传送，出错，请高手帮忙看一下那里的问题
我的代码：public void Listen()
{
IPEndPoint ipep=new IPEndPoint(IPAddress.Any,9050);
Socket ListenSock=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
ListenSock.Bind(ipep);
ListenSock.Listen(10);
Socket client=ListenSock.Accept();
IPEndPoint clientipep=(IPEndPoint)client.RemoteEndPoint;
NetworkStream ns=new NetworkStream(client);
StreamReader sr=new StreamReader(ns);
this.picBoxRemoteVideo.Image=Image.FromStream(ns);
}
public void sentMsg(Image myPic)
{
IPEndPoint ipep=new IPEndPoint(IPAddress.Parse(this.txtBRemoteIP.Text),9050);
Socket SendSocket=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
SendSocket.Connect(ipep);
NetworkStream ns=new NetworkStream(SendSocket);
//把图片写入流ns
myPic.Save(ns,ImageFormat.Jpeg);
ns.Flush();
SendSocket.Close();
}
出错：
GDI+ 中发生一般性错误。发生在myPic.Save(ns,ImageFormat.Jpeg);这句
使用了无用的参数：this.picBoxRemoteVideo.Image=Image.FromStream(ns); --------------------编程问答-------------------- 你把ns的数据存储到 byte[] 里面，然后再存储照片；
--------------------编程问答-------------------- to：iyori
为什么要这么做啊？ 先把ns存到byte[]里面，ns里面没有数据也存吗？ --------------------编程问答-------------------- 有另一种方法，来实现
把你这个图片用Graphics对象缩小，然后再发送出去就可以了，一些视频就是这样做的。代码如下：
using System;--------------------编程问答-------------------- 这是序列化的代码：
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.IO;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
...
//远端客户机
private EndPoint remotePoint=new IPEndPoint(IPAddress.Any,0);
private Thread myThread;
public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
myThread=new Thread(new ThreadStart(ListenUdp));
myThread.Start();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if(myThread!=null){myThread.Abort();}
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
...
public webcam wcam=null;
private void Form1_Load(object sender, System.EventArgs e)
{
wcam=new webcam(panelLocalVideo.Handle,0,0,this.panelLocalVideo.Width,this.panelLocalVideo.Height);
wcam.Start();
}
private void btnSend_Click(object sender, System.EventArgs e)
{
this.timer1.Enabled=true;
this.timer1.Interval=100;
}
public void ListenTcp()
{
IPEndPoint ipep=new IPEndPoint(IPAddress.Any,9050);
Socket ListenSock=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
ListenSock.Bind(ipep);
ListenSock.Listen(10);
Socket client=ListenSock.Accept();
IPEndPoint clientipep=(IPEndPoint)client.RemoteEndPoint;
NetworkStream ns=new NetworkStream(client);
while(true)
{
this.picBoxRemoteVideo.Image=Image.FromStream(ns);
}
}
public void sentMsgTcp(Image myPic)
{
IPEndPoint ipep=new IPEndPoint(IPAddress.Parse(this.txtBRemoteIP.Text),9050);
Socket SendSocket=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
SendSocket.Connect(ipep);
NetworkStream ns=new NetworkStream(SendSocket);
//把图片以Bmp格式写入流ns
myPic.Save(ns,ImageFormat.Jpeg);
ns.Flush();
SendSocket.Close();
}
public void ListenUdp()
{
byte[] data;
int recv;
IPEndPoint ipep=new IPEndPoint(IPAddress.Any,9050);
Socket ListenSock=new Socket(AddressFamily.InterNetwork,SocketType.Dgram,ProtocolType.Udp);
ListenSock.Bind(ipep);
while(true)
{
data=new byte[20000000];
recv=ListenSock.ReceiveFrom(data,ref remotePoint);
//反序列化
object msgObj=FormatterHelper.Deserialize(data);
Bitmap mybm=(Bitmap)msgObj;
//把图片放大充满容器，并给容器
this.picBoxRemoteVideo.Image=ChangImage(mybm,this.picBoxRemoteVideo.Width,this.picBoxRemoteVideo.Height);
}
}
public void sentMsgUdp(Image myPic)
{
byte[] sendData=new byte[20000000];
IPEndPoint ipep=new IPEndPoint(IPAddress.Parse(this.txtBRemoteIP.Text),9050);
Socket SendSocket=new Socket(AddressFamily.InterNetwork,SocketType.Dgram,ProtocolType.Udp);
sendData = FormatterHelper.Serialize(myPic);
SendSocket.SendTo(sendData,sendData.Length,SocketFlags.None,ipep);
SendSocket.Close();
}
private void timer1_Tick(object sender, System.EventArgs e)
{
IDataObject data;
Image bmap;
// Copy image to clipboard
webcam.SendMessage(wcam.hWndC,webcam.WM_CAP_EDIT_COPY, 0, 0);
// Get image from clipboard and convert it to a bitmap
data = Clipboard.GetDataObject();
if (data.GetDataPresent(typeof(System.Drawing.Bitmap)))
{
bmap = ((Image)(data.GetData(typeof(System.Drawing.Bitmap))));
//把图片变小，供传送
bmap=ChangImage(bmap,150,150);
sentMsgUdp(bmap);
}
}
//把原Image转成小的Image
public Image ChangImage(Image imageIn, int towidth,int toheight){
//新建一个bmp图片
Image bitmap = new Bitmap(towidth, toheight);
//新建一个画板
Graphics g = Graphics.FromImage(bitmap);
//设置高质量插值法
g.InterpolationMode = InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = SmoothingMode.HighQuality;
//清空画布并以透明背景色填充
g.Clear(Color.Transparent);
//在指定位置并且按指定大小绘制原图片的指定部分
g.DrawImage(imageIn, new Rectangle(0, 0, towidth, toheight),new Rectangle(0, 0, imageIn.Width,imageIn.Height),GraphicsUnit.Pixel);
return bitmap;
}
using System;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
namespace VideoTransmission
{
/// <summary>
/// FormatterHelper 序列化，反序列化消息的帮助类
/// </summary>
public class FormatterHelper
{
public static byte[] Serialize(object obj)
{
BinaryFormatter binaryF = new BinaryFormatter();
MemoryStream ms = new MemoryStream(1024*10);
binaryF.Serialize(ms, obj);
ms.Seek(0, SeekOrigin.Begin);
byte[] buffer = new byte[(int)ms.Length];
ms.Read(buffer, 0, buffer.Length);
ms.Close();
return buffer;
}
public static object Deserialize(byte[] buffer)
{
BinaryFormatter binaryF = new BinaryFormatter();
MemoryStream ms = new MemoryStream(buffer, 0, buffer.Length, false);
object obj = binaryF.Deserialize(ms);
ms.Close();
return obj;
}
}
}
补充：.NET技术 , C#
