C#实现IP摄像头的方法

#region IP摄像头代码/// <summary>/// ip摄像头代码/// </summary>  //视频private IntPtr m_hChannel;private IntPtr m_hServer, phPlay;public delegate void MyInvoke(string str);public delegate void OutDelegate(IntPtr hSearch, DVSNET_FILE_TIME pFileTime, DVSNET_FILE_INFO pFileInfo, IntPtr pcontext);//远程视频处理public void BeforeRecordFrame(IntPtr hChannel, ref RECORD_INFO pRecordInfo, ref FRAME_HEADER pFrameHeader, IntPtr pcontext){}DVSNETClient.FileSearchCallback File_SearchCallback; //远程视频回放public void FileSearchCallback(IntPtr hSearch, ref DVSNET_FILE_TIME pFileTime, ref DVSNET_FILE_INFO pFileInfo, IntPtr pcontext){OutText(hSearch, pFileTime, pFileInfo, pcontext);   }public void OutText(IntPtr hSearch, DVSNET_FILE_TIME pFileTime, DVSNET_FILE_INFO pFileInfo, IntPtr pcontext){  if (lvVideo.InvokeRequired)  {   OutDelegate outdelegate = new OutDelegate(OutText);   this.BeginInvoke(outdelegate, new object[] { hSearch, pFileTime, pFileInfo, pcontext });   return;  }  lvVideo.View = View.Details;  lvVideo.FullRowSelect = true;  for (int i = 0; i < pFileInfo.sFileName.Count(); i++)  {   ListViewItem item1 = new ListViewItem(pFileInfo.sFileName, i);   lvVideo.Items.AddRange(new ListViewItem[] { item1 });  } } private void pb_del_video_Click(object sender, EventArgs e) {  this.Close(); } public void SearchNotify(int nDevType,string sServName,string sServSerial,string sUrl,IntPtr MacAddr,ushort wWebPort,ushort wDataPort,string sSubNetMask,string sGateWay,string sMultiIp,string sDNS,ushort wMultiPort,int nChCount,uint bDHCP,IntPtr pcontext) {  string str = Convert.ToString(wDataPort);  //string str2 = sUrl + "(" + str + ")";  string str2 = sUrl;  this.AddText(str2); } //赋值给cmbIP private void AddText(string str) {  MyInvoke method = new MyInvoke(this.AddTextToCmb);  base.BeginInvoke(method, new object[] { str }); } public void AddTextToCmb(string str) {  this.CmbIP.Items.Add(str); } //s搜索服务器 private void btnVideoSearck_Click(object sender, EventArgs e) {     this.CmbIP.Items.Clear();   errornum errornum = DVSNETClient.DVSNET_SearchServers(0xbb8, 1, new DVSNETClient.SearchNotify(this.SearchNotify), base.Handle, IntPtr.Zero);   if (errornum == errornum.DVSNET_ERR_OK)   {    timerVideo.Enabled = true;    btnVideoSearck.Enabled = false;   }   else   {   } } //打开链接 private void btnVideoOpen_Click(object sender, EventArgs e) {  string text = this.CmbIP.Text;  string sServIp = text;  int index = text.IndexOf('(');  if (index != -1)  {   string str3 = new string(text.ToCharArray(), 0, index);   sServIp = str3;  }  errornum errornum = DVSNETClient.DVSNET_OpenServer(this.EdtName.Text, sServIp, Convert.ToUInt16(this.EdtPort.Text), this.EdtUser.Text, this.EdtPassword.Text, ref this.m_hServer, 0, 0);  this.btnVideoOpen.Enabled = false; //不能点击  if (errornum == errornum.DVSNET_ERR_OK)  {   DVSNET_SERVER_INFO dvsnet_server_info = new DVSNET_SERVER_INFO();   MessageBox.Show("打开链接成功！");   dvsnet_server_info = new DVSNET_SERVER_INFO   {    lStructSize = Marshal.SizeOf(dvsnet_server_info)   };   DVSNETClient.DVSNET_GetServerInfo(this.m_hServer, ref dvsnet_server_info);   // this.CmbChannel.Items.Clear();   for (int i = 0; i < dvsnet_server_info.nChnNum; i++)   {    int num3 = i + 1;    // this.CmbChannel.Items.Add(num3.ToString());   }   // this.CmbChannel.SelectedIndex = 0;  }  else  {   MessageBox.Show("打开链接失败,错误码为:" + errornum.ToString());   this.btnVideoOpen.Enabled = true; //不能点击  } } //关闭链接 private void btnVideoClose_Click(object sender, EventArgs e) {  if (this.m_hChannel != IntPtr.Zero)  {   MessageBox.Show("请关闭通道！再关闭链接");  }  else  {   if (this.m_hServer != IntPtr.Zero)   {    DVSNETClient.DVSNET_CloseServer(this.m_hServer);    this.m_hServer = IntPtr.Zero;    this.btnVideoOpen.Enabled = true; //不能点击   }  } } //打开通道 IntPtr selServer = IntPtr.Zero; private void btnVideoOpenChnnel_Click(object sender, EventArgs e) {  this.panelVideo.Visible = true;  this.pannelVideoTwo.Visible = false;  if (this.m_hServer != IntPtr.Zero)  {   this.btnVideoOpenChnnel.Enabled = false; //不能点击   DVSNET_CHANNEL_INFO dvsnet_channel_info = new DVSNET_CHANNEL_INFO();   MessageBox.Show("打开通道成功！请稍候");   dvsnet_channel_info = new DVSNET_CHANNEL_INFO   {    lStructSize = Marshal.SizeOf(dvsnet_channel_info),    nProtocol = 0,    hWndDisplay = this.panelVideo.Handle,    bPlayStart = 1,    dwStreamNo = 0   };   DVSNETClient.DVSNET_OpenChannel(this.m_hServer, Convert.ToUInt16(0), ref dvsnet_channel_info, ref this.m_hChannel);  }  else  {   MessageBox.Show("请打开链接！");  } } //关闭通道 private void btnVideoCloseChnnel_Click(object sender, EventArgs e) {  if (this.m_hChannel != IntPtr.Zero)  {   DVSNETClient.DVSNET_CloseChannel(this.m_hChannel);   MessageBox.Show("关闭通道成功！请稍候");   this.m_hChannel = IntPtr.Zero;   this.btnVideoOpenChnnel.Enabled = true; //不能点击  } } //开始录像 private void btnVideoOn_Click(object sender, EventArgs e) {  try  {   string ss = DateTime.Now.ToString().Replace(":", "-").Replace(" ", "-").Replace("/", "-") + ".asf";     if (this.panelVideo.Visible == false)   {    MessageBox.Show("请切换到打开通道");   }   else   {    if (this.m_hChannel != IntPtr.Zero)    {     this.btnVideoOn.Enabled = false; //不能点击     //DVSNETClient.DVSNET_StartRecord(this.m_hChannel, 1, FILETYPE.FILETYPE_ASF, ss, new DVSNETClient.BeforeRecordFrame(this.BeforeRecordFrame), base.Handle);     DVSNETClient.DVSNET_StartRecord(this.m_hChannel, 1, FILETYPE.FILETYPE_ASF, ss,Before_RecordFrame, base.Handle);    }    else    {     MessageBox.Show("请打开通道！");    }   }  }  catch (Exception ex)  {   MessageBox.Show(ex.ToString());  }   } //停止录像 private void btnStopRec_Click(object sender, EventArgs e) {  DVSNETClient.DVSNET_StopRecord(this.m_hChannel);  MessageBox.Show("已停止录像！");  this.btnVideoOn.Enabled = true; //不能点击 } //打开本地视频 IntPtr phPlayer; private void btnsearch_Click(object sender, EventArgs e) {  try  {   if (m_hServer != IntPtr.Zero)   {    string fName = "";    OpenFileDialog openFileDialog = new OpenFileDialog();    openFileDialog.InitialDirectory = Application.StartupPath;    //注意这里写路径时要用c:/而不是c:    openFileDialog.Filter = "文本文件|*.asf|所有文件|*.asf";    openFileDialog.RestoreDirectory = true;    openFileDialog.FilterIndex = 1;    if (openFileDialog.ShowDialog() == DialogResult.OK)    {     this.panelVideo.Visible = false;     this.pannelVideoTwo.Visible = true;     this.btnsearch.Enabled = false;     fName = openFileDialog.FileName;     IntPtr hDisplayWnd = pannelVideoTwo.Handle;     phPlayer = (IntPtr)0;     DVSNETClient.DVSPLAYER_ReleaseInstance(phPlayer); //释放     DVSNETClient.DVSPLAYER_Stop(phPlayer); //释放本地     errornum aa = DVSNETClient.DVSPLAYER_CreateInstance(hDisplayWnd, ref phPlayer, 0);           aa = DVSNETClient.DVSPLAYER_OpenFile(phPlayer,ref fName, 1);     DVSNETClient.DVSPLAYER_Start(phPlayer);    }    else    {     this.panelVideo.Visible = true;     this.pannelVideoTwo.Visible = false;    }   }   else   {    MessageBox.Show("请打开通道！");   }  }  catch (Exception)  {   throw;  }    } //停止视频播放 private void btnhf_Click(object sender, EventArgs e) {  this.panelVideo.Visible = true;  this.pannelVideoTwo.Visible = false;  IntPtr phPlayer = (IntPtr)0;  DVSNETClient.DVSPLAYER_Stop(phPlayer);  MessageBox.Show("已停止回放录像！");  this.btnsearch.Enabled = true; ;   } //查找远程视频 private void btnSearchbyName_Click(object sender, EventArgs e) {  if (m_hServer == IntPtr.Zero)  {   MessageBox.Show("请先打开链接登录服务器！");   return;  }  this.btnSearchbyName.Enabled = false;  DVSNET_FILE_TIME pStartTime = new DVSNET_FILE_TIME();  pStartTime.lYear = (uint)this.dateTimePicker1.Value.Year;  pStartTime.lMonth = (uint)this.dateTimePicker1.Value.Month;  pStartTime.lDay = (uint)this.dateTimePicker1.Value.Day;  pStartTime.nHour = 0;  pStartTime.nMinute = 0;  DVSNET_FILE_TIME pEndTime = new DVSNET_FILE_TIME();  pEndTime.lYear = (uint)this.dateTimePicker1.Value.Year;  pEndTime.lMonth = (uint)this.dateTimePicker1.Value.Month;  pEndTime.lDay = (uint)this.dateTimePicker1.Value.Day;  pEndTime.nHour = 23;  pEndTime.nMinute = 59;  IntPtr phSearch = IntPtr.Zero;  //if(){}  errornum bak = DVSNETClient.DVSNET_ServerFindFile(m_hServer, 0, 0, (char)0xff, ref pStartTime, ref pEndTime, File_SearchCallback, (IntPtr)0, ref phSearch);  if (bak != errornum.DVSNET_ERR_OK)  {   MessageBox.Show("查找远程视频失败！");  }     this.btnSearchbyName.Enabled = true; } //鼠标双击事件 private void lvVideo_MouseDoubleClick(object sender, MouseEventArgs e) {  this.panelVideo.Visible = false;  this.pannelVideoTwo.Visible = true;     string sa = "";  IntPtr hWnd = pannelVideoTwo.Handle;  if (lvVideo.SelectedItems.Count > 0)  { //this.listView1.SelectedIndices   sa = lvVideo.SelectedItems[0].Text.ToString();  }    DVSNETClient.DVSPLAYER_Stop(phPlayer); //释放本地回放  DVSNETClient.DVSNET_ClosePlayFile(phPlay); //释放远程  phPlay = IntPtr.Zero;  errornum bak = DVSNETClient.DVSNET_PlayFileByName(m_hServer, sa, 1, hWnd, ref phPlay);  if (bak == errornum.DVSNET_ERR_OK)  {   UInt32 value = 0;   DVSNETClient.DVSNET_ControlPlayFile(phPlay, 1, 0, ref value);  }  else  {   MessageBox.Show("回放远程文件 失败,错误码为" + bak.ToString());  } } #endregion //时间控件 1s private void timerVideo_Tick(object sender, EventArgs e) {  int nStatus = 0;  errornum errnum = DVSNETClient.DVSNET_GetSearchStatus(ref nStatus);  if (errnum == errornum.DVSNET_ERR_OK)  {   if (nStatus == 1)   {    btnVideoSearck.Enabled = true;    timerVideo.Enabled = false;    MessageBox.Show("没有启动搜索");   }   if (nStatus == 2)   {    //MessageBox.Show("正在搜索！");   }   if (nStatus == 3)   {    timerVideo.Enabled = false;    btnVideoSearck.Enabled = true;    if (this.CmbIP.Items.Count == 0)    {     MessageBox.Show("没有找到设备！请接上设备");    }    else    {     MessageBox.Show("已找到设备，请选择IP地址");    }   }  }  else  {   MessageBox.Show("DVSNET_GetSearchStatus 失败,错误码为" + errnum.ToString());  }}