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());
  }
}