C# 视频监控系列(3):客户端——连接服务器并预览
2009-04-08 08:24:01 来源:WEB开发网1. 将以下四个dll拷贝到system32目录下,这几个文件均在根目录的Bin目录下
DS40xxSDK.dll
hikclient.dll
HikPlayM4.dll
HikServer.dll
2. 先用自带的客户端Net Client Demo(Soft Decdoe)运行下确认没有问题再根据VC++客户端的例子写对应的C#代码。
3. 最好装一个Microsoft Visual C++ 6.0,这样能把VC++的例子跑起来并调试。注意他是Win32 Release的,需要切换至Win32 Debug模式才能断点调试!!
4. 打开API文档Hikvision 板卡网络开发包编程手册V4.7,在Doc目录下。
5. 代码分析和编写对应的C#代码
5.1 第二章编程说明中第六条我们可以看到API依次调用的顺序,可以根据函数名直接在代码中搜索调用顺序,不难发现,在HKVisionDlg.cpp的OnInitDialog方法能看到如下两行代码:
MP4_ClientSetNetPort(5050,6050);
MP4_ClientStartup(WM_MYCOMMAND,this->m_hWnd);
很明显这是调用了API,其他代码就不用管了,那么我把这代码翻译到C# WinForm的Form1_Load事件里面,并且也这样调用API(封装好的SDK请看上篇文章):
PcHikClient.MP4_ClientSetNetPort(5050, 6050);
PcHikClient.MP4_ClientStartup(PcHikClient.WM_USER + 1, this.Handle);
5.2 根据界面上Start按钮事件能找到关键的连接上服务器,如下:
if (m_showmode == 0)
{
MP4_ClientSetShowMode(NORMALMODE,0);
}
else
{
MP4_ClientSetShowMode(OVERLAYMODE,COLORREF(0xff00ff));
}
nn1=nn2=nn3=nn4 = -1;
int itemp = m_shownum;
char ips[256];
sprintf(ips,"%s",m_ipadd);
hWnd5 = m_video5.GetSafeHwnd();//
aa5.m_bRemoteChannel = 0;
switch(m_linktype)
{
case 0:
aa5.m_bSendMode = TCPMODE;
break;
case 1:
aa5.m_bSendMode = UDPMODE;
break;
case 2:
aa5.m_bSendMode = MULTIMODE;
break;
case 3:
aa5.m_bSendMode = DIALING;
break;
case 4:
aa5.m_bSendMode = AUDIODETACH;
break;
default:
aa5.m_bSendMode = TCPMODE;
break;
}
aa5.m_sIPAddress = ips;
//2003.12.2
//如果想只录像,而不进行解码,可以将m_hShowVideo设置成NULL
//If you just want to record without decode on client side,
//please set m_hShowVideo as NULL
#if defined RECORD_ONLY
aa5.m_hShowVideo = NULL;
#else
aa5.m_hShowVideo = hWnd5;
#endif
// add 2003.12.2
//m_nImgFormat 指明想要获取的图像格式
//依赖服务器端的设置。如果不设置,获取的是服务器的缺省格式
//m_nImgFormat indicates the picture format you get on the client side,
//It depends on the setting of Server side.
aa5.m_nImgFormat = 0; // request CIF format
// aa5.m_nImgFormat = 1; // request QCIF format
aa5.m_sUserName = "123";
aa5.m_sUserPassword="w";
aa5.m_bUserCheck = TRUE;
MP4_ClientSetTTL(64);
nn1 = MP4_ClientStart(&aa5,ReadDataCallBack);
if (nn1 == -1)
{
MessageBox("error");
return;
}
//
BOOL breturn;
breturn = MP4_ClientRigisterDrawFun(nn1,DrawFun,0);
switch(m_delaytype)
{
case 0:
MP4_ClientSetBufferNum(nn1,40);
MP4_ClientSetPlayDelay(nn1,580);
break;
case 1:
MP4_ClientSetBufferNum(nn1,15);
MP4_ClientSetPlayDelay(nn1,40);
break;
case 2:
MP4_ClientSetBufferNum(nn1,15);
MP4_ClientSetPlayDelay(nn1,0);
break;
case 3:
MP4_ClientSetBufferNum(nn1,0);
MP4_ClientSetPlayDelay(nn1,0);
break;
}
// MP4_ClientThrowBFrame(nn1,m_bframenum);
MP4_ClientSetCapPicCallBack(nn1,CapPicFun);
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