实例介绍
【实例简介】
【Demo内容说明】
-------------------------------------
1. 实现预览、抓图(BMP、JPEG)、客户端录像、云台控制(2014-7-4)
2. 设备通道号在界面上手动输入，64路以下NVR的IP通道一般从33开始
3. bin文件夹下为已编译的可执行程序（Release版本）
4. SDK日志保存路径："C:\\SdkLog\\"（2014-7-4）
【注意事项】
------------------------------------
1. 请到海康威视官网下载最新版本设备网络SDK：http://www.hikvision.com/Cn/download_more_401.html
2. 请将设备网络SDK开发包【库文件】里的HCNetSDK.dll、HCCore.dll、HCNetSDKCom文件夹、PlayCtrl.dll、SuperRender.dll、AudioRender.dll、ssleay32.dll、libeay32.dll、hlog.dll、hpr.dll、zlib1.dll、log4cxx.properties等文件均拷贝到bin文件夹下。HCNetSDKCom文件夹（包含里面的功能组件dll库文件）需要和HCNetSDK.dll、HCCore.dll一起加载，放在同一个目录下，且HCNetSDKCom文件夹名不能修改。
3. 如果自行开发软件不能正常实现相应功能，而且程序没有指定加载的dll库路径，请在程序运行的情况下尝试删除HCNetSDK.dll。如果可以删除，说明程序可能调用到系统盘Windows->System32目录下的dll文件，建议删除或者更新该目录下的相关dll文件；如果不能删除，dll文件右键选择属性确认SDK库版本。
4. 如按上述步骤操作后还是不能实现相应功能，请根据NET_DVR_GetLastError返回的错误号判断原因。
【实例截图】
【核心代码】
namespace PreviewDemo
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Preview : System.Windows.Forms.Form
{
private uint iLastErr = 0;
private Int32 m_lUserID = -1;
private bool m_bInitSDK = false;
private bool m_bRecord = false;
private bool m_bTalk = false;
private Int32 m_lRealHandle = -1;
private int lVoiceComHandle = -1;
private string str;
CHCNetSDK.REALDATACALLBACK RealData = null;
CHCNetSDK.LOGINRESULTCALLBACK LoginCallBack = null;
public CHCNetSDK.NET_DVR_PTZPOS m_struPtzCfg;
public CHCNetSDK.NET_DVR_USER_LOGIN_INFO struLogInfo;
public CHCNetSDK.NET_DVR_DEVICEINFO_V40 DeviceInfo;
public delegate void UpdateTextStatusCallback(string strLogStatus, IntPtr lpDeviceInfo);
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.Button btnLogin;
private System.Windows.Forms.Button btnPreview;
private System.Windows.Forms.PictureBox RealPlayWnd;
private TextBox textBoxIP;
private TextBox textBoxPort;
private TextBox textBoxUserName;
private TextBox textBoxPassword;
private Label label5;
private Label label6;
private Label label7;
private Label label8;
private Label label9;
private Label label10;
private Button btnBMP;
private Button btnJPEG;
private Label label11;
private Label label12;
private Label label13;
private TextBox textBoxChannel;
private Button btnRecord;
private Label label14;
private Button btn_Exit;
private Button btnVioceTalk;
private Label label16;
private Label label17;
private TextBox textBoxID;
/*private Button PtzGet;
private Button PtzSet;*/
private Label label19;
/*private ComboBox comboBox1;
private TextBox textBoxPanPos;
private TextBox textBoxTiltPos;
private TextBox textBoxZoomPos;*/
private Label label20;
private Label label21;
private Label label22;
private Button PreSet;
private Label label23;
private Label labelLogin;
//private GroupBox groupBox1;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public Preview()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
m_bInitSDK = CHCNetSDK.NET_DVR_Init();
if (m_bInitSDK == false)
{
MessageBox.Show("NET_DVR_Init error!");
return;
}
else
{
//保存SDK日志 To save the SDK log
CHCNetSDK.NET_DVR_SetLogToFile(3, "C:\\SdkLog\\", true);
}
//
// 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 (m_lRealHandle >= 0)
{
CHCNetSDK.NET_DVR_StopRealPlay(m_lRealHandle);
}
if (m_lUserID >= 0)
{
CHCNetSDK.NET_DVR_Logout(m_lUserID);
}
if (m_bInitSDK == true)
{
CHCNetSDK.NET_DVR_Cleanup();
}
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.label4 = new System.Windows.Forms.Label();
this.btnLogin = new System.Windows.Forms.Button();
this.btnPreview = new System.Windows.Forms.Button();
this.RealPlayWnd = new System.Windows.Forms.PictureBox();
this.textBoxIP = new System.Windows.Forms.TextBox();
this.textBoxPort = new System.Windows.Forms.TextBox();
this.textBoxUserName = new System.Windows.Forms.TextBox();
this.textBoxPassword = new System.Windows.Forms.TextBox();
this.label5 = new System.Windows.Forms.Label();
this.label6 = new System.Windows.Forms.Label();
this.label7 = new System.Windows.Forms.Label();
this.label8 = new System.Windows.Forms.Label();
this.label9 = new System.Windows.Forms.Label();
this.label10 = new System.Windows.Forms.Label();
this.btnBMP = new System.Windows.Forms.Button();
this.btnJPEG = new System.Windows.Forms.Button();
this.label11 = new System.Windows.Forms.Label();
this.label12 = new System.Windows.Forms.Label();
this.label13 = new System.Windows.Forms.Label();
this.textBoxChannel = new System.Windows.Forms.TextBox();
this.btnRecord = new System.Windows.Forms.Button();
this.label14 = new System.Windows.Forms.Label();
this.btn_Exit = new System.Windows.Forms.Button();
this.btnVioceTalk = new System.Windows.Forms.Button();
this.label16 = new System.Windows.Forms.Label();
this.label17 = new System.Windows.Forms.Label();
this.textBoxID = new System.Windows.Forms.TextBox();
this.PreSet = new System.Windows.Forms.Button();
this.label23 = new System.Windows.Forms.Label();
this.labelLogin = new System.Windows.Forms.Label();
((System.ComponentModel.ISupportInitialize)(this.RealPlayWnd)).BeginInit();
this.SuspendLayout();
//
// label1
//
this.label1.Location = new System.Drawing.Point(12, 14);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(74, 18);
this.label1.TabIndex = 0;
this.label1.Text = "Device IP";
//
// label2
//
this.label2.Location = new System.Drawing.Point(12, 59);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(62, 16);
this.label2.TabIndex = 0;
this.label2.Text = "User Name";
//
// label3
//
this.label3.Location = new System.Drawing.Point(234, 58);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(63, 16);
this.label3.TabIndex = 0;
this.label3.Text = "Password";
//
// label4
//
this.label4.Location = new System.Drawing.Point(234, 14);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(79, 17);
this.label4.TabIndex = 0;
this.label4.Text = "Device Port";
//
// btnLogin
//
this.btnLogin.Location = new System.Drawing.Point(435, 38);
this.btnLogin.Name = "btnLogin";
this.btnLogin.Size = new System.Drawing.Size(78, 50);
this.btnLogin.TabIndex = 1;
this.btnLogin.Text = "Login";
this.btnLogin.Click = new System.EventHandler(this.btnLogin_Click);
//
// btnPreview
//
this.btnPreview.Location = new System.Drawing.Point(17, 571);
this.btnPreview.Name = "btnPreview";
this.btnPreview.Size = new System.Drawing.Size(76, 34);
this.btnPreview.TabIndex = 7;
this.btnPreview.Text = "Live View";
this.btnPreview.Click = new System.EventHandler(this.btnPreview_Click);
//
// RealPlayWnd
//
this.RealPlayWnd.BackColor = System.Drawing.SystemColors.WindowText;
this.RealPlayWnd.Location = new System.Drawing.Point(18, 131);
this.RealPlayWnd.Name = "RealPlayWnd";
this.RealPlayWnd.Size = new System.Drawing.Size(495, 378);
this.RealPlayWnd.TabIndex = 4;
this.RealPlayWnd.TabStop = false;
//
// textBoxIP
//
this.textBoxIP.Location = new System.Drawing.Point(78, 24);
this.textBoxIP.Name = "textBoxIP";
this.textBoxIP.Size = new System.Drawing.Size(114, 21);
this.textBoxIP.TabIndex = 2;
this.textBoxIP.Text = "10.18.37.120";
//
// textBoxPort
//
this.textBoxPort.Location = new System.Drawing.Point(308, 24);
this.textBoxPort.Name = "textBoxPort";
this.textBoxPort.Size = new System.Drawing.Size(112, 21);
this.textBoxPort.TabIndex = 3;
this.textBoxPort.Text = "8000";
//
// textBoxUserName
//
this.textBoxUserName.Location = new System.Drawing.Point(78, 70);
this.textBoxUserName.Name = "textBoxUserName";
this.textBoxUserName.Size = new System.Drawing.Size(114, 21);
this.textBoxUserName.TabIndex = 4;
this.textBoxUserName.Text = "admin";
//
// textBoxPassword
//
this.textBoxPassword.Cursor = System.Windows.Forms.Cursors.IBeam;
this.textBoxPassword.Location = new System.Drawing.Point(308, 70);
this.textBoxPassword.Name = "textBoxPassword";
this.textBoxPassword.PasswordChar = '*';
this.textBoxPassword.Size = new System.Drawing.Size(112, 21);
this.textBoxPassword.TabIndex = 5;
this.textBoxPassword.Text = "abcd1234";
//
// label5
//
this.label5.AutoSize = true;
this.label5.Location = new System.Drawing.Point(12, 33);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(41, 12);
this.label5.TabIndex = 9;
this.label5.Text = "设备IP";
//
// label6
//
this.label6.AutoSize = true;
this.label6.Location = new System.Drawing.Point(234, 33);
this.label6.Name = "label6";
this.label6.Size = new System.Drawing.Size(53, 12);
this.label6.TabIndex = 10;
this.label6.Text = "设备端口";
//
// label7
//
this.label7.AutoSize = true;
this.label7.Location = new System.Drawing.Point(14, 79);
this.label7.Name = "label7";
this.label7.Size = new System.Drawing.Size(41, 12);
this.label7.TabIndex = 11;
this.label7.Text = "用户名";
//
// label8
//
this.label8.AutoSize = true;
this.label8.Location = new System.Drawing.Point(236, 79);
this.label8.Name = "label8";
this.label8.Size = new System.Drawing.Size(29, 12);
this.label8.TabIndex = 12;
this.label8.Text = "密码";
//
// label9
//
this.label9.AutoSize = true;
this.label9.Location = new System.Drawing.Point(18, 550);
this.label9.Name = "label9";
this.label9.Size = new System.Drawing.Size(29, 12);
this.label9.TabIndex = 13;
this.label9.Text = "预览";
//
// label10
//
this.label10.AutoSize = true;
this.label10.Location = new System.Drawing.Point(442, 19);
this.label10.Name = "label10";
this.label10.Size = new System.Drawing.Size(29, 12);
this.label10.TabIndex = 14;
this.label10.Text = "登录";
//
// btnBMP
//
this.btnBMP.Location = new System.Drawing.Point(110, 572);
this.btnBMP.Name = "btnBMP";
this.btnBMP.Size = new System.Drawing.Size(79, 34);
this.btnBMP.TabIndex = 8;
this.btnBMP.Text = "Capture BMP ";
this.btnBMP.UseVisualStyleBackColor = true;
this.btnBMP.Click = new System.EventHandler(this.btnBMP_Click);
//
// btnJPEG
//
this.btnJPEG.Location = new System.Drawing.Point(208, 571);
this.btnJPEG.Name = "btnJPEG";
this.btnJPEG.Size = new System.Drawing.Size(97, 34);
this.btnJPEG.TabIndex = 9;
this.btnJPEG.Text = "Capture JPEG";
this.btnJPEG.UseVisualStyleBackColor = true;
this.btnJPEG.Click = new System.EventHandler(this.btnJPEG_Click);
//
// label11
//
this.label11.AutoSize = true;
this.label11.Location = new System.Drawing.Point(113, 550);
this.label11.Name = "label11";
this.label11.Size = new System.Drawing.Size(47, 12);
this.label11.TabIndex = 17;
this.label11.Text = "BMP抓图";
//
// label12
//
this.label12.AutoSize = true;
this.label12.Location = new System.Drawing.Point(214, 550);
this.label12.Name = "label12";
this.label12.Size = new System.Drawing.Size(53, 12);
this.label12.TabIndex = 18;
this.label12.Text = "JPEG抓图";
//
// label13
//
this.label13.AutoSize = true;
this.label13.Location = new System.Drawing.Point(17, 521);
this.label13.Name = "label13";
this.label13.Size = new System.Drawing.Size(83, 12);
this.label13.TabIndex = 19;
this.label13.Text = "预览/抓图通道";
//
// textBoxChannel
//
this.textBoxChannel.Location = new System.Drawing.Point(107, 517);
this.textBoxChannel.Name = "textBoxChannel";
this.textBoxChannel.Size = new System.Drawing.Size(100, 21);
this.textBoxChannel.TabIndex = 6;
this.textBoxChannel.Text = "1";
//
// btnRecord
//
this.btnRecord.Location = new System.Drawing.Point(319, 571);
this.btnRecord.Name = "btnRecord";
this.btnRecord.Size = new System.Drawing.Size(100, 34);
this.btnRecord.TabIndex = 10;
this.btnRecord.Text = "Start Record";
this.btnRecord.UseVisualStyleBackColor = true;
this.btnRecord.Click = new System.EventHandler(this.btnRecord_Click);
//
// label14
//
this.label14.AutoSize = true;
this.label14.Location = new System.Drawing.Point(320, 550);
this.label14.Name = "label14";
this.label14.Size = new System.Drawing.Size(65, 12);
this.label14.TabIndex = 22;
this.label14.Text = "客户端录像";
//
// btn_Exit
//
this.btn_Exit.Location = new System.Drawing.Point(438, 615);
this.btn_Exit.Name = "btn_Exit";
this.btn_Exit.Size = new System.Drawing.Size(75, 32);
this.btn_Exit.TabIndex = 11;
this.btn_Exit.Tag = "";
this.btn_Exit.Text = "退出 Exit";
this.btn_Exit.UseVisualStyleBackColor = true;
this.btn_Exit.Click = new System.EventHandler(this.btn_Exit_Click);
//
// btnVioceTalk
//
this.btnVioceTalk.Location = new System.Drawing.Point(18, 641);
this.btnVioceTalk.Name = "btnVioceTalk";
this.btnVioceTalk.Size = new System.Drawing.Size(75, 34);
this.btnVioceTalk.TabIndex = 25;
this.btnVioceTalk.Text = "Start Talk";
this.btnVioceTalk.UseVisualStyleBackColor = true;
this.btnVioceTalk.Click = new System.EventHandler(this.btnVioceTalk_Click);
//
// label16
//
this.label16.AutoSize = true;
this.label16.Location = new System.Drawing.Point(18, 621);
this.label16.Name = "label16";
this.label16.Size = new System.Drawing.Size(53, 12);
this.label16.TabIndex = 26;
this.label16.Text = "语音对讲";
//
// label17
//
this.label17.AutoSize = true;
this.label17.Location = new System.Drawing.Point(238, 520);
this.label17.Name = "label17";
this.label17.Size = new System.Drawing.Size(29, 12);
this.label17.TabIndex = 27;
this.label17.Text = "流ID";
//
// textBoxID
//
this.textBoxID.Location = new System.Drawing.Point(277, 516);
this.textBoxID.Name = "textBoxID";
this.textBoxID.Size = new System.Drawing.Size(225, 21);
this.textBoxID.TabIndex = 28;
//
// PreSet
//
this.PreSet.Location = new System.Drawing.Point(115, 641);
this.PreSet.Name = "PreSet";
this.PreSet.Size = new System.Drawing.Size(97, 33);
this.PreSet.TabIndex = 31;
this.PreSet.Text = "PTZ Control";
this.PreSet.UseVisualStyleBackColor = true;
this.PreSet.Click = new System.EventHandler(this.PreSet_Click);
//
// label23
//
this.label23.AutoSize = true;
this.label23.Location = new System.Drawing.Point(119, 621);
this.label23.Name = "label23";
this.label23.Size = new System.Drawing.Size(53, 12);
this.label23.TabIndex = 32;
this.label23.Text = "云台控制";
//
// labelLogin
//
this.labelLogin.AutoSize = true;
this.labelLogin.Location = new System.Drawing.Point(105, 103);
this.labelLogin.Name = "labelLogin";
this.labelLogin.Size = new System.Drawing.Size(113, 12);
this.labelLogin.TabIndex = 33;
this.labelLogin.Text = "登录状态（异步）：";
//
// Preview
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(531, 687);
this.Controls.Add(this.labelLogin);
this.Controls.Add(this.label23);
this.Controls.Add(this.PreSet);
this.Controls.Add(this.textBoxID);
this.Controls.Add(this.label17);
this.Controls.Add(this.label16);
this.Controls.Add(this.btnVioceTalk);
this.Controls.Add(this.btn_Exit);
this.Controls.Add(this.label14);
this.Controls.Add(this.btnRecord);
this.Controls.Add(this.textBoxChannel);
this.Controls.Add(this.label13);
this.Controls.Add(this.label12);
this.Controls.Add(this.label11);
this.Controls.Add(this.btnJPEG);
this.Controls.Add(this.btnBMP);
this.Controls.Add(this.label10);
this.Controls.Add(this.label9);
this.Controls.Add(this.label8);
this.Controls.Add(this.label7);
this.Controls.Add(this.label6);
this.Controls.Add(this.label5);
this.Controls.Add(this.textBoxPassword);
this.Controls.Add(this.textBoxUserName);
this.Controls.Add(this.textBoxPort);
this.Controls.Add(this.textBoxIP);
this.Controls.Add(this.RealPlayWnd);
this.Controls.Add(this.btnPreview);
this.Controls.Add(this.btnLogin);
this.Controls.Add(this.label1);
this.Controls.Add(this.label2);
this.Controls.Add(this.label3);
this.Controls.Add(this.label4);
this.Name = "Preview";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "Preview";
this.Load = new System.EventHandler(this.Preview_Load);
((System.ComponentModel.ISupportInitialize)(this.RealPlayWnd)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Preview());
}
private void textBox1_TextChanged(object sender, System.EventArgs e)
{
}
public void UpdateClientList(string strLogStatus, IntPtr lpDeviceInfo)
{
//列表新增报警信息
labelLogin.Text = "登录状态（异步）：" strLogStatus;
}
public void cbLoginCallBack(int lUserID, int dwResult, IntPtr lpDeviceInfo, IntPtr pUser)
{
string strLoginCallBack = "登录设备，lUserID：" lUserID "，dwResult：" dwResult;
if (dwResult==0)
{
uint iErrCode = CHCNetSDK.NET_DVR_GetLastError();
strLoginCallBack = strLoginCallBack "，错误号:" iErrCode;
}
//下面代码注释掉也会崩溃
if (InvokeRequired)
{
object[] paras = new object[2];
paras[0] = strLoginCallBack;
paras[1] = lpDeviceInfo;
labelLogin.BeginInvoke(new UpdateTextStatusCallback(UpdateClientList), paras);
}
else
{
//创建该控件的主线程直接更新信息列表
UpdateClientList(strLoginCallBack, lpDeviceInfo);
}
}
private void btnLogin_Click(object sender, System.EventArgs e)
{
if (textBoxIP.Text == "" || textBoxPort.Text == "" ||
textBoxUserName.Text == "" || textBoxPassword.Text == "")
{
MessageBox.Show("Please input IP, Port, User name and Password!");
return;
}
if (m_lUserID < 0)
{
struLogInfo = new CHCNetSDK.NET_DVR_USER_LOGIN_INFO();
//设备IP地址或者域名
byte[] byIP = System.Text.Encoding.Default.GetBytes(textBoxIP.Text);
struLogInfo.sDeviceAddress = new byte[129];
byIP.CopyTo(struLogInfo.sDeviceAddress, 0);
//设备用户名
byte[] byUserName = System.Text.Encoding.Default.GetBytes(textBoxUserName.Text);
struLogInfo.sUserName = new byte[64];
byUserName.CopyTo(struLogInfo.sUserName, 0);
//设备密码
byte[] byPassword = System.Text.Encoding.Default.GetBytes(textBoxPassword.Text);
struLogInfo.sPassword = new byte[64];
byPassword.CopyTo(struLogInfo.sPassword, 0);
struLogInfo.wPort = ushort.Parse(textBoxPort.Text);//设备服务端口号
if (LoginCallBack == null)
{
LoginCallBack = new CHCNetSDK.LOGINRESULTCALLBACK(cbLoginCallBack);//注册回调函数
}
struLogInfo.cbLoginResult = LoginCallBack;
struLogInfo.bUseAsynLogin = false; //是否异步登录：0- 否，1- 是
DeviceInfo = new CHCNetSDK.NET_DVR_DEVICEINFO_V40();
//登录设备 Login the device
m_lUserID = CHCNetSDK.NET_DVR_Login_V40(ref struLogInfo, ref DeviceInfo);
if (m_lUserID < 0)
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_Login_V40 failed, error code= " iLastErr; //登录失败，输出错误号
MessageBox.Show(str);
return;
}
else
{
//登录成功
MessageBox.Show("Login Success!");
btnLogin.Text = "Logout";
}
}
else
{
//注销登录 Logout the device
if (m_lRealHandle >= 0)
{
MessageBox.Show("Please stop live view firstly");
return;
}
if (!CHCNetSDK.NET_DVR_Logout(m_lUserID))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_Logout failed, error code= " iLastErr;
MessageBox.Show(str);
return;
}
m_lUserID = -1;
btnLogin.Text = "Login";
}
return;
}
private void btnPreview_Click(object sender, System.EventArgs e)
{
if(m_lUserID < 0)
{
MessageBox.Show("Please login the device firstly");
return;
}
if (m_lRealHandle < 0)
{
CHCNetSDK.NET_DVR_PREVIEWINFO lpPreviewInfo = new CHCNetSDK.NET_DVR_PREVIEWINFO();
lpPreviewInfo.hPlayWnd = RealPlayWnd.Handle;//预览窗口
lpPreviewInfo.lChannel = Int16.Parse(textBoxChannel.Text);//预te览的设备通道
lpPreviewInfo.dwStreamType = 0;//码流类型：0-主码流，1-子码流，2-码流3，3-码流4，以此类推
lpPreviewInfo.dwLinkMode = 0;//连接方式：0- TCP方式，1- UDP方式，2- 多播方式，3- RTP方式，4-RTP/RTSP，5-RSTP/HTTP
lpPreviewInfo.bBlocked = true; //0- 非阻塞取流，1- 阻塞取流
lpPreviewInfo.dwDisplayBufNum = 1; //播放库播放缓冲区最大缓冲帧数
lpPreviewInfo.byProtoType = 0;
lpPreviewInfo.byPreviewMode = 0;
if (textBoxID.Text != "")
{
lpPreviewInfo.lChannel = -1;
byte[] byStreamID = System.Text.Encoding.Default.GetBytes(textBoxID.Text);
lpPreviewInfo.byStreamID = new byte[32];
byStreamID.CopyTo(lpPreviewInfo.byStreamID, 0);
}
if (RealData == null)
{
RealData = new CHCNetSDK.REALDATACALLBACK(RealDataCallBack);//预览实时流回调函数
}
IntPtr pUser = new IntPtr();//用户数据
//打开预览 Start live view
m_lRealHandle = CHCNetSDK.NET_DVR_RealPlay_V40(m_lUserID, ref lpPreviewInfo, null/*RealData*/, pUser);
if (m_lRealHandle < 0)
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_RealPlay_V40 failed, error code= " iLastErr; //预览失败，输出错误号
MessageBox.Show(str);
return;
}
else
{
//预览成功
btnPreview.Text = "Stop Live View";
}
}
else
{
//停止预览 Stop live view
if (!CHCNetSDK.NET_DVR_StopRealPlay(m_lRealHandle))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_StopRealPlay failed, error code= " iLastErr;
MessageBox.Show(str);
return;
}
m_lRealHandle = -1;
btnPreview.Text = "Live View";
}
return;
}
public void RealDataCallBack(Int32 lRealHandle, UInt32 dwDataType, IntPtr pBuffer, UInt32 dwBufSize, IntPtr pUser)
{
if (dwBufSize > 0)
{
byte[] sData = new byte[dwBufSize];
Marshal.Copy(pBuffer, sData, 0, (Int32)dwBufSize);
string str = "实时流数据.ps";
FileStream fs = new FileStream(str, FileMode.Create);
int iLen = (int)dwBufSize;
fs.Write(sData, 0, iLen);
fs.Close();
}
}
private void btnBMP_Click(object sender, EventArgs e)
{
string sBmpPicFileName;
//图片保存路径和文件名 the path and file name to save
sBmpPicFileName = "BMP_test.bmp";
//BMP抓图 Capture a BMP picture
if (!CHCNetSDK.NET_DVR_CapturePicture(m_lRealHandle, sBmpPicFileName))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_CapturePicture failed, error code= " iLastErr;
MessageBox.Show(str);
return;
}
else
{
str = "Successful to capture the BMP file and the saved file is " sBmpPicFileName;
MessageBox.Show(str);
}
return;
}
private void btnJPEG_Click(object sender, EventArgs e)
{
string sJpegPicFileName;
//图片保存路径和文件名 the path and file name to save
sJpegPicFileName = "JPEG_test.jpg";
int lChannel = Int16.Parse(textBoxChannel.Text); //通道号 Channel number
CHCNetSDK.NET_DVR_JPEGPARA lpJpegPara = new CHCNetSDK.NET_DVR_JPEGPARA();
lpJpegPara.wPicQuality = 0; //图像质量 Image quality
lpJpegPara.wPicSize = 0xff; //抓图分辨率 Picture size: 2- 4CIF，0xff- Auto(使用当前码流分辨率)，抓图分辨率需要设备支持，更多取值请参考SDK文档
//JPEG抓图 Capture a JPEG picture
if (!CHCNetSDK.NET_DVR_CaptureJPEGPicture(m_lUserID, lChannel, ref lpJpegPara, sJpegPicFileName))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_CaptureJPEGPicture failed, error code= " iLastErr;
MessageBox.Show(str);
return;
}
else
{
str = "Successful to capture the JPEG file and the saved file is " sJpegPicFileName;
MessageBox.Show(str);
}
return;
}
private void btnRecord_Click(object sender, EventArgs e)
{
//录像保存路径和文件名 the path and file name to save
string sVideoFileName;
sVideoFileName = "Record_test.mp4";
if (m_bRecord == false)
{
//强制I帧 Make a I frame
int lChannel = Int16.Parse(textBoxChannel.Text); //通道号 Channel number
CHCNetSDK.NET_DVR_MakeKeyFrame(m_lUserID, lChannel);
//开始录像 Start recording
if (!CHCNetSDK.NET_DVR_SaveRealData(m_lRealHandle, sVideoFileName))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_SaveRealData failed, error code= " iLastErr;
MessageBox.Show(str);
return;
}
else
{
btnRecord.Text = "Stop Record";
m_bRecord = true;
}
}
else
{
//停止录像 Stop recording
if (!CHCNetSDK.NET_DVR_StopSaveRealData(m_lRealHandle))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_StopSaveRealData failed, error code= " iLastErr;
MessageBox.Show(str);
return;
}
else
{
str = "Successful to stop recording and the saved file is " sVideoFileName;
MessageBox.Show(str);
btnRecord.Text = "Start Record";
m_bRecord = false;
}
}
return;
}
private void btn_Exit_Click(object sender, EventArgs e)
{
//停止预览 Stop live view
if (m_lRealHandle >= 0)
{
CHCNetSDK.NET_DVR_StopRealPlay(m_lRealHandle);
m_lRealHandle = -1;
}
//注销登录 Logout the device
if (m_lUserID >= 0)
{
CHCNetSDK.NET_DVR_Logout(m_lUserID);
m_lUserID = -1;
}
CHCNetSDK.NET_DVR_Cleanup();
Application.Exit();
}
private void btnPTZ_Click(object sender, EventArgs e)
{
}
public void VoiceDataCallBack(int lVoiceComHandle, IntPtr pRecvDataBuffer, uint dwBufSize, byte byAudioFlag, System.IntPtr pUser)
{
byte[] sString = new byte[dwBufSize];
Marshal.Copy(pRecvDataBuffer, sString, 0, (Int32)dwBufSize);
if (byAudioFlag ==0)
{
//将缓冲区里的音频数据写入文件 save the data into a file
string str = "PC采集音频文件.pcm";
FileStream fs = new FileStream(str, FileMode.Create);
int iLen = (int)dwBufSize;
fs.Write(sString, 0, iLen);
fs.Close();
}
if (byAudioFlag == 1)
{
//将缓冲区里的音频数据写入文件 save the data into a file
string str = "设备音频文件.pcm";
FileStream fs = new FileStream(str, FileMode.Create);
int iLen = (int)dwBufSize;
fs.Write(sString, 0, iLen);
fs.Close();
}
}
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