private void btnPreview_Click(object sender, EventArgs e)
{
if (m_lUserID < 0)
{
MessageBox.Show("Please login the device firstly!");
return;
}
if (m_lRealHandle < 0)
{
m_lRealHandle = this.preview.startPreview(m_lUserID, iChannelNum[0]);
if (m_lRealHandle < 0)
{
string str;
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_RealPlay_V40 failed, error code= " + iLastErr; //预览失败，输出错误号 failed to start live view, and output the error code.
DebugInfo(str);
}
else
{
//预览成功
DebugInfo("NET_DVR_RealPlay_V40 succ!");
btnPreview.Text = "停止预览";
}
}
else
{
if (this.preview.stopPreview(m_lRealHandle))
{
DebugInfo("NET_DVR_StopRealPlay succ!");
m_lRealHandle = -1;
btnPreview.Text = "开始预览";
RealPlayWnd.Invalidate();//刷新窗口 refresh the window
}
else
{
string str;
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_StopRealPlay failed, error code= " + iLastErr;
DebugInfo(str);
}
}
}
private void btnPreview_Click(object sender, EventArgs e)
{
if (m_lUserID < 0)
{
MessageBox.Show("Please login the device firstly!");
return;
}
if (m_bRecord)
{
MessageBox.Show("Please stop recording firstly!");
return;
}
if (m_lRealHandle < 0)
{
CHCNetSDK.NET_DVR_PREVIEWINFO lpPreviewInfo = new CHCNetSDK.NET_DVR_PREVIEWINFO();
lpPreviewInfo.hPlayWnd = RealPlayWnd.Handle; //预览窗口 live view window
lpPreviewInfo.lChannel = iChannelNum[(int)iSelIndex]; //预览的设备通道 the device channel number
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 = 15; //播放库显示缓冲区最大帧数
IntPtr pUser = IntPtr.Zero; //用户数据 user data
if (comboBoxView.SelectedIndex == 0)
{
//打开预览 Start live view
m_lRealHandle = CHCNetSDK.NET_DVR_RealPlay_V40(m_lUserID, ref lpPreviewInfo, null /*RealData*/, pUser);
}
else
{
lpPreviewInfo.hPlayWnd = IntPtr.Zero; //预览窗口 live view window
m_ptrRealHandle = RealPlayWnd.Handle;
RealData = new CHCNetSDK.REALDATACALLBACK(RealDataCallBack); //预览实时流回调函数 real-time stream callback function
m_lRealHandle = CHCNetSDK.NET_DVR_RealPlay_V40(m_lUserID, ref lpPreviewInfo, 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 failed to start live view, and output the error code.
DebugInfo(str);
return;
}
else
{
//预览成功
DebugInfo("NET_DVR_RealPlay_V40 succ!");
btnPreview.Text = "Stop 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;
DebugInfo(str);
return;
}
if ((comboBoxView.SelectedIndex == 1) && (m_lPort >= 0))
{
if (!PlayCtrl.PlayM4_Stop(m_lPort))
{
iLastErr = PlayCtrl.PlayM4_GetLastError(m_lPort);
str = "PlayM4_Stop failed, error code= " + iLastErr;
DebugInfo(str);
}
if (!PlayCtrl.PlayM4_CloseStream(m_lPort))
{
iLastErr = PlayCtrl.PlayM4_GetLastError(m_lPort);
str = "PlayM4_CloseStream failed, error code= " + iLastErr;
DebugInfo(str);
}
if (!PlayCtrl.PlayM4_FreePort(m_lPort))
{
iLastErr = PlayCtrl.PlayM4_GetLastError(m_lPort);
str = "PlayM4_FreePort failed, error code= " + iLastErr;
DebugInfo(str);
}
m_lPort = -1;
}
DebugInfo("NET_DVR_StopRealPlay succ!");
m_lRealHandle = -1;
btnPreview.Text = "Live View";
RealPlayWnd.Invalidate();//刷新窗口 refresh the window
}
return;
}
private void btnPreview_Click(object sender, EventArgs e)
{
if (_mLUserId < 0)
{
MessageBox.Show(@"Please login the device firstly!");
return;
}
if (_mBRecord)
{
MessageBox.Show(@"Please stop recording firstly!");
return;
}
if (_mLRealHandle < 0)
{
var lpPreviewInfo = new ChcNetSdk.NetDvrPreviewinfo
{
hPlayWnd = RealPlayWnd.Handle,
lChannel = _iChannelNum[(int)_iSelIndex],
dwStreamType = 0,
dwLinkMode = 0,
bBlocked = true
};
//预览窗口 live view window
//预览的设备通道 the device channel number
//码流类型：0-主码流，1-子码流，2-码流3，3-码流4，以此类推
//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
//0- 非阻塞取流，1- 阻塞取流
var pUser = IntPtr.Zero;//用户数据 user data
if (comboBoxView.SelectedIndex == 0)
{
//打开预览 Start live view
_mLRealHandle = ChcNetSdk.NET_DVR_RealPlay_V40(_mLUserId, ref lpPreviewInfo, null /*RealData*/, pUser);
}
else
{
lpPreviewInfo.hPlayWnd = IntPtr.Zero; //预览窗口 live view window
_mPtrRealHandle = RealPlayWnd.Handle;
_realData = RealDataCallBack; //预览实时流回调函数 real-time stream callback function
_mLRealHandle = ChcNetSdk.NET_DVR_RealPlay_V40(_mLUserId, ref lpPreviewInfo, _realData, pUser);
}
if (_mLRealHandle < 0)
{
_iLastErr = ChcNetSdk.NET_DVR_GetLastError();
_str = "NET_DVR_RealPlay_V40 failed, error code= " + _iLastErr; //预览失败，输出错误号 failed to start live view, and output the error code.
DebugInfo(_str);
}
else
{
//预览成功
DebugInfo("NET_DVR_RealPlay_V40 succ!");
btnPreview.Text = @"Stop View";
}
}
else
{
//停止预览 Stop live view
if (!ChcNetSdk.NET_DVR_StopRealPlay(_mLRealHandle))
{
_iLastErr = ChcNetSdk.NET_DVR_GetLastError();
_str = "NET_DVR_StopRealPlay failed, error code= " + _iLastErr;
DebugInfo(_str);
return;
}
if ((comboBoxView.SelectedIndex == 1) && (_mLPort >= 0))
{
if (!PlayCtrl.PlayM4_Stop(_mLPort))
{
_iLastErr = PlayCtrl.PlayM4_GetLastError(_mLPort);
_str = "PlayM4_Stop failed, error code= " + _iLastErr;
DebugInfo(_str);
}
if (!PlayCtrl.PlayM4_CloseStream(_mLPort))
{
_iLastErr = PlayCtrl.PlayM4_GetLastError(_mLPort);
_str = "PlayM4_CloseStream failed, error code= " + _iLastErr;
DebugInfo(_str);
}
if (!PlayCtrl.PlayM4_FreePort(_mLPort))
{
_iLastErr = PlayCtrl.PlayM4_GetLastError(_mLPort);
_str = "PlayM4_FreePort failed, error code= " + _iLastErr;
DebugInfo(_str);
}
_mLPort = -1;
}
DebugInfo("NET_DVR_StopRealPlay succ!");
_mLRealHandle = -1;
btnPreview.Text = @"Live View";
RealPlayWnd.Invalidate();//刷新窗口 refresh the window
}
}
private void btnPreview_Click(object sender, EventArgs e)
{
if (m_lUserID < 0)
{
MessageBox.Show("Please login the device firstly!");
return;
}
if (m_bRecord)
{
MessageBox.Show("Please stop recording firstly!");
return;
}
if (m_lRealHandle < 0)
{
CHCNetSDK.NET_DVR_PREVIEWINFO lpPreviewInfo = new CHCNetSDK.NET_DVR_PREVIEWINFO();
lpPreviewInfo.hPlayWnd = RealPlayWnd.Handle;
lpPreviewInfo.lChannel = iChannelNum[(int)iSelIndex];
lpPreviewInfo.dwStreamType = 0;
lpPreviewInfo.dwLinkMode = 0;
lpPreviewInfo.bBlocked = true;
lpPreviewInfo.dwDisplayBufNum = 15;
IntPtr pUser = IntPtr.Zero;
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;
DebugInfo(str);
return;
}
else
{
DebugInfo("NET_DVR_RealPlay_V40 succ!");
btnPreview.Text = "Stop View";
}
}
else
{
if (!CHCNetSDK.NET_DVR_StopRealPlay(m_lRealHandle))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_StopRealPlay failed, error code= " + iLastErr;
DebugInfo(str);
return;
}
DebugInfo("NET_DVR_StopRealPlay succ!");
m_lRealHandle = -1;
btnPreview.Text = "Live View";
RealPlayWnd.Invalidate();
}
return;
}
