private static void UpdateChannel(ref CameraChannel channel, Byte byEnable, Int32 byIPID)
{
if (byIPID == 0)
{
channel.ChannelState = (Int32)CameraChannelState.IDLE;
channel.IsEnabled = false;
}
else
{
if (byEnable == 0)
{
channel.ChannelState = (Int32)CameraChannelState.Offline;
channel.IsEnabled = false;
}
else
{
channel.ChannelState = (Int32)CameraChannelState.Online;
channel.IsEnabled = true;
}
}
}
public OResult <IEnumerable <CameraChannel> > GetChannels()
{
UInt32 dwReturn = 0;
var iGroupNo = 0; //0表示仅获取第一组64个通道，如果设备IP通道大于64路，需要按组号0~i多次调用NET_DVR_GET_IPPARACFG_V40获取
var iIPDevID = new Int32[96];
var dwAChanTotalNum = (UInt32)_deviceInfo.struDeviceV30.byChanNum;
var dwDChanTotalNum = (UInt32)(_deviceInfo.struDeviceV30.byIPChanNum + 256 * _deviceInfo.struDeviceV30.byHighDChanNum);
IntPtr ptrIpParaCfgV40 = IntPtr.Zero;
var channels = new List <CameraChannel>(16);
try
{
if (dwDChanTotalNum > 0)
{
var m_struIpParaCfgV40 = new CHCNetSDK.NET_DVR_IPPARACFG_V40();
var dwSize = (UInt32)Marshal.SizeOf(m_struIpParaCfgV40);
ptrIpParaCfgV40 = Marshal.AllocHGlobal((Int32)dwSize);
Marshal.StructureToPtr(m_struIpParaCfgV40, ptrIpParaCfgV40, false);
if (CHCNetSDK.NET_DVR_GetDVRConfig(_userId, CHCNetSDK.NET_DVR_GET_IPPARACFG_V40, iGroupNo, ptrIpParaCfgV40, dwSize, ref dwReturn))
{
m_struIpParaCfgV40 = (CHCNetSDK.NET_DVR_IPPARACFG_V40)Marshal.PtrToStructure(ptrIpParaCfgV40, typeof(CHCNetSDK.NET_DVR_IPPARACFG_V40));
if (dwAChanTotalNum > 0)
{
for (var i = 0; i < dwAChanTotalNum; i++)
{
channels.Add(new CameraChannel()
{
ChannelNo = _deviceInfo.struDeviceV30.byStartChan + i,
ChannelType = (Int32)CameraChannelType.AC,
IsEnabled = m_struIpParaCfgV40.byAnalogChanEnable[i] != 0
});
}
}
UInt32 iDChanNum = 64;
if (dwDChanTotalNum < 64)
{
iDChanNum = dwDChanTotalNum; //如果设备IP通道小于64路，按实际路数获取
}
CHCNetSDK.NET_DVR_IPCHANINFO m_struChanInfo;
CHCNetSDK.NET_DVR_PU_STREAM_URL m_struStreamURL;
CHCNetSDK.NET_DVR_IPCHANINFO_V40 m_struChanInfoV40;
if (iDChanNum > 0)
{
for (var i = 0; i < iDChanNum; i++)
{
var byStreamType = m_struIpParaCfgV40.struStreamMode[i].byGetStreamType;
dwSize = (UInt32)Marshal.SizeOf(m_struIpParaCfgV40.struStreamMode[i].uGetStream);
var dcChannel = new CameraChannel()
{
ChannelNo = (Int32)m_struIpParaCfgV40.dwStartDChan + i,
ChannelType = (Int32)CameraChannelType.DC
};
switch (byStreamType)
{
//目前NVR仅支持直接从设备取流
case 0:
IntPtr ptrChanInfo = Marshal.AllocHGlobal((Int32)dwSize);
Marshal.StructureToPtr(m_struIpParaCfgV40.struStreamMode[i].uGetStream, ptrChanInfo, false);
m_struChanInfo = (CHCNetSDK.NET_DVR_IPCHANINFO)Marshal.PtrToStructure(ptrChanInfo, typeof(CHCNetSDK.NET_DVR_IPCHANINFO));
UpdateChannel(ref dcChannel, m_struChanInfo.byEnable, m_struChanInfo.byIPID);
iIPDevID[i] = m_struChanInfo.byIPID + m_struChanInfo.byIPIDHigh * 256 - iGroupNo * 64 - 1;
Marshal.FreeHGlobal(ptrChanInfo);
break;
case 4:
IntPtr ptrStreamURL = Marshal.AllocHGlobal((Int32)dwSize);
Marshal.StructureToPtr(m_struIpParaCfgV40.struStreamMode[i].uGetStream, ptrStreamURL, false);
m_struStreamURL = (CHCNetSDK.NET_DVR_PU_STREAM_URL)Marshal.PtrToStructure(ptrStreamURL, typeof(CHCNetSDK.NET_DVR_PU_STREAM_URL));
UpdateChannel(ref dcChannel, m_struStreamURL.byEnable, m_struStreamURL.wIPID);
iIPDevID[i] = m_struStreamURL.wIPID - iGroupNo * 64 - 1;
Marshal.FreeHGlobal(ptrStreamURL);
break;
case 6:
IntPtr ptrChanInfoV40 = Marshal.AllocHGlobal((Int32)dwSize);
Marshal.StructureToPtr(m_struIpParaCfgV40.struStreamMode[i].uGetStream, ptrChanInfoV40, false);
m_struChanInfoV40 = (CHCNetSDK.NET_DVR_IPCHANINFO_V40)Marshal.PtrToStructure(ptrChanInfoV40, typeof(CHCNetSDK.NET_DVR_IPCHANINFO_V40));
UpdateChannel(ref dcChannel, m_struChanInfoV40.byEnable, m_struChanInfoV40.wIPID);
iIPDevID[i] = m_struChanInfoV40.wIPID - iGroupNo * 64 - 1;
Marshal.FreeHGlobal(ptrChanInfoV40);
break;
default:
break;
}
channels.Add(dcChannel);
}
}
}
}
else
{
for (var i = 0; i < dwAChanTotalNum; i++)
{
channels.Add(new CameraChannel()
{
ChannelNo = _deviceInfo.struDeviceV30.byStartChan + i,
ChannelType = (Int32)CameraChannelType.AC,
IsEnabled = true
});
}
}
return(new OResult <IEnumerable <CameraChannel> >(channels));
}
finally
{
Marshal.FreeHGlobal(ptrIpParaCfgV40);
}
}