/// <summary>
/// 对通道进行图片抓拍,要求此通道有一个用于车牌识别的摄像机
/// </summary>
/// <param name="parkID"></param>
/// <param name="entranceID"></param>
/// <returns>抓拍图片的地址，返回空时表示抓拍失败</returns>
public string SnapShot(int parkID, int entranceID)
{
try
{
CarPlateDevice device = _Devices.SingleOrDefault(item => item.EntranceID == entranceID);
if (device != null)
{
AxHVActiveX2Lib.AxHVActiveX2 axHV = _HVS.SingleOrDefault(item => (item.Tag as DeviceState).IP == device.IP);
if (axHV != null)
{
device.ResetResult();
axHV.ForceSendEx(device.VideoID);
int wait = 0;
//最多等待1秒来等待抓拍图片
while (wait < 1000)
{
Thread.Sleep(100);
if (!string.IsNullOrEmpty(device.SnapPath))
{
return(device.SnapPath);
}
wait += 100;
}
}
}
}
catch (Exception ex)
{
Ralid.GeneralLibrary.ExceptionHandling.ExceptionPolicy.HandleException(ex);
}
return(string.Empty);
}
/// <summary>
/// 抓拍图片
/// </summary>
/// <param name="device">要抓拍的摄像机</param>
/// <param name="force">是否强制重新抓拍，不管之前有没有抓拍到图片</param>
/// <returns></returns>
private bool SnapShotTo(CarPlateDevice device, bool force)
{
if (device != null)
{
if (!force && !string.IsNullOrEmpty(device.SnapPath))
{
//如果不强制重新抓拍，之前已经有抓拍图片了，就不再需要抓拍图片了
return(true);
}
AxHVActiveX2Lib.AxHVActiveX2 axHV = _HVS.SingleOrDefault(item => (item.Tag as DeviceState).IP == device.IP);
if (axHV != null)
{
device.ResetResult();
axHV.ForceSendEx(device.VideoID);
int wait = 0;
//最多等待1秒来等待抓拍图片
while (wait < 1000)
{
Thread.Sleep(100);
if (!string.IsNullOrEmpty(device.SnapPath))
{
return(true);
}
wait += 100;
}
}
}
return(false);
}
private void btnForceSnap_Click(object sender, EventArgs e)
{
if (this.dataGridView1.SelectedRows != null && this.dataGridView1.SelectedRows.Count == 1)
{
CarPlateDevice device = this.dataGridView1.SelectedRows[0].Tag as CarPlateDevice;
AxHVActiveX2Lib.AxHVActiveX2 axHV = _HVS.SingleOrDefault(item => (item.Tag as DeviceState).IP == device.IP);
if (axHV != null)
{
device.ResetResult();
axHV.ForceSendEx(device.VideoID);
}
}
}
/// <summary>
/// 触发手动抓拍
/// </summary>
/// <param name="device"></param>
private void ManualSnap(CarPlateDevice device)
{
device.ResetResult();
//触发手动抓拍测试
MANUAL_SNAP_PARAMETER snap = new MANUAL_SNAP_PARAMETER();
snap.nChannel = device.VideoID;
IntPtr ptr = Marshal.AllocHGlobal(Marshal.SizeOf(snap));
Marshal.StructureToPtr(snap, ptr, false);
bool bRet = DHClient.DHControlDevice(device.m_nLoginID, CtrlType.DH_MANUAL_SNAP, ptr, 1000);
System.Runtime.InteropServices.Marshal.FreeHGlobal(ptr);
}
/// <summary>
/// 清除抓拍图片信息
/// </summary>
/// <param name="info">摄像机</param>
public void ClearCapture(VideoSourceInfo info)
{
try
{
CarPlateDevice device = _Devices.FirstOrDefault(item => item.IP == info.MediaSource);
if (device != null)
{
lock (device)
{
device.ResetResult();
}
}
}
catch (Exception ex)
{
Ralid.GeneralLibrary.ExceptionHandling.ExceptionPolicy.HandleException(ex);
}
}
/// <summary>
/// 识别某个通道的车牌号
/// </summary>
/// <param name="parkID"></param>
/// <param name="entranceID"></param>
/// <returns></returns>
public PlateRecognitionResult Recognize(int parkID, int entranceID)
{
string dir = TempFolderManager.GetCurrentFolder();
PlateRecognitionResult ret = new PlateRecognitionResult();
try
{
CarPlateDevice device = _Devices.SingleOrDefault(item => item.EntranceID == entranceID);
if (device != null && device.EventDateTime != null)
{
ret.CarPlate = device.CarPlate;
ret.Color = device.PlateColor;
device.ResetResult();
}
}
catch (Exception ex)
{
Ralid.GeneralLibrary.ExceptionHandling.ExceptionPolicy.HandleException(ex);
}
return(ret);
}
/// <summary>
/// 开始智能交通设备实时上传--回调
/// </summary>
/// <param name="lAnalyzerHandle"></param>
/// <param name="dwAlarmType"></param>
/// <param name="pAlarmInfo"></param>
/// <param name="pBuffer"></param>
/// <param name="dwBufSize"></param>
/// <param name="dwUser"></param>
/// <param name="nSequence"></param>
/// <param name="reserved"></param>
/// <returns></returns>
private int AnalyzerDataCallBackEvent(Int32 lAnalyzerHandle, UInt32 dwAlarmType, IntPtr pAlarmInfo, IntPtr pBuffer, UInt32 dwBufSize, UInt32 dwUser, Int32 nSequence, IntPtr reserved)
{
if (dwBufSize == 0)
{
return(1);
}
try
{
CarPlateDevice device = _Devices.SingleOrDefault(d => d.m_nRealLoadPic == lAnalyzerHandle);
if (device != null)
{
// 记录文件
byte[] buf = new byte[dwBufSize];
Marshal.Copy(pBuffer, buf, 0, (int)dwBufSize);
DH_MSG_OBJECT plateObj = new DH_MSG_OBJECT();
DH_MSG_OBJECT VehicleObj = new DH_MSG_OBJECT();
NET_TIME_EX utc = new NET_TIME_EX();
int lane = 0;
string strMsg;
bool bret = DaHuaSDKManager.GetInstance().GetStuObject(dwAlarmType, pAlarmInfo, out plateObj, out VehicleObj, out utc, out lane, out strMsg);
device.ResetResult();
if (plateObj.szText != null)
{
device.CarPlate = Encoding.GetEncoding("gb2312").GetString(plateObj.szText);
}
if (!string.IsNullOrEmpty(device.CarPlate))
{
device.CarPlate = device.CarPlate.TrimEnd('\0'); //去除结束符\0
}
device.EventDateTime = DateTime.Now;
if (plateObj.bColor == 1)
{
device.PlateColor = DaHuaSDKManager.GetInstance().GetColorString(plateObj.rgbaMainColor);
}
if (VehicleObj.bColor == 1)
{
device.CarColor = DaHuaSDKManager.GetInstance().GetColorString(VehicleObj.rgbaMainColor);
}
device.Lane = lane;
try
{
device.DeviceSnapTime = new DateTime((int)utc.dwYear, (int)utc.dwMonth, (int)utc.dwDay, (int)utc.dwHour, (int)utc.dwMinute, (int)utc.dwSecond, (int)utc.dwMillisecond);
}
catch { }
device.SnapPath = DaHuaSDKManager.GetInstance().SaveSnapImage(buf);
device.PlatePath = DaHuaSDKManager.GetInstance().SavePlateJpg(plateObj, pBuffer, buf);
foreach (DataGridViewRow row in dataGridView1.Rows)
{
CarPlateDevice d = row.Tag as CarPlateDevice;
if (d != null)
{
if (d.m_nRealLoadPic == device.m_nRealLoadPic)
{
ShowItemOnRow(device, row);
}
}
}
if (_ActiveDevice != null && _ActiveDevice.m_nRealLoadPic == device.m_nRealLoadPic)
{
ShowCarPlateInfo(device);
}
}
}
catch (Exception ex)
{
Ralid.GeneralLibrary.ExceptionHandling.ExceptionPolicy.HandleException(ex);
}
return(1);
}
