private void axHV_OnReceiveVideo(object sender, EventArgs e)
{
string strName = "";
int iSize = 1024 * 1024;
IntPtr irMapFile = IntPtr.Zero;
IntPtr itData = IntPtr.Zero;
try
{
AxHVActiveX2Lib.AxHVActiveX2 axHV = sender as AxHVActiveX2Lib.AxHVActiveX2;
DeviceState info = axHV.Tag as DeviceState;
info.State = 0;
if (_ActiveDevice != null && _ActiveDevice.IP == (axHV.Tag as DeviceState).IP)
{
strName = axHV.GetVideoFrameSM(_ActiveDevice.VideoID, ref iSize);
irMapFile = OpenFileMapping(FILE_MAP_READ, false, strName);
if (irMapFile == IntPtr.Zero)
{
return;
}
itData = MapViewOfFile(irMapFile, FILE_MAP_READ, 0, 0, 0);
if (itData == IntPtr.Zero)
{
CloseHandle(irMapFile);
return;
}
byte[] bData = new byte[iSize];
Marshal.Copy(itData, bData, 0, iSize);
MemoryStream stream = new MemoryStream(bData);
video.Image = Image.FromStream(stream);
}
}
catch (Exception ex)
{
Ralid.GeneralLibrary.ExceptionHandling.ExceptionPolicy.HandleException(ex);
}
finally
{
///完成一次接收后调用下面两个函数关闭共享内存(也就是不用内存映射的时候要关闭)
UnmapViewOfFile(itData);
CloseHandle(irMapFile);
}
}
private void axHV_OnReceivePlate(object sender, EventArgs e)
{
try
{
AxHVActiveX2Lib.AxHVActiveX2 axHV = sender as AxHVActiveX2Lib.AxHVActiveX2;
int videoID = axHV.GetVideoID();
DeviceState info = axHV.Tag as DeviceState;
info.State = 0;
foreach (CarPlateDevice device in _Devices)
{
if (device.IP == info.IP && device.VideoID == videoID)
{
device.ResetResult();
device.CarPlate = axHV.GetPlate();
device.EventDateTime = DateTime.Now;
device.PlateColor = axHV.GetPlateColor();
string dir = TempFolderManager.GetCurrentFolder();
string path;
path = Path.Combine(dir, Guid.NewGuid().ToString() + ".jpg");
if (axHV.SaveSnapImage(path) == 0)
{
device.SnapPath = path;
}
else
{
device.SnapPath = string.Empty;
}
path = Path.Combine(dir, Guid.NewGuid().ToString() + ".jpg");
if (axHV.SavePlateImage(path) == 0)
{
device.PlatePath = path;
}
else
{
device.PlatePath = string.Empty;
}
Action action = delegate()
{
foreach (DataGridViewRow row in dataGridView1.Rows)
{
CarPlateDevice d = row.Tag as CarPlateDevice;
if (d.IP == device.IP && d.VideoID == device.VideoID)
{
ShowItemOnRow(device, row);
}
}
if (_ActiveDevice != null && _ActiveDevice.IP == (axHV.Tag as DeviceState).IP && videoID == _ActiveDevice.VideoID)
{
this.picPlate.Image = Properties.Resources.NoImage;
if (!string.IsNullOrEmpty(device.PlatePath))
{
this.picPlate.Image = Image.FromFile(device.PlatePath);
}
}
};
if (this.InvokeRequired)
{
this.Invoke(action);
}
else
{
action();
}
}
}
}
catch (Exception ex)
{
Ralid.GeneralLibrary.ExceptionHandling.ExceptionPolicy.HandleException(ex);
}
}
