private void Extract([In] IntPtr rawimage, int width, int height, int res, ref FingerprintTemplate fingerTemplate, int context)
{
IntPtr zero = IntPtr.Zero;
try
{
int cb = 0x2710 * Marshal.SizeOf(typeof(byte));
zero = Marshal.AllocHGlobal(cb);
int quality = FingerprintException.CheckError(GrFingerprintProxy.GrExtract(rawimage, width, height, res, zero, ref cb, context));
zero = Marshal.ReAllocHGlobal(zero, (IntPtr)cb);
fingerTemplate = new FingerprintTemplate(zero, cb, quality);
}
catch (OutOfMemoryException exception)
{
throw new FingerprintException(-7, exception);
}
catch (AccessViolationException exception2)
{
throw new FingerprintException(-113, exception2);
}
finally
{
Marshal.FreeHGlobal(zero);
}
}
