CalibrationPlate.cs

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using System.Runtime.InteropServices;
using IDSImaging.Peak.ICV.Backend;
using Microsoft.Win32.SafeHandles;
 
namespace IDSImaging.Peak.ICV.Algorithms.Calibration;
 
public class CalibrationPlate : IDisposable, IHasSafeHandle
{
    internal readonly Handle _handle;
 
    public CalibrationPlate(string filePath)
    {
        _handle = new Handle(filePath);
    }
 
    public void Dispose()
    {
        _handle.Dispose();
        GC.SuppressFinalize(this);
    }
 
    SafeHandle IHasSafeHandle.Handle => _handle;
 
    internal sealed class Handle : SafeHandleZeroOrMinusOneIsInvalid
    {
        internal Handle(string filePath) : base(true)
        {
            DllHelper.ExecuteAndMapReturnCodes(() =>
                CInterface.peak_icv_Calibration_Plate_CreateFromFile(out handle,
                    Utils.ToUtf8(filePath)));
        }
 
        protected override bool ReleaseHandle()
        {
            return CInterface.peak_icv_Calibration_Plate_Destroy(handle) ==
                   Backend.Types.peak_icv_status.PEAK_ICV_STATUS_SUCCESS;
        }
    }
 
    private static class CInterface
    {
        [DllImport(Global.LibraryName, CallingConvention = Global.CallingConvention)]
        public static extern Backend.Types.peak_icv_status peak_icv_Calibration_Plate_Destroy(
            IntPtr calibration_plate_handle);
 
        [DllImport(Global.LibraryName, CallingConvention = Global.CallingConvention)]
        public static extern Backend.Types.peak_icv_status peak_icv_Calibration_Plate_CreateFromFile(
            out IntPtr calibration_plate_handle, byte[] filePath);
    }
}