Serializer.cs

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using System.Runtime.InteropServices;
using IDSImaging.Peak.Common.Serialization;
 
namespace IDSImaging.Peak.ICV.Serialization;
 
public class Serializer : ISerializer
{
    public Serializer(SerializationType type = SerializationType.Json)
    {
        SerializationType = type;
    }
 
    private SerializationType SerializationType { get; }
 
    public void Write(IArchive archive, Stream stream)
    {
        IntPtr handle = (archive as Archive)?._handle.DangerousGetHandle() ?? IntPtr.Zero;
        if (handle == IntPtr.Zero)
        {
            throw new IcvNullPointerException("Invalid archive handle.");
        }
 
        nuint dataSize = 0;
        DllHelper.ExecuteAndMapReturnCodes(() =>
            CInterface.peak_icv_Archive_ToString_GetSizeInBytes(handle, (int) SerializationType, ref dataSize));
 
        var buffer = new byte[dataSize];
 
        // Fill buffer
        DllHelper.ExecuteAndMapReturnCodes(() =>
            CInterface.peak_icv_Archive_ToString(handle, (int) SerializationType, buffer, ref dataSize));
 
        // Write to stream (excluding trailing null if present)
        stream.Write(buffer, 0, (int) (dataSize > 0 ? dataSize - 1 : 0));
    }
 
    private static class CInterface
    {
        [DllImport(Global.LibraryName, CallingConvention = Global.CallingConvention)]
        public static extern Backend.Types.peak_icv_status peak_icv_Archive_ToString_GetSizeInBytes(
            IntPtr archiveHandle,
            int type, ref nuint size);
 
        [DllImport(Global.LibraryName, CallingConvention = Global.CallingConvention)]
        public static extern Backend.Types.peak_icv_status peak_icv_Archive_ToString(IntPtr archiveHandle,
            int type, byte[] data, ref nuint dataSize);
    }
}