public static int EntryPoint(string arg)
{
_sharpScrobbler = new SharpScrobbler();
_sharpScrobblerGCHandle = GCHandle.Alloc(_sharpScrobbler);
_managedExports = new ManagedExports
{
FreeManagedExports = FreeManagedExports,
LogInfo = LogInfo,
LogWarning = LogWarning,
LogVerbose = LogVerbose,
AskUserForNewAuthorizedSessionKey = _sharpScrobbler.AskUserForNewAuthorizedSessionKey,
SetSessionKey = _sharpScrobbler.SetSessionKey,
OnTrackCanScrobble = _sharpScrobbler.OnTrackCanScrobble,
OnTrackStartsPlaying = _sharpScrobbler.OnTrackStartsPlaying,
OnTrackCompletes = _sharpScrobbler.OnTrackCompletes,
};
_managedExportsGCHandle = GCHandle.Alloc(_managedExports);
// ManagedExports is not blittable, so we need a copy.
// Making a copy in unmanaged memory from the managed side ensures the GC will not mess with it (I hope)
_pManagedExports = Marshal.AllocHGlobal(Marshal.SizeOf(_managedExports));
Marshal.StructureToPtr(_managedExports, _pManagedExports, false);
NativeImports.InitializeManagedExports(_pManagedExports);
return(0);
}
private static void FreeManagedExports()
{
Marshal.DestroyStructure <ManagedExports>(_pManagedExports);
Marshal.FreeHGlobal(_pManagedExports);
_managedExportsGCHandle.Free();
_sharpScrobblerGCHandle.Free();
_sharpScrobbler?.Dispose();
_sharpScrobbler = null;
_sharpScrobblerGCHandle = default;
_managedExports = null;
_managedExportsGCHandle = default;
_pManagedExports = default;
}
