[DllImport ("gstreamer-0.10.dll") ]
static extern void gst_object_sink (IntPtr raw);
[DllImport ("gstreamer-0.10.dll") ]
static extern IntPtr gst_object_ref (IntPtr raw);

protected override IntPtr Raw {
  get {
    return base.Raw;
  }
  set {
    if (value != IntPtr.Zero) {
      gst_object_ref (value);
      gst_object_sink (value);
    }
    base.Raw = value;
  }
}


[DllImport ("gstreamer-0.10.dll") ]
static extern bool gst_object_set_parent (IntPtr raw, IntPtr parent);
[DllImport ("gstreamer-0.10.dll") ]
static extern IntPtr gst_object_get_parent (IntPtr raw);

public Gst.Object Parent {
  set {
    bool raw_ret = gst_object_set_parent (Handle, value == null ? IntPtr.Zero : value.Handle);
    if (!raw_ret)
      throw new ApplicationException ();
  }
  get {
    IntPtr raw_ret = gst_object_get_parent (Handle);
    Gst.Object ret = GLib.Object.GetObject (raw_ret, true) as Gst.Object;
    return ret;
  }
}

[DllImport ("gstreamersharpglue-0.10") ]
extern static uint gstsharp_gst_object_get_lock_offset ();

static uint lock_offset = gstsharp_gst_object_get_lock_offset ();
internal IntPtr LockPtr {
  get {
    unsafe {
      IntPtr* raw_ptr = (IntPtr*) ( ( (byte*) Handle) + lock_offset);
      return (*raw_ptr);
    }
  }
}

[DllImport ("libglib-2.0-0.dll") ]
static extern void g_mutex_lock (IntPtr mutex);
[DllImport ("libglib-2.0-0.dll") ]
static extern void g_mutex_unlock (IntPtr mutex);
[DllImport ("libglib-2.0-0.dll") ]
static extern bool g_mutex_trylock (IntPtr mutex);

public void Lock () {
  g_mutex_lock (LockPtr);
}

public void Unlock () {
  g_mutex_unlock (LockPtr);
}

public bool TryLock () {
  return g_mutex_trylock (LockPtr);
}

[DllImport ("gstreamer-0.10.dll") ]
static extern bool gst_object_check_uniqueness (IntPtr list, IntPtr name);

public static bool CheckUniqueness (Gst.Object[] objects, string name) {
  GLib.List list = new GLib.List (objects, typeof (Gst.Object), false, false);
  IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
  bool raw_ret = gst_object_check_uniqueness (list.Handle, native_name);
  bool ret = raw_ret;
  GLib.Marshaller.Free (native_name);
  return ret;
}