pub unsafe extern "C" fn gst_gl_display_retrieve_window(
display: *mut GstGLDisplay,
data: gpointer,
compare_func: GCompareFunc,
) -> *mut GstGLWindow
pub unsafe extern "C" fn gst_gl_display_retrieve_window(
display: *mut GstGLDisplay,
data: gpointer,
compare_func: GCompareFunc,
) -> *mut GstGLWindow