a #GAsyncResult
Return location for the width of the image, or %NULL
Return location for the height of the image, or %NULL
A #GdkPixbufFormat describing the image format of the file or %NULL if the image format wasn't recognized. The return value is owned by GdkPixbuf and should not be freed.
GException on failure.
2.32
Finishes an asynchronous pixbuf parsing operation started with gdk_pixbuf_get_file_info_async().