function get_media_item_args( $args ) {

    if ($args["delete"] && $_GET["action" == "delete-post"])
    {
        $current_post_id = !empty( $_GET['id'] ) ? (int) $_GET['id'] : 0;

        if ($current_post_id > 0)
        {
            //Do your thing here.
        }
    }

    return $args;
}
add_filter( 'get_media_item_args', 'get_media_item_args', 10, 1 );