bbp_get_blog_roles()

function bbp_get_blog_roles() {

	// Get WordPress's roles (returns $wp_roles global)
	$wp_roles  = bbp_get_wp_roles();

	// Apply the WordPress 'editable_roles' filter to let plugins ride along.
	//
	// We use this internally via bbp_filter_blog_editable_roles() to remove
	// any custom Forums roles that are added to the global.
	$the_roles = isset( $wp_roles->roles ) ? $wp_roles->roles : false;
	$all_roles = apply_filters( 'editable_roles', $the_roles );

	return apply_filters( 'bbp_get_blog_roles', $all_roles, $wp_roles );
}