bp_friends_filter_media_scope( array $retval = array(), array $filter = array() )

function bp_friends_filter_media_scope( $retval = array(), $filter = array() ) {

	// Determine the user_id.
	if ( ! empty( $filter['user_id'] ) ) {
		$user_id = $filter['user_id'];
	} else {
		$user_id = bp_displayed_user_id()
			? bp_displayed_user_id()
			: bp_loggedin_user_id();
	}

	// Determine friends of user.
	$friends = friends_get_friend_user_ids( $user_id );
	if ( empty( $friends ) ) {
		$friends = array( 0 );
	}

	if ( $user_id !== bp_loggedin_user_id() ) {
		array_push( $friends, bp_loggedin_user_id() );
	}

	if ( ! bp_is_profile_media_support_enabled() ) {
		$friends = array( 0 );
	}

	$retval = array(
		'relation' => 'AND',
		array(
			'column'  => 'user_id',
			'compare' => 'IN',
			'value'   => (array) $friends,
		),
		array(
			'column' => 'privacy',
			'value'  => 'friends',
		),
	);

	if ( ! bp_is_profile_albums_support_enabled() ) {
		$retval[] = array(
			'column'  => 'album_id',
			'compare' => '=',
			'value'   => '0',
		);
	}

	if ( ! empty( $filter['search_terms'] ) ) {
		$retval[] = array(
			'column'  => 'title',
			'compare' => 'LIKE',
			'value'   => $filter['search_terms'],
		);
	}

	return $retval;
}