allow-geodata-uploads.php

<?php
/**
 * Allow Geodate uploads
 *
 * @package AllowGeodataUploads
 * @author Bernhard Kau
 * @license GPLv3
 *
 * @wordpress-plugin
 * Plugin Name: Allow Geodate uploads
 * Description: Enable the users of your blog to upload Geodate files
 * Version: 1.0.0
 * Author: Bernhard Kau
 * Author URI: https://kau-boys.de
 * License: GPLv3
 * License URI: http://www.gnu.org/licenses/gpl-3.0
 */

/**
 * Add the geodata mime types to the allowed mimes
 *
 * @param array $mimes The allowed mimes.
 *
 * @return array
 */
function allow_geodata_mime_types( $mimes ) {
	$mimes['gpx'] = 'application/gpx+xml';
	$mimes['tcx'] = 'application/tcx+xml';
	return $mimes;
}
add_filter( 'upload_mimes', 'allow_geodata_mime_types' );