podcast_publisher-1.0.0-alpha3/src/PodcastAudioService.php

<?php

namespace Drupal\podcast_publisher;

use Drupal\file\FileInterface;

/**
 * Service providing helper functions for audio file handling.
 */
class PodcastAudioService implements PodcastAudioServiceInterface {

  /**
   * {@inheritdoc}
   */
  public function getDuration(FileInterface $file) {
    $id3 = new \getID3();
    $fileinfo = $id3->analyze($file->getFileUri());
    return $fileinfo['playtime_string'] ?? '0';
  }

}