FilterOEmbedEssence.php

<?php
/**
 * @file
 * Contains FilterOEmbed.php.
 */

namespace Drupal\oembed\Plugin\Filter;


use Drupal\filter\FilterProcessResult;
use Drupal\filter\Plugin\FilterBase;
use Essence\Essence;
use Essence\Media;

/**
 * Provides a filter to convert urls to oembed output.
 *
 * @Filter(
 *   id = "filter_oembed",
 *   title = @Translation("Convert urls to oembed output."),
 *   type = Drupal\filter\Plugin\FilterInterface::TYPE_TRANSFORM_IRREVERSIBLE
 * )
 */
class FilterOEmbed extends FilterBase {

  /**
   * {@inheritdoc}
   */
  public function process($text, $langcode) {
    $essence = Essence::instance();
    // Hard coded a maxwidth/height to make it easier to test against for the moment. Not required.
    $text = $essence->replace($text, array($this, 'embed'), [
      'maxwidth' => 640,
      'maxheight' => 480
    ]);
    return new FilterProcessResult($text);
  }

  public function embed(Media $media) {
    /**
     * Do something with this object before returning the html if you like.
     */
    return $media->get('html');
  }

}