BP_Embed::parse_oembed( int $id, string $url, array $attr, array $rawattr )

	public function parse_oembed( $id, $url, $attr, $rawattr ) {
		$id = intval( $id );

		if ( $id ) {
			// Setup the cachekey.
			$cachekey = '_oembed_' . md5( $url . serialize( $attr ) );

			// Let components / plugins grab their cache.
			$cache = '';

			/**
			 * Filters the cache value to be used in the oEmbed, if exists.
			 *
			 * @since BuddyPress 1.5.0
			 *
			 * @param string $cache    Empty initial cache value.
			 * @param int    $id       ID that the caching is for.
			 * @param string $cachekey Key to use for the caching in the database.
			 * @param string $url      The URL attempting to be embedded.
			 * @param array  $attr     Parsed shortcode attributes.
			 * @param array  $rawattr  Unparsed shortcode attributes.
			 */
			$cache = apply_filters( 'bp_embed_get_cache', $cache, $id, $cachekey, $url, $attr, $rawattr );

			// Grab cache and return it if available.
			if ( !empty( $cache ) ) {

				/**
				 * Filters the found cache for the provided URL.
				 *
				 * @since BuddyPress 1.5.0
				 *
				 * @param string $cache   Cached HTML markup for embed.
				 * @param string $url     The URL being embedded.
				 * @param array  $attr    Parsed shortcode attributes.
				 * @param array  $rawattr Unparased shortcode attributes.
				 */
				return apply_filters( 'bp_embed_oembed_html', $cache, $url, $attr, $rawattr );

			// If no cache, ping the oEmbed provider and cache the result.
			} else {
				$html = wp_oembed_get( $url, $attr );
				$cache = ( $html ) ? $html : $url;

				/**
				 * Fires if there is no existing cache and triggers cache setting.
				 *
				 * Lets components / plugins save their cache.
				 *
				 * @since BuddyPress 1.5.0
				 *
				 * @param string $cache    Newly cached HTML markup for embed.
				 * @param string $cachekey Key to use for the caching in the database.
				 * @param int    $id       ID to do the caching for.
				 */
				do_action( 'bp_embed_update_cache', $cache, $cachekey, $id );

				// If there was a result, return it.
				if ( $html ) {

					/** This filter is documented in bp-core/classes/class-bp-embed.php */
					return apply_filters( 'bp_embed_oembed_html', $html, $url, $attr, $rawattr );
				}
			}
		}

		// Still unknown.
		return $this->maybe_make_link( $url );
	}