BP_Media_Extractor::extract_embeds( string $richtext, string $plaintext, array $extra_args = array() )

	protected function extract_embeds( $richtext, $plaintext, $extra_args = array() ) {
		$data   = array( 'has' => array( 'embeds' => 0 ), 'embeds' => array() );
		$embeds = array();

		if ( ! function_exists( '_wp_oembed_get_object' ) ) {
			require( ABSPATH . WPINC . '/class-oembed.php' );
		}


		// Matches any links on their own lines. They may be oEmbeds.
		if ( stripos( $richtext, 'http' ) !== false ) {
			preg_match_all( '#^\s*(https?://[^\s"]+)\s*$#im', $richtext, $matches );

			if ( ! empty( $matches[1] ) ) {
				$matches[1] = array_unique( $matches[1] );
				$oembed     = _wp_oembed_get_object();

				foreach ( $matches[1] as $link ) {
					// Skip data URIs.
					if ( strtolower( substr( $link, 0, 5 ) ) === 'data:' ) {
						continue;
					}

					foreach ( $oembed->providers as $matchmask => $oembed_data ) {
						list( , $is_regex ) = $oembed_data;

						// Turn asterisk-type provider URLs into regexs.
						if ( ! $is_regex ) {
							$matchmask = '#' . str_replace( '___wildcard___', '(.+)', preg_quote( str_replace( '*', '___wildcard___', $matchmask ), '#' ) ) . '#i';
							$matchmask = preg_replace( '|^#http\\\://|', '#https?\://', $matchmask );
						}

						// Check whether this "link" is really an oEmbed.
						if ( preg_match( $matchmask, $link ) ) {
							$data['embeds'][] = array( 'url' => $link );

							break;
						}
					}
				}
			}
		}

		$data['has']['embeds'] = count( $data['embeds'] );

		/**
		 * Filters embeds extracted from text.
		 *
		 * @since BuddyPress 2.3.0
		 *
		 * @param array  $data       Extracted embeds. See {@link BP_Media_Extractor::extract_embeds()} for format.
		 * @param string $richtext   Content to parse.
		 * @param string $plaintext  Copy of $richtext without any markup.
		 * @param array  $extra_args Bespoke data for a particular extractor.
		 */
		return apply_filters( 'bp_media_extractor_embeds', $data, $richtext, $plaintext, $extra_args );
	}