<?php
/**
* VideoPress Shortcode Handler
*
* This file may or may not be included from the Jetpack VideoPress module.
*/
class VideoPress_Shortcode {
/** @var VideoPress_Shortcode */
protected static $instance;
protected function __construct() {
// By explicitly declaring the provider here, we can speed things up by not relying on oEmbed discovery.
wp_oembed_add_provider( '#^https?://videopress.com/v/.*#', 'http://public-api.wordpress.com/oembed/1.0/', true );
add_shortcode( 'videopress', array( $this, 'shortcode_callback' ) );
add_shortcode( 'wpvideo', array( $this, 'shortcode_callback' ) );
add_filter('wp_video_shortcode_override', array( $this, 'video_shortcode_override' ), 10, 4);
add_filter( 'oembed_fetch_url', array( $this, 'add_oembed_for_parameter' ) );
$this->add_video_embed_hander();
}
/**
* @return VideoPress_Shortcode
*/
public static function initialize() {
if ( ! isset ( self::$instance ) ) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Translate a 'videopress' or 'wpvideo' shortcode and arguments into a video player display.
*
* Expected input formats:
*
* [videopress OcobLTqC]
* [wpvideo OcobLTqC]
*
* @link http://codex.wordpress.org/Shortcode_API Shortcode API
* @param array $attr shortcode attributes
* @return string HTML markup or blank string on fail
*/
public function shortcode_callback( $attr ) {
global $content_width;
/**
* We only accept GUIDs as a first unnamed argument.
*/
$guid = isset( $attr[0] ) ? $attr[0] : null;
if ( isset( $attr['postid'] ) ) {
$guid = get_post_meta( $attr['postid'], 'videopress_guid', true );
}
/**
* Make sure the GUID passed in matches how actual GUIDs are formatted.
*/
if ( ! videopress_is_valid_guid( $guid ) ) {
return '';
}
/**
* Set the defaults
*/
$defaults = array(
'w' => 0, // Width of the video player, in pixels
'at' => 0, // How many seconds in to initially seek to
'hd' => true, // Whether to display a high definition version
'loop' => false, // Whether to loop the video repeatedly
'freedom' => false, // Whether to use only free/libre codecs
'autoplay' => false, // Whether to autoplay the video on load
'permalink' => true, // Whether to display the permalink to the video
'flashonly' => false, // Whether to support the Flash player exclusively
'defaultlangcode' => false, // Default language code
);
$attr = shortcode_atts( $defaults, $attr, 'videopress' );
/**
* Cast the attributes, post-input.
*/
$attr['width'] = absint( $attr['w'] );
$attr['hd'] = (bool) $attr['hd'];
$attr['freedom'] = (bool) $attr['freedom'];
/**
* If the provided width is less than the minimum allowed
* width, or greater than `$content_width` ignore.
*/
if ( $attr['width'] < VIDEOPRESS_MIN_WIDTH ) {
$attr['width'] = 0;
} elseif ( isset( $content_width ) && $content_width > VIDEOPRESS_MIN_WIDTH && $attr['width'] > $content_width ) {
$attr['width'] = 0;
}
/**
* If there was an invalid or unspecified width, set the width equal to the theme's `$content_width`.
*/
if ( 0 === $attr['width'] && isset( $content_width ) && $content_width >= VIDEOPRESS_MIN_WIDTH ) {
$attr['width'] = $content_width;
}
/**
* If the width isn't an even number, reduce it by one (making it even).
*/
if ( 1 === ( $attr['width'] % 2 ) ) {
$attr['width'] --;
}
/**
* Filter the default VideoPress shortcode options.
*
* @module videopress
*
* @since 2.5.0
*
* @param array $args Array of VideoPress shortcode options.
*/
$options = apply_filters( 'videopress_shortcode_options', array(
'at' => (int) $attr['at'],
'hd' => $attr['hd'],
'loop' => $attr['autoplay'] || $attr['loop'],
'freedom' => $attr['freedom'],
'autoplay' => $attr['autoplay'],
'permalink' => $attr['permalink'],
'force_flash' => (bool) $attr['flashonly'],
'defaultlangcode' => $attr['defaultlangcode'],
'forcestatic' => false, // This used to be a displayed option, but now is only
// accessible via the `videopress_shortcode_options` filter.
) );
// Register VideoPress scripts
wp_register_script( 'videopress', 'https://v0.wordpress.com/js/videopress.js', array( 'jquery', 'swfobject' ), '1.09' );
require_once( dirname( __FILE__ ) . '/class.videopress-video.php' );
require_once( dirname( __FILE__ ) . '/class.videopress-player.php' );
$player = new VideoPress_Player( $guid, $attr['width'], $options );
if ( is_feed() ) {
return $player->asXML();
} else {
return $player->asHTML();
}
}
/**
* Override the standard video short tag to also process videopress files as well.
*
* This will, parse the src given, and if it is a videopress file, it will parse as the
* VideoPress shortcode instead.
*
* @param string $html Empty variable to be replaced with shortcode markup.
* @param array $attr Attributes of the video shortcode.
* @param string $content Video shortcode content.
* @param int $instance Unique numeric ID of this video shortcode instance.
*
* @return string
*/
public function video_shortcode_override($html, $attr, $content, $instance) {
$videopress_guid = null;
if ( isset( $attr['videopress_guid'] ) ) {
$videopress_guid = $attr['videopress_guid'];
} else {
// Handle the different possible url attributes
$url_keys = array( 'src', 'mp4' );
foreach ( $url_keys as $key ) {
if ( isset ( $attr[ $key ] ) ) {
$url = $attr[ $key ];
if ( preg_match( '@videos.(videopress\.com|files\.wordpress\.com)/([a-z0-9]{8})/@i', $url, $matches ) ) {
$videopress_guid = $matches[2];
}
break;
}
}
}
if ( $videopress_guid ) {
$videopress_attr = array( $videopress_guid );
if ( isset( $attr['width'] ) ) {
$videopress_attr['w'] = (int) $attr['width'];
}
if ( isset( $attr['autoplay'] ) ) {
$videopress_attr['autoplay'] = $attr['autoplay'];
}
if ( isset( $attr['loop'] ) ) {
$videopress_attr['loop'] = $attr['loop'];
}
// Then display the VideoPress version of the stored GUID!
return $this->shortcode_callback( $videopress_attr );
}
return '';
}
/**
* Adds a `for` query parameter to the oembed provider request URL.
*
* @param String $oembed_provider
* @return String $ehnanced_oembed_provider
*/
public function add_oembed_for_parameter( $oembed_provider ) {
if ( false === stripos( $oembed_provider, 'videopress.com' ) ) {
return $oembed_provider;
}
return add_query_arg( 'for', parse_url( home_url(), PHP_URL_HOST ), $oembed_provider );
}
/**
* Register a VideoPress handler for direct links to .mov files (and potential other non-handled types later).
*/
public function add_video_embed_hander() {
// These are the video extensions that VideoPress can transcode and considers video as well (even if core does not).
$extensions = array( 'mov' );
$override_extensions = implode( '|', $extensions );
$regex = "#^https?://videos.(videopress.com|files.wordpress.com)/.+?.($override_extensions)$#i";
/** This filter is already documented in core/wp-includes/embed.php */
$filter = apply_filters( 'wp_video_embed_handler', 'wp_embed_handler_video' );
wp_embed_register_handler( 'video', $regex, $filter, 10 );
}
}
VideoPress_Shortcode::initialize();