/**

// Oh look, a singleton

private static $__instance = null;

// Allowed extensions must match http://code.trac.wordpress.org/browser/photon/index.php#L31

protected static $extensions = array(

'gif',

'jpg',

'jpeg',

'png'

);

// Don't access this directly. Instead, use self::image_sizes() so it's actually populated with something.

protected static $image_sizes = null;

/**

public static function instance() {

if ( ! is_a( self::$__instance, 'Jetpack_Photon' ) ) {

self::$__instance = new Jetpack_Photon;

self::$__instance->setup();

}

return self::$__instance;

}

/**

private function __construct() {}

/**

private function setup() {

if ( ! function_exists( 'jetpack_photon_url' ) )

return;

// Images in post content and galleries

add_filter( 'the_content', array( __CLASS__, 'filter_the_content' ), 999999 );

add_filter( 'get_post_galleries', array( __CLASS__, 'filter_the_galleries' ), 999999 );

// Core image retrieval

add_filter( 'image_downsize', array( $this, 'filter_image_downsize' ), 10, 3 );

// Responsive image srcset substitution

add_filter( 'wp_calculate_image_srcset', array( $this, 'filter_srcset_array' ), 10, 4 );

add_filter( 'wp_calculate_image_sizes', array( $this, 'filter_sizes' ), 1, 2 ); // Early so themes can still easily filter.

// Helpers for maniuplated images

add_action( 'wp_enqueue_scripts', array( $this, 'action_wp_enqueue_scripts' ), 9 );

}

/**

/**

public static function parse_images_from_html( $content ) {

$images = array();

if ( preg_match_all( '#(?:<a[^>]+?href=["|\'](?P<link_url>[^\s]+?)["|\'][^>]*?>\s*)?(?P<img_tag><img[^>]*?\s+?src=["|\'](?P<img_url>[^\s]+?)["|\'].*?>){1}(?:\s*</a>)?#is', $content, $images ) ) {

foreach ( $images as $key => $unused ) {

// Simplify the output as much as possible, mostly for confirming test results.

if ( is_numeric( $key ) && $key > 0 )

unset( $images[$key] );

}

return $images;

}

return array();

}

/**

public static function parse_dimensions_from_filename( $src ) {

$width_height_string = array();

if ( preg_match( '#-(\d+)x(\d+)\.(?:' . implode('|', self::$extensions ) . '){1}$#i', $src, $width_height_string ) ) {

$width = (int) $width_height_string[1];

$height = (int) $width_height_string[2];

if ( $width && $height )

return array( $width, $height );

}

return array( false, false );

}

/**

public static function filter_the_content( $content ) {

$images = Jetpack_Photon::parse_images_from_html( $content );

if ( ! empty( $images ) ) {

$content_width = Jetpack::get_content_width();

$image_sizes = self::image_sizes();

$upload_dir = wp_get_upload_dir();

foreach ( $images[0] as $index => $tag ) {

// Default to resize, though fit may be used in certain cases where a dimension cannot be ascertained

$transform = 'resize';

// Start with a clean attachment ID each time

$attachment_id = false;

// Flag if we need to munge a fullsize URL

$fullsize_url = false;

// Identify image source

$src = $src_orig = $images['img_url'][ $index ];

/**

if ( apply_filters( 'jetpack_photon_skip_image', false, $src, $tag ) )

continue;

// Support Automattic's Lazy Load plugin

// Can't modify $tag yet as we need unadulterated version later

if ( preg_match( '#data-lazy-src=["|\'](.+?)["|\']#i', $images['img_tag'][ $index ], $lazy_load_src ) ) {

$placeholder_src = $placeholder_src_orig = $src;

$src = $src_orig = $lazy_load_src[1];

} elseif ( preg_match( '#data-lazy-original=["|\'](.+?)["|\']#i', $images['img_tag'][ $index ], $lazy_load_src ) ) {

$placeholder_src = $placeholder_src_orig = $src;

$src = $src_orig = $lazy_load_src[1];

}

// Check if image URL should be used with Photon

if ( self::validate_image_url( $src ) ) {

// Find the width and height attributes

$width = $height = false;

// First, check the image tag

if ( preg_match( '#width=["|\']?([\d%]+)["|\']?#i', $images['img_tag'][ $index ], $width_string ) )

$width = $width_string[1];

if ( preg_match( '#height=["|\']?([\d%]+)["|\']?#i', $images['img_tag'][ $index ], $height_string ) )

$height = $height_string[1];

// Can't pass both a relative width and height, so unset the height in favor of not breaking the horizontal layout.

if ( false !== strpos( $width, '%' ) && false !== strpos( $height, '%' ) )

$width = $height = false;

// Detect WP registered image size from HTML class

if ( preg_match( '#class=["|\']?[^"\']*size-([^"\'\s]+)[^"\']*["|\']?#i', $images['img_tag'][ $index ], $size ) ) {

$size = array_pop( $size );

if ( false === $width && false === $height && 'full' != $size && array_key_exists( $size, $image_sizes ) ) {

$width = (int) $image_sizes[ $size ]['width'];

$height = (int) $image_sizes[ $size ]['height'];

$transform = $image_sizes[ $size ]['crop'] ? 'resize' : 'fit';

}

} else {

unset( $size );

}

// WP Attachment ID, if uploaded to this site

if (

preg_match( '#class=["|\']?[^"\']*wp-image-([\d]+)[^"\']*["|\']?#i', $images['img_tag'][ $index ], $attachment_id ) &&

(

0 === strpos( $src, $upload_dir['baseurl'] ) ||

/**

apply_filters( 'jetpack_photon_image_is_local', false, compact( 'src', 'tag', 'images', 'index' ) )

)

) {

$attachment_id = intval( array_pop( $attachment_id ) );

if ( $attachment_id ) {

$attachment = get_post( $attachment_id );

// Basic check on returned post object

if ( is_object( $attachment ) && ! is_wp_error( $attachment ) && 'attachment' == $attachment->post_type ) {

$src_per_wp = wp_get_attachment_image_src( $attachment_id, isset( $size ) ? $size : 'full' );

if ( self::validate_image_url( $src_per_wp[0] ) ) {

$src = $src_per_wp[0];

$fullsize_url = true;

// Prevent image distortion if a detected dimension exceeds the image's natural dimensions

if ( ( false !== $width && $width > $src_per_wp[1] ) || ( false !== $height && $height > $src_per_wp[2] ) ) {

$width = false === $width ? false : min( $width, $src_per_wp[1] );

$height = false === $height ? false : min( $height, $src_per_wp[2] );

}

// If no width and height are found, max out at source image's natural dimensions

// Otherwise, respect registered image sizes' cropping setting

if ( false === $width && false === $height ) {

$width = $src_per_wp[1];

$height = $src_per_wp[2];

$transform = 'fit';

} elseif ( isset( $size ) && array_key_exists( $size, $image_sizes ) && isset( $image_sizes[ $size ]['crop'] ) ) {

$transform = (bool) $image_sizes[ $size ]['crop'] ? 'resize' : 'fit';

}

}

} else {

unset( $attachment_id );

unset( $attachment );

}

}

}

// If image tag lacks width and height arguments, try to determine from strings WP appends to resized image filenames.

if ( false === $width && false === $height ) {

list( $width, $height ) = Jetpack_Photon::parse_dimensions_from_filename( $src );

}

// If width is available, constrain to $content_width

if ( false !== $width && false === strpos( $width, '%' ) && is_numeric( $content_width ) ) {

if ( $width > $content_width && false !== $height && false === strpos( $height, '%' ) ) {

$height = round( ( $content_width * $height ) / $width );

$width = $content_width;

} elseif ( $width > $content_width ) {

$width = $content_width;

}

}

// Set a width if none is found and $content_width is available

// If width is set in this manner and height is available, use `fit` instead of `resize` to prevent skewing

if ( false === $width && is_numeric( $content_width ) ) {

$width = (int) $content_width;

if ( false !== $height )

$transform = 'fit';

}

// Detect if image source is for a custom-cropped thumbnail and prevent further URL manipulation.

if ( ! $fullsize_url && preg_match_all( '#-e[a-z0-9]+(-\d+x\d+)?\.(' . implode('|', self::$extensions ) . '){1}$#i', basename( $src ), $filename ) )

$fullsize_url = true;

// Build URL, first maybe removing WP's resized string so we pass the original image to Photon

if ( ! $fullsize_url ) {

$src = self::strip_image_dimensions_maybe( $src );

}

// Build array of Photon args and expose to filter before passing to Photon URL function

$args = array();

if ( false !== $width && false !== $height && false === strpos( $width, '%' ) && false === strpos( $height, '%' ) )

$args[ $transform ] = $width . ',' . $height;

elseif ( false !== $width )

$args['w'] = $width;

elseif ( false !== $height )

$args['h'] = $height;

/**

$args = apply_filters( 'jetpack_photon_post_image_args', $args, compact( 'tag', 'src', 'src_orig', 'width', 'height' ) );

$photon_url = jetpack_photon_url( $src, $args );

// Modify image tag if Photon function provides a URL

// Ensure changes are only applied to the current image by copying and modifying the matched tag, then replacing the entire tag with our modified version.

if ( $src != $photon_url ) {

$new_tag = $tag;

// If present, replace the link href with a Photoned URL for the full-size image.

if ( ! empty( $images['link_url'][ $index ] ) && self::validate_image_url( $images['link_url'][ $index ] ) )

$new_tag = preg_replace( '#(href=["|\'])' . $images['link_url'][ $index ] . '(["|\'])#i', '\1' . jetpack_photon_url( $images['link_url'][ $index ] ) . '\2', $new_tag, 1 );

// Supplant the original source value with our Photon URL

$photon_url = esc_url( $photon_url );

$new_tag = str_replace( $src_orig, $photon_url, $new_tag );

// If Lazy Load is in use, pass placeholder image through Photon

if ( isset( $placeholder_src ) && self::validate_image_url( $placeholder_src ) ) {

$placeholder_src = jetpack_photon_url( $placeholder_src );

if ( $placeholder_src != $placeholder_src_orig )

$new_tag = str_replace( $placeholder_src_orig, esc_url( $placeholder_src ), $new_tag );

unset( $placeholder_src );

}

// Remove the width and height arguments from the tag to prevent distortion

$new_tag = preg_replace( '#(?<=\s)(width|height)=["|\']?[\d%]+["|\']?\s?#i', '', $new_tag );

// Tag an image for dimension checking

$new_tag = preg_replace( '#(\s?/)?>(\s*</a>)?$#i', ' data-recalc-dims="1"\1>\2', $new_tag );

// Replace original tag with modified version

$content = str_replace( $tag, $new_tag, $content );

}

} elseif ( preg_match( '#^http(s)?://i[\d]{1}.wp.com#', $src ) && ! empty( $images['link_url'][ $index ] ) && self::validate_image_url( $images['link_url'][ $index ] ) ) {

$new_tag = preg_replace( '#(href=["|\'])' . $images['link_url'][ $index ] . '(["|\'])#i', '\1' . jetpack_photon_url( $images['link_url'][ $index ] ) . '\2', $tag, 1 );

$content = str_replace( $tag, $new_tag, $content );

}

}

}

return $content;

}

public static function filter_the_galleries( $galleries ) {

if ( empty( $galleries ) || ! is_array( $galleries ) ) {

return $galleries;

}

// Pass by reference, so we can modify them in place.

foreach ( $galleries as &$this_gallery ) {

if ( is_string( $this_gallery ) ) {

$this_gallery = self::filter_the_content( $this_gallery );

// LEAVING COMMENTED OUT as for the moment it doesn't seem

// necessary and I'm not sure how it would propagate through.

// } elseif ( is_array( $this_gallery )

// && ! empty( $this_gallery['src'] )

// && ! empty( $this_gallery['type'] )

// && in_array( $this_gallery['type'], array( 'rectangle', 'square', 'circle' ) ) ) {

// $this_gallery['src'] = array_map( 'jetpack_photon_url', $this_gallery['src'] );

}

}

unset( $this_gallery ); // break the reference.

return $galleries;

}

/**

/**

public function filter_image_downsize( $image, $attachment_id, $size ) {

// Don't foul up the admin side of things, unless a plugin wants to.

if ( is_admin() &&

/**

false === apply_filters( 'jetpack_photon_admin_allow_image_downsize', false, compact( 'image', 'attachment_id', 'size' ) )

) {

return $image;

}

/**

if ( apply_filters( 'jetpack_photon_override_image_downsize', false, compact( 'image', 'attachment_id', 'size' ) ) ) {

return $image;

}

// Get the image URL and proceed with Photon-ification if successful

$image_url = wp_get_attachment_url( $attachment_id );

// Set this to true later when we know we have size meta.

$has_size_meta = false;

if ( $image_url ) {

// Check if image URL should be used with Photon

if ( ! self::validate_image_url( $image_url ) )

return $image;

$intermediate = true; // For the fourth array item returned by the image_downsize filter.

// If an image is requested with a size known to WordPress, use that size's settings with Photon

if ( ( is_string( $size ) || is_int( $size ) ) && array_key_exists( $size, self::image_sizes() ) ) {

$image_args = self::image_sizes();

$image_args = $image_args[ $size ];

$photon_args = array();

$image_meta = image_get_intermediate_size( $attachment_id, $size );

// 'full' is a special case: We need consistent data regardless of the requested size.

if ( 'full' == $size ) {

$image_meta = wp_get_attachment_metadata( $attachment_id );

$intermediate = false;

} elseif ( ! $image_meta ) {

// If we still don't have any image meta at this point, it's probably from a custom thumbnail size

// for an image that was uploaded before the custom image was added to the theme. Try to determine the size manually.

$image_meta = wp_get_attachment_metadata( $attachment_id );

if ( isset( $image_meta['width'], $image_meta['height'] ) ) {

$image_resized = image_resize_dimensions( $image_meta['width'], $image_meta['height'], $image_args['width'], $image_args['height'], $image_args['crop'] );

if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image.

$image_meta['width'] = $image_resized[6];

$image_meta['height'] = $image_resized[7];

}

}

}

if ( isset( $image_meta['width'], $image_meta['height'] ) ) {

$image_args['width'] = $image_meta['width'];

$image_args['height'] = $image_meta['height'];

list( $image_args['width'], $image_args['height'] ) = image_constrain_size_for_editor( $image_args['width'], $image_args['height'], $size, 'display' );

$has_size_meta = true;

}

// Expose determined arguments to a filter before passing to Photon

$transform = $image_args['crop'] ? 'resize' : 'fit';

// Check specified image dimensions and account for possible zero values; photon fails to resize if a dimension is zero.

if ( 0 == $image_args['width'] || 0 == $image_args['height'] ) {

if ( 0 == $image_args['width'] && 0 < $image_args['height'] ) {

$photon_args['h'] = $image_args['height'];

} elseif ( 0 == $image_args['height'] && 0 < $image_args['width'] ) {

$photon_args['w'] = $image_args['width'];

}

} else {

if ( ( 'resize' === $transform ) && $image_meta = wp_get_attachment_metadata( $attachment_id ) ) {

if ( isset( $image_meta['width'], $image_meta['height'] ) ) {

// Lets make sure that we don't upscale images since wp never upscales them as well

$smaller_width = ( ( $image_meta['width'] < $image_args['width'] ) ? $image_meta['width'] : $image_args['width'] );

$smaller_height = ( ( $image_meta['height'] < $image_args['height'] ) ? $image_meta['height'] : $image_args['height'] );

$photon_args[ $transform ] = $smaller_width . ',' . $smaller_height;

}

} else {

$photon_args[ $transform ] = $image_args['width'] . ',' . $image_args['height'];

}

}

/**

$photon_args = apply_filters( 'jetpack_photon_image_downsize_string', $photon_args, compact( 'image_args', 'image_url', 'attachment_id', 'size', 'transform' ) );

// Generate Photon URL

$image = array(

jetpack_photon_url( $image_url, $photon_args ),

$has_size_meta ? $image_args['width'] : false,

$has_size_meta ? $image_args['height'] : false,

$intermediate

);

} elseif ( is_array( $size ) ) {

// Pull width and height values from the provided array, if possible

$width = isset( $size[0] ) ? (int) $size[0] : false;

$height = isset( $size[1] ) ? (int) $size[1] : false;

// Don't bother if necessary parameters aren't passed.

if ( ! $width || ! $height ) {

return $image;

}

$image_meta = wp_get_attachment_metadata( $attachment_id );

if ( isset( $image_meta['width'], $image_meta['height'] ) ) {

$image_resized = image_resize_dimensions( $image_meta['width'], $image_meta['height'], $width, $height );

if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image.

$width = $image_resized[6];

$height = $image_resized[7];

} else {

$width = $image_meta['width'];

$height = $image_meta['height'];

}

$has_size_meta = true;

}

list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size );

// Expose arguments to a filter before passing to Photon

$photon_args = array(

'fit' => $width . ',' . $height

);

/**

$photon_args = apply_filters( 'jetpack_photon_image_downsize_array', $photon_args, compact( 'width', 'height', 'image_url', 'attachment_id' ) );

// Generate Photon URL

$image = array(

jetpack_photon_url( $image_url, $photon_args ),

$has_size_meta ? $width : false,

$has_size_meta ? $height : false,

$intermediate

);

}

}

return $image;

}

/**

public function filter_srcset_array( $sources, $size_array, $image_src, $image_meta ) {

$upload_dir = wp_get_upload_dir();

foreach ( $sources as $i => $source ) {

if ( ! self::validate_image_url( $source['url'] ) ) {

continue;

}

/** This filter is already documented in class.photon.php */

if ( apply_filters( 'jetpack_photon_skip_image', false, $source['url'], $source ) ) {

continue;

}

$url = $source['url'];

list( $width, $height ) = Jetpack_Photon::parse_dimensions_from_filename( $url );

// It's quicker to get the full size with the data we have already, if available

if ( isset( $image_meta['file'] ) ) {

$url = trailingslashit( $upload_dir['baseurl'] ) . $image_meta['file'];

} else {

$url = Jetpack_Photon::strip_image_dimensions_maybe( $url );

}

$args = array();

if ( 'w' === $source['descriptor'] ) {

if ( $height && ( $source['value'] == $width ) ) {

$args['resize'] = $width . ',' . $height;

} else {

$args['w'] = $source['value'];

}

}

$sources[ $i ]['url'] = jetpack_photon_url( $url, $args );

}

/**

/**

$multipliers = apply_filters( 'jetpack_photon_srcset_multipliers', array( 2, 3 ) );

$url = trailingslashit( $upload_dir['baseurl'] ) . $image_meta['file'];

if (

/** Short-circuit via jetpack_photon_srcset_multipliers filter. */

is_array( $multipliers )

/** This filter is already documented in class.photon.php */

&& ! apply_filters( 'jetpack_photon_skip_image', false, $url, null )

/** Verify basic meta is intact. */

&& isset( $image_meta['width'] ) && isset( $image_meta['height'] ) && isset( $image_meta['file'] )

/** Verify we have the requested width/height. */

&& isset( $size_array[0] ) && isset( $size_array[1] )

) {

$fullwidth = $image_meta['width'];

$fullheight = $image_meta['height'];

$reqwidth = $size_array[0];

$reqheight = $size_array[1];

$constrained_size = wp_constrain_dimensions( $fullwidth, $fullheight, $reqwidth );

$expected_size = array( $reqwidth, $reqheight );

if ( abs( $constrained_size[0] - $expected_size[0] ) <= 1 && abs( $constrained_size[1] - $expected_size[1] ) <= 1 ) {

$crop = 'soft';

$base = Jetpack::get_content_width() ? Jetpack::get_content_width() : 1000; // Provide a default width if none set by the theme.

} else {

$crop = 'hard';

$base = $reqwidth;

}

$currentwidths = array_keys( $sources );

$newsources = null;

foreach ( $multipliers as $multiplier ) {

$newwidth = $base * $multiplier;

foreach ( $currentwidths as $currentwidth ){

// If a new width would be within 100 pixes of an existing one or larger than the full size image, skip.

if ( abs( $currentwidth - $newwidth ) < 50 || ( $newwidth > $fullwidth ) ) {

continue 2; // Back to the foreach ( $multipliers as $multiplier )

}

} // foreach ( $currentwidths as $currentwidth ){

if ( 'soft' == $crop ) {

$args = array(

'w' => $newwidth,

);

} else { // hard crop, e.g. add_image_size( 'example', 200, 200, true );

$args = array(

'zoom' => $multiplier,

'resize' => $reqwidth . ',' . $reqheight,

);

}

$newsources[ $newwidth ] = array(

'url' => jetpack_photon_url( $url, $args ),

'descriptor' => 'w',

'value' => $newwidth,

);

} // foreach ( $multipliers as $multiplier )

if ( is_array( $newsources ) ) {

if ( function_exists( 'array_replace' ) ) { // PHP 5.3+, preferred

$sources = array_replace( $sources, $newsources );

} else { // For PHP 5.2 using WP shim function

$sources = array_replace_recursive( $sources, $newsources );

}

}

} // if ( isset( $image_meta['width'] ) && isset( $image_meta['file'] ) )

return $sources;

}

/**

public function filter_sizes( $sizes, $size ) {

if ( ! doing_filter( 'the_content' ) ){

return $sizes;

}

$content_width = Jetpack::get_content_width();

if ( ! $content_width ) {

$content_width = 1000;

}

if ( ( is_array( $size ) && $size[0] < $content_width ) ) {

return $sizes;

}

return sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $content_width );

}

/**

/**

protected static function validate_image_url( $url ) {

$parsed_url = @parse_url( $url );

if ( ! $parsed_url )

return false;

// Parse URL and ensure needed keys exist, since the array returned by `parse_url` only includes the URL components it finds.

$url_info = wp_parse_args( $parsed_url, array(

'scheme' => null,

'host' => null,

'port' => null,

'path' => null

) );

// Bail if scheme isn't http or port is set that isn't port 80

if (

( 'http' != $url_info['scheme'] || ! in_array( $url_info['port'], array( 80, null ) ) ) &&

/**

apply_filters( 'jetpack_photon_reject_https', false )

) {

return false;

}

// Bail if no host is found

if ( is_null( $url_info['host'] ) )

return false;

// Bail if the image alredy went through Photon

if ( preg_match( '#^i[\d]{1}.wp.com$#i', $url_info['host'] ) )

return false;

// Bail if no path is found

if ( is_null( $url_info['path'] ) )

return false;

// Ensure image extension is acceptable

if ( ! in_array( strtolower( pathinfo( $url_info['path'], PATHINFO_EXTENSION ) ), self::$extensions ) )

return false;

// If we got this far, we should have an acceptable image URL

// But let folks filter to decline if they prefer.

/**

return apply_filters( 'photon_validate_image_url', true, $url, $parsed_url );

}

/**

protected static function strip_image_dimensions_maybe( $src ){

$stripped_src = $src;

// Build URL, first removing WP's resized string so we pass the original image to Photon

if ( preg_match( '#(-\d+x\d+)\.(' . implode('|', self::$extensions ) . '){1}$#i', $src, $src_parts ) ) {

$stripped_src = str_replace( $src_parts[1], '', $src );

$upload_dir = wp_get_upload_dir();

// Extracts the file path to the image minus the base url

$file_path = substr( $stripped_src, strlen ( $upload_dir['baseurl'] ) );

if( file_exists( $upload_dir["basedir"] . $file_path ) )

$src = $stripped_src;

}

return $src;

}

/**

protected static function image_sizes() {

if ( null == self::$image_sizes ) {

global $_wp_additional_image_sizes;

// Populate an array matching the data structure of $_wp_additional_image_sizes so we have a consistent structure for image sizes

$images = array(

'thumb' => array(

'width' => intval( get_option( 'thumbnail_size_w' ) ),

'height' => intval( get_option( 'thumbnail_size_h' ) ),

'crop' => (bool) get_option( 'thumbnail_crop' )

),

'medium' => array(

'width' => intval( get_option( 'medium_size_w' ) ),

'height' => intval( get_option( 'medium_size_h' ) ),

'crop' => false

),

'large' => array(

'width' => intval( get_option( 'large_size_w' ) ),

'height' => intval( get_option( 'large_size_h' ) ),

'crop' => false

),

'full' => array(

'width' => null,

'height' => null,

'crop' => false

)

);

// Compatibility mapping as found in wp-includes/media.php

$images['thumbnail'] = $images['thumb'];

// Update class variable, merging in $_wp_additional_image_sizes if any are set

if ( is_array( $_wp_additional_image_sizes ) && ! empty( $_wp_additional_image_sizes ) )

self::$image_sizes = array_merge( $images, $_wp_additional_image_sizes );

else

self::$image_sizes = $images;

}

return is_array( self::$image_sizes ) ? self::$image_sizes : array();

}

/**

function filter_open_graph_tags( $tags, $parameters ) {

if ( empty( $tags['og:image'] ) ) {

return $tags;

}

$photon_args = array(

'fit' => sprintf( '%d,%d', 2 * $parameters['image_width'], 2 * $parameters['image_height'] ),

);

if ( is_array( $tags['og:image'] ) ) {

$images = array();

foreach ( $tags['og:image'] as $image ) {

$images[] = jetpack_photon_url( $image, $photon_args );

}

$tags['og:image'] = $images;

} else {

$tags['og:image'] = jetpack_photon_url( $tags['og:image'], $photon_args );

}

return $tags;

}

/**

public function action_wp_enqueue_scripts() {

wp_enqueue_script( 'jetpack-photon', plugins_url( 'modules/photon/photon.js', JETPACK__PLUGIN_FILE ), array( 'jquery' ), 20130122, true );

}