Jetpack_Photon::setup PHP Méthode

    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);
    }