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=> __( 'Drag and drop to reorder media files.' ),
// Upload.
'uploadFilesTitle' => __( 'Upload files' ),
'uploadImagesTitle' => __( 'Upload images' ),
// Library.
'mediaLibraryTitle' => __( 'Media Library' ),
'insertMediaTitle' => __( 'Add media' ),
'createNewGallery' => __( 'Create a new gallery' ),
'createNewPlaylist' => __( 'Create a new playlist' ),
'createNewVideoPlaylist' => __( 'Create a new video playlist' ),
'returnToLibrary' => __( '← Go to library' ),
'allMediaItems' => __( 'All media items' ),
'allDates' => __( 'All dates' ),
'noItemsFound' => __( 'No items found.' ),
'insertIntoPost' => $post_type_object->labels->insert_into_item,
'unattached' => _x( 'Unattached', 'media items' ),
'mine' => _x( 'Mine', 'media items' ),
'trash' => _x( 'Trash', 'noun' ),
'uploadedToThisPost' => $post_type_object->labels->uploaded_to_this_item,
'warnDelete' => __( "You are about to permanently delete this item from your site.\nThis action cannot be undone.\n 'Cancel' to stop, 'OK' to delete." ),
'warnBulkDelete' => __( "You are about to permanently delete these items from your site.\nThis action cannot be undone.\n 'Cancel' to stop, 'OK' to delete." ),
'warnBulkTrash' => __( "You are about to trash these items.\n 'Cancel' to stop, 'OK' to delete." ),
'bulkSelect' => __( 'Bulk select' ),
'trashSelected' => __( 'Move to Trash' ),
'restoreSelected' => __( 'Restore from Trash' ),
'deletePermanently' => __( 'Delete permanently' ),
'apply' => __( 'Apply' ),
'filterByDate' => __( 'Filter by date' ),
'filterByType' => __( 'Filter by type' ),
'searchLabel' => __( 'Search' ),
'searchMediaLabel' => __( 'Search media' ), // Backward compatibility pre-5.3.
'searchMediaPlaceholder' => __( 'Search media items...' ), // Placeholder (no ellipsis), backward compatibility pre-5.3.
/* translators: %d: Number of attachments found in a search. */
'mediaFound' => __( 'Number of media items found: %d' ),
'noMedia' => __( 'No media items found.' ),
'noMediaTryNewSearch' => __( 'No media items found. Try a different search.' ),
// Library Details.
'attachmentDetails' => __( 'Attachment details' ),
// From URL.
'insertFromUrlTitle' => __( 'Insert from URL' ),
// Featured Images.
'setFeaturedImageTitle' => $post_type_object->labels->featured_image,
'setFeaturedImage' => $post_type_object->labels->set_featured_image,
// Gallery.
'createGalleryTitle' => __( 'Create gallery' ),
'editGalleryTitle' => __( 'Edit gallery' ),
'cancelGalleryTitle' => __( '← Cancel gallery' ),
'insertGallery' => __( 'Insert gallery' ),
'updateGallery' => __( 'Update gallery' ),
'addToGallery' => __( 'Add to gallery' ),
'addToGalleryTitle' => __( 'Add to gallery' ),
'reverseOrder' => __( 'Reverse order' ),
// Edit Image.
'imageDetailsTitle' => __( 'Image details' ),
'imageReplaceTitle' => __( 'Replace image' ),
'imageDetailsCancel' => __( 'Cancel edit' ),
'editImage' => __( 'Edit image' ),
// Crop Image.
'chooseImage' => __( 'Choose image' ),
'selectAndCrop' => __( 'Select and crop' ),
'skipCropping' => __( 'Skip cropping' ),
'cropImage' => __( 'Crop image' ),
'cropYourImage' => __( 'Crop your image' ),
'cropping' => __( 'Cropping…' ),
/* translators: 1: Suggested width number, 2: Suggested height number. */
'suggestedDimensions' => __( 'Suggested image dimensions: %1$s by %2$s pixels.' ),
'cropError' => __( 'There has been an error cropping your image.' ),
// Edit Audio.
'audioDetailsTitle' => __( 'Audio details' ),
'audioReplaceTitle' => __( 'Replace audio' ),
'audioAddSourceTitle' => __( 'Add audio source' ),
'audioDetailsCancel' => __( 'Cancel edit' ),
// Edit Video.
'videoDetailsTitle' => __( 'Video details' ),
'videoReplaceTitle' => __( 'Replace video' ),
'videoAddSourceTitle' => __( 'Add video source' ),
'videoDetailsCancel' => __( 'Cancel edit' ),
'videoSelectPosterImageTitle' => __( 'Select poster image' ),
'videoAddTrackTitle' => __( 'Add subtitles' ),
// Playlist.
'playlistDragInfo' => __( 'Drag and drop to reorder tracks.' ),
'createPlaylistTitle' => __( 'Create audio playlist' ),
'editPlaylistTitle' => __( 'Edit audio playlist' ),
'cancelPlaylistTitle' => __( '← Cancel audio playlist' ),
'insertPlaylist' => __( 'Insert audio playlist' ),
'updatePlaylist' => __( 'Update audio playlist' ),
'addToPlaylist' => __( 'Add to audio playlist' ),
'addToPlaylistTitle' => __( 'Add to Audio Playlist' ),
// Video Playlist.
'videoPlaylistDragInfo' => __( 'Drag and drop to reorder videos.' ),
'createVideoPlaylistTitle' => __( 'Create video playlist' ),
'editVideoPlaylistTitle' => __( 'Edit video playlist' ),
'cancelVideoPlaylistTitle' => __( '← Cancel video playlist' ),
'insertVideoPlaylist' => __( 'Insert video playlist' ),
'updateVideoPlaylist' => __( 'Update video playlist' ),
'addToVideoPlaylist' => __( 'Add to video playlist' ),
'addToVideoPlaylistTitle' => __( 'Add to video Playlist' ),
// Headings.
'filterAttachments' => __( 'Filter media' ),
'attachmentsList' => __( 'Media list' ),
);
/**
* Filters the media view settings.
*
* @since 3.5.0
*
* @param array $settings List of media view settings.
* @param WP_Post $post Post object.
*/
$settings = apply_filters( 'media_view_settings', $settings, $post );
/**
* Filters the media view strings.
*
* @since 3.5.0
*
* @param string[] $strings Array of media view strings keyed by the name they'll be referenced by in JavaScript.
* @param WP_Post $post Post object.
*/
$strings = apply_filters( 'media_view_strings', $strings, $post );
$strings['settings'] = $settings;
// Ensure we enqueue media-editor first, that way media-views
// is registered internally before we try to localize it. See #24724.
wp_enqueue_script( 'media-editor' );
wp_localize_script( 'media-views', '_wpMediaViewsL10n', $strings );
wp_enqueue_script( 'media-audiovideo' );
wp_enqueue_style( 'media-views' );
if ( is_admin() ) {
wp_enqueue_script( 'mce-view' );
wp_enqueue_script( 'image-edit' );
}
wp_enqueue_style( 'imgareaselect' );
wp_plupload_default_settings();
require_once ABSPATH . WPINC . '/media-template.php';
add_action( 'admin_footer', 'wp_print_media_templates' );
add_action( 'wp_footer', 'wp_print_media_templates' );
add_action( 'customize_controls_print_footer_scripts', 'wp_print_media_templates' );
/**
* Fires at the conclusion of wp_enqueue_media().
*
* @since 3.5.0
*/
do_action( 'wp_enqueue_media' );
}
/**
* Retrieves media attached to the passed post.
*
* @since 3.6.0
*
* @param string $type Mime type.
* @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
* @return WP_Post[] Array of media attached to the given post.
*/
function get_attached_media( $type, $post = 0 ) {
$post = get_post( $post );
if ( ! $post ) {
return array();
}
$args = array(
'post_parent' => $post->ID,
'post_type' => 'attachment',
'post_mime_type' => $type,
'posts_per_page' => -1,
'orderby' => 'menu_order',
'order' => 'ASC',
);
/**
* Filters arguments used to retrieve media attached to the given post.
*
* @since 3.6.0
*
* @param array $args Post query arguments.
* @param string $type Mime type of the desired media.
* @param WP_Post $post Post object.
*/
$args = apply_filters( 'get_attached_media_args', $args, $type, $post );
$children = get_children( $args );
/**
* Filters the list of media attached to the given post.
*
* @since 3.6.0
*
* @param WP_Post[] $children Array of media attached to the given post.
* @param string $type Mime type of the media desired.
* @param WP_Post $post Post object.
*/
return (array) apply_filters( 'get_attached_media', $children, $type, $post );
}
/**
* Check the content HTML for a audio, video, object, embed, or iframe tags.
*
* @since 3.6.0
*
* @param string $content A string of HTML which might contain media elements.
* @param string[] $types An array of media types: 'audio', 'video', 'object', 'embed', or 'iframe'.
* @return string[] Array of found HTML media elements.
*/
function get_media_embedded_in_content( $content, $types = null ) {
$html = array();
/**
* Filters the embedded media types that are allowed to be returned from the content blob.
*
* @since 4.2.0
*
* @param string[] $allowed_media_types An array of allowed media types. Default media types are
* 'audio', 'video', 'object', 'embed', and 'iframe'.
*/
$allowed_media_types = apply_filters( 'media_embedded_in_content_allowed_types', array( 'audio', 'video', 'object', 'embed', 'iframe' ) );
if ( ! empty( $types ) ) {
if ( ! is_array( $types ) ) {
$types = array( $types );
}
$allowed_media_types = array_intersect( $allowed_media_types, $types );
}
$tags = implode( '|', $allowed_media_types );
if ( preg_match_all( '#<(?P' . $tags . ')[^<]*?(?:>[\s\S]*?<\/(?P=tag)>|\s*\/>)#', $content, $matches ) ) {
foreach ( $matches[0] as $match ) {
$html[] = $match;
}
}
return $html;
}
/**
* Retrieves galleries from the passed post's content.
*
* @since 3.6.0
*
* @param int|WP_Post $post Post ID or object.
* @param bool $html Optional. Whether to return HTML or data in the array. Default true.
* @return array A list of arrays, each containing gallery data and srcs parsed
* from the expanded shortcode.
*/
function get_post_galleries( $post, $html = true ) {
$post = get_post( $post );
if ( ! $post ) {
return array();
}
if ( ! has_shortcode( $post->post_content, 'gallery' ) && ! has_block( 'gallery', $post->post_content ) ) {
return array();
}
$galleries = array();
if ( preg_match_all( '/' . get_shortcode_regex() . '/s', $post->post_content, $matches, PREG_SET_ORDER ) ) {
foreach ( $matches as $shortcode ) {
if ( 'gallery' === $shortcode[2] ) {
$srcs = array();
$shortcode_attrs = shortcode_parse_atts( $shortcode[3] );
if ( ! is_array( $shortcode_attrs ) ) {
$shortcode_attrs = array();
}
// Specify the post ID of the gallery we're viewing if the shortcode doesn't reference another post already.
if ( ! isset( $shortcode_attrs['id'] ) ) {
$shortcode[3] .= ' id="' . (int) $post->ID . '"';
}
$gallery = do_shortcode_tag( $shortcode );
if ( $html ) {
$galleries[] = $gallery;
} else {
preg_match_all( '#src=([\'"])(.+?)\1#is', $gallery, $src, PREG_SET_ORDER );
if ( ! empty( $src ) ) {
foreach ( $src as $s ) {
$srcs[] = $s[2];
}
}
$galleries[] = array_merge(
$shortcode_attrs,
array(
'src' => array_values( array_unique( $srcs ) ),
)
);
}
}
}
}
if ( has_block( 'gallery', $post->post_content ) ) {
$post_blocks = parse_blocks( $post->post_content );
while ( $block = array_shift( $post_blocks ) ) {
$has_inner_blocks = ! empty( $block['innerBlocks'] );
// Skip blocks with no blockName and no innerHTML.
if ( ! $block['blockName'] ) {
continue;
}
// Skip non-Gallery blocks.
if ( 'core/gallery' !== $block['blockName'] ) {
// Move inner blocks into the root array before skipping.
if ( $has_inner_blocks ) {
array_push( $post_blocks, ...$block['innerBlocks'] );
}
continue;
}
// New Gallery block format as HTML.
if ( $has_inner_blocks && $html ) {
$block_html = wp_list_pluck( $block['innerBlocks'], 'innerHTML' );
$galleries[] = '' . implode( ' ', $block_html ) . '';
continue;
}
$srcs = array();
// New Gallery block format as an array.
if ( $has_inner_blocks ) {
$attrs = wp_list_pluck( $block['innerBlocks'], 'attrs' );
$ids = wp_list_pluck( $attrs, 'id' );
foreach ( $ids as $id ) {
$url = wp_get_attachment_url( $id );
if ( is_string( $url ) && ! in_array( $url, $srcs, true ) ) {
$srcs[] = $url;
}
}
$galleries[] = array(
'ids' => implode( ',', $ids ),
'src' => $srcs,
);
continue;
}
// Old Gallery block format as HTML.
if ( $html ) {
$galleries[] = $block['innerHTML'];
continue;
}
// Old Gallery block format as an array.
$ids = ! empty( $block['attrs']['ids'] ) ? $block['attrs']['ids'] : array();
// If present, use the image IDs from the JSON blob as canonical.
if ( ! empty( $ids ) ) {
foreach ( $ids as $id ) {
$url = wp_get_attachment_url( $id );
if ( is_string( $url ) && ! in_array( $url, $srcs, true ) ) {
$srcs[] = $url;
}
}
$galleries[] = array(
'ids' => implode( ',', $ids ),
'src' => $srcs,
);
continue;
}
// Otherwise, extract srcs from the innerHTML.
preg_match_all( '#src=([\'"])(.+?)\1#is', $block['innerHTML'], $found_srcs, PREG_SET_ORDER );
if ( ! empty( $found_srcs[0] ) ) {
foreach ( $found_srcs as $src ) {
if ( isset( $src[2] ) && ! in_array( $src[2], $srcs, true ) ) {
$srcs[] = $src[2];
}
}
}
$galleries[] = array( 'src' => $srcs );
}
}
/**
* Filters the list of all found galleries in the given post.
*
* @since 3.6.0
*
* @param array $galleries Associative array of all found post galleries.
* @param WP_Post $post Post object.
*/
return apply_filters( 'get_post_galleries', $galleries, $post );
}
/**
* Check a specified post's content for gallery and, if present, return the first
*
* @since 3.6.0
*
* @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
* @param bool $html Optional. Whether to return HTML or data. Default is true.
* @return string|array Gallery data and srcs parsed from the expanded shortcode.
*/
function get_post_gallery( $post = 0, $html = true ) {
$galleries = get_post_galleries( $post, $html );
$gallery = reset( $galleries );
/**
* Filters the first-found post gallery.
*
* @since 3.6.0
*
* @param array $gallery The first-found post gallery.
* @param int|WP_Post $post Post ID or object.
* @param array $galleries Associative array of all found post galleries.
*/
return apply_filters( 'get_post_gallery', $gallery, $post, $galleries );
}
/**
* Retrieve the image srcs from galleries from a post's content, if present
*
* @since 3.6.0
*
* @see get_post_galleries()
*
* @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
* @return array A list of lists, each containing image srcs parsed.
* from an expanded shortcode
*/
function get_post_galleries_images( $post = 0 ) {
$galleries = get_post_galleries( $post, false );
return wp_list_pluck( $galleries, 'src' );
}
/**
* Checks a post's content for galleries and return the image srcs for the first found gallery
*
* @since 3.6.0
*
* @see get_post_gallery()
*
* @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
* @return string[] A list of a gallery's image srcs in order.
*/
function get_post_gallery_images( $post = 0 ) {
$gallery = get_post_gallery( $post, false );
return empty( $gallery['src'] ) ? array() : $gallery['src'];
}
/**
* Maybe attempts to generate attachment metadata, if missing.
*
* @since 3.9.0
*
* @param WP_Post $attachment Attachment object.
*/
function wp_maybe_generate_attachment_metadata( $attachment ) {
if ( empty( $attachment ) || empty( $attachment->ID ) ) {
return;
}
$attachment_id = (int) $attachment->ID;
$file = get_attached_file( $attachment_id );
$meta = wp_get_attachment_metadata( $attachment_id );
if ( empty( $meta ) && file_exists( $file ) ) {
$_meta = get_post_meta( $attachment_id );
$_lock = 'wp_generating_att_' . $attachment_id;
if ( ! array_key_exists( '_wp_attachment_metadata', $_meta ) && ! get_transient( $_lock ) ) {
set_transient( $_lock, $file );
wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
delete_transient( $_lock );
}
}
}
/**
* Tries to convert an attachment URL into a post ID.
*
* @since 4.0.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $url The URL to resolve.
* @return int The found post ID, or 0 on failure.
*/
function attachment_url_to_postid( $url ) {
global $wpdb;
$dir = wp_get_upload_dir();
$path = $url;
$site_url = parse_url( $dir['url'] );
$image_path = parse_url( $path );
// Force the protocols to match if needed.
if ( isset( $image_path['scheme'] ) && ( $image_path['scheme'] !== $site_url['scheme'] ) ) {
$path = str_replace( $image_path['scheme'], $site_url['scheme'], $path );
}
if ( 0 === strpos( $path, $dir['baseurl'] . '/' ) ) {
$path = substr( $path, strlen( $dir['baseurl'] . '/' ) );
}
$sql = $wpdb->prepare(
"SELECT post_id, meta_value FROM $wpdb->postmeta WHERE meta_key = '_wp_attached_file' AND meta_value = %s",
$path
);
$results = $wpdb->get_results( $sql );
$post_id = null;
if ( $results ) {
// Use the first available result, but prefer a case-sensitive match, if exists.
$post_id = reset( $results )->post_id;
if ( count( $results ) > 1 ) {
foreach ( $results as $result ) {
if ( $path === $result->meta_value ) {
$post_id = $result->post_id;
break;
}
}
}
}
/**
* Filters an attachment ID found by URL.
*
* @since 4.2.0
*
* @param int|null $post_id The post_id (if any) found by the function.
* @param string $url The URL being looked up.
*/
return (int) apply_filters( 'attachment_url_to_postid', $post_id, $url );
}
/**
* Returns the URLs for CSS files used in an iframe-sandbox'd TinyMCE media view.
*
* @since 4.0.0
*
* @return string[] The relevant CSS file URLs.
*/
function wpview_media_sandbox_styles() {
$version = 'ver=' . get_bloginfo( 'version' );
$mediaelement = includes_url( "js/mediaelement/mediaelementplayer-legacy.min.css?$version" );
$wpmediaelement = includes_url( "js/mediaelement/wp-mediaelement.css?$version" );
return array( $mediaelement, $wpmediaelement );
}
/**
* Registers the personal data exporter for media.
*
* @param array[] $exporters An array of personal data exporters, keyed by their ID.
* @return array[] Updated array of personal data exporters.
*/
function wp_register_media_personal_data_exporter( $exporters ) {
$exporters['wordpress-media'] = array(
'exporter_friendly_name' => __( 'WordPress Media' ),
'callback' => 'wp_media_personal_data_exporter',
);
return $exporters;
}
/**
* Finds and exports attachments associated with an email address.
*
* @since 4.9.6
*
* @param string $email_address The attachment owner email address.
* @param int $page Attachment page.
* @return array An array of personal data.
*/
function wp_media_personal_data_exporter( $email_address, $page = 1 ) {
// Limit us to 50 attachments at a time to avoid timing out.
$number = 50;
$page = (int) $page;
$data_to_export = array();
$user = get_user_by( 'email', $email_address );
if ( false === $user ) {
return array(
'data' => $data_to_export,
'done' => true,
);
}
$post_query = new WP_Query(
array(
'author' => $user->ID,
'posts_per_page' => $number,
'paged' => $page,
'post_type' => 'attachment',
'post_status' => 'any',
'orderby' => 'ID',
'order' => 'ASC',
)
);
foreach ( (array) $post_query->posts as $post ) {
$attachment_url = wp_get_attachment_url( $post->ID );
if ( $attachment_url ) {
$post_data_to_export = array(
array(
'name' => __( 'URL' ),
'value' => $attachment_url,
),
);
$data_to_export[] = array(
'group_id' => 'media',
'group_label' => __( 'Media' ),
'group_description' => __( 'User’s media data.' ),
'item_id' => "post-{$post->ID}",
'data' => $post_data_to_export,
);
}
}
$done = $post_query->max_num_pages <= $page;
return array(
'data' => $data_to_export,
'done' => $done,
);
}
/**
* Add additional default image sub-sizes.
*
* These sizes are meant to enhance the way WordPress displays images on the front-end on larger,
* high-density devices. They make it possible to generate more suitable `srcset` and `sizes` attributes
* when the users upload large images.
*
* The sizes can be changed or removed by themes and plugins but that is not recommended.
* The size "names" reflect the image dimensions, so changing the sizes would be quite misleading.
*
* @since 5.3.0
* @access private
*/
function _wp_add_additional_image_sizes() {
// 2x medium_large size.
add_image_size( '1536x1536', 1536, 1536 );
// 2x large size.
add_image_size( '2048x2048', 2048, 2048 );
}
/**
* Callback to enable showing of the user error when uploading .heic images.
*
* @since 5.5.0
*
* @param array[] $plupload_settings The settings for Plupload.js.
* @return array[] Modified settings for Plupload.js.
*/
function wp_show_heic_upload_error( $plupload_settings ) {
$plupload_settings['heic_upload_error'] = true;
return $plupload_settings;
}
/**
* Allows PHP's getimagesize() to be debuggable when necessary.
*
* @since 5.7.0
* @since 5.8.0 Added support for WebP images.
*
* @param string $filename The file path.
* @param array $image_info Optional. Extended image information (passed by reference).
* @return array|false Array of image information or false on failure.
*/
function wp_getimagesize( $filename, array &$image_info = null ) {
// Don't silence errors when in debug mode, unless running unit tests.
if ( defined( 'WP_DEBUG' ) && WP_DEBUG
&& ! defined( 'WP_RUN_CORE_TESTS' )
) {
if ( 2 === func_num_args() ) {
$info = getimagesize( $filename, $image_info );
} else {
$info = getimagesize( $filename );
}
} else {
/*
* Silencing notice and warning is intentional.
*
* getimagesize() has a tendency to generate errors, such as
* "corrupt JPEG data: 7191 extraneous bytes before marker",
* even when it's able to provide image size information.
*
* See https://core.trac.wordpress.org/ticket/42480
*/
if ( 2 === func_num_args() ) {
// phpcs:ignore WordPress.PHP.NoSilencedErrors
$info = @getimagesize( $filename, $image_info );
} else {
// phpcs:ignore WordPress.PHP.NoSilencedErrors
$info = @getimagesize( $filename );
}
}
if ( false !== $info ) {
return $info;
}
// For PHP versions that don't support WebP images,
// extract the image size info from the file headers.
if ( 'image/webp' === wp_get_image_mime( $filename ) ) {
$webp_info = wp_get_webp_info( $filename );
$width = $webp_info['width'];
$height = $webp_info['height'];
// Mimic the native return format.
if ( $width && $height ) {
return array(
$width,
$height,
IMAGETYPE_WEBP,
sprintf(
'width="%d" height="%d"',
$width,
$height
),
'mime' => 'image/webp',
);
}
}
// The image could not be parsed.
return false;
}
/**
* Extracts meta information about a WebP file: width, height, and type.
*
* @since 5.8.0
*
* @param string $filename Path to a WebP file.
* @return array {
* An array of WebP image information.
*
* @type int|false $width Image width on success, false on failure.
* @type int|false $height Image height on success, false on failure.
* @type string|false $type The WebP type: one of 'lossy', 'lossless' or 'animated-alpha'.
* False on failure.
* }
*/
function wp_get_webp_info( $filename ) {
$width = false;
$height = false;
$type = false;
if ( 'image/webp' !== wp_get_image_mime( $filename ) ) {
return compact( 'width', 'height', 'type' );
}
try {
$handle = fopen( $filename, 'rb' );
if ( $handle ) {
$magic = fread( $handle, 40 );
fclose( $handle );
// Make sure we got enough bytes.
if ( strlen( $magic ) < 40 ) {
return compact( 'width', 'height', 'type' );
}
// The headers are a little different for each of the three formats.
// Header values based on WebP docs, see https://developers.google.com/speed/webp/docs/riff_container.
switch ( substr( $magic, 12, 4 ) ) {
// Lossy WebP.
case 'VP8 ':
$parts = unpack( 'v2', substr( $magic, 26, 4 ) );
$width = (int) ( $parts[1] & 0x3FFF );
$height = (int) ( $parts[2] & 0x3FFF );
$type = 'lossy';
break;
// Lossless WebP.
case 'VP8L':
$parts = unpack( 'C4', substr( $magic, 21, 4 ) );
$width = (int) ( $parts[1] | ( ( $parts[2] & 0x3F ) << 8 ) ) + 1;
$height = (int) ( ( ( $parts[2] & 0xC0 ) >> 6 ) | ( $parts[3] << 2 ) | ( ( $parts[4] & 0x03 ) << 10 ) ) + 1;
$type = 'lossless';
break;
// Animated/alpha WebP.
case 'VP8X':
// Pad 24-bit int.
$width = unpack( 'V', substr( $magic, 24, 3 ) . "\x00" );
$width = (int) ( $width[1] & 0xFFFFFF ) + 1;
// Pad 24-bit int.
$height = unpack( 'V', substr( $magic, 27, 3 ) . "\x00" );
$height = (int) ( $height[1] & 0xFFFFFF ) + 1;
$type = 'animated-alpha';
break;
}
}
} catch ( Exception $e ) {
}
return compact( 'width', 'height', 'type' );
}
/**
* Gets the default value to use for a `loading` attribute on an element.
*
* This function should only be called for a tag and context if lazy-loading is generally enabled.
*
* The function usually returns 'lazy', but uses certain heuristics to guess whether the current element is likely to
* appear above the fold, in which case it returns a boolean `false`, which will lead to the `loading` attribute being
* omitted on the element. The purpose of this refinement is to avoid lazy-loading elements that are within the initial
* viewport, which can have a negative performance impact.
*
* Under the hood, the function uses {@see wp_increase_content_media_count()} every time it is called for an element
* within the main content. If the element is the very first content element, the `loading` attribute will be omitted.
* This default threshold of 1 content element to omit the `loading` attribute for can be customized using the
* {@see 'wp_omit_loading_attr_threshold'} filter.
*
* @since 5.9.0
*
* @param string $context Context for the element for which the `loading` attribute value is requested.
* @return string|bool The default `loading` attribute value. Either 'lazy', 'eager', or a boolean `false`, to indicate
* that the `loading` attribute should be skipped.
*/
function wp_get_loading_attr_default( $context ) {
// Only elements with 'the_content' or 'the_post_thumbnail' context have special handling.
if ( 'the_content' !== $context && 'the_post_thumbnail' !== $context ) {
return 'lazy';
}
// Only elements within the main query loop have special handling.
if ( is_admin() || ! in_the_loop() || ! is_main_query() ) {
return 'lazy';
}
// Increase the counter since this is a main query content element.
$content_media_count = wp_increase_content_media_count();
// If the count so far is below the threshold, return `false` so that the `loading` attribute is omitted.
if ( $content_media_count <= wp_omit_loading_attr_threshold() ) {
return false;
}
// For elements after the threshold, lazy-load them as usual.
return 'lazy';
}
/**
* Gets the threshold for how many of the first content media elements to not lazy-load.
*
* This function runs the {@see 'wp_omit_loading_attr_threshold'} filter, which uses a default threshold value of 1.
* The filter is only run once per page load, unless the `$force` parameter is used.
*
* @since 5.9.0
*
* @param bool $force Optional. If set to true, the filter will be (re-)applied even if it already has been before.
* Default false.
* @return int The number of content media elements to not lazy-load.
*/
function wp_omit_loading_attr_threshold( $force = false ) {
static $omit_threshold;
// This function may be called multiple times. Run the filter only once per page load.
if ( ! isset( $omit_threshold ) || $force ) {
/**
* Filters the threshold for how many of the first content media elements to not lazy-load.
*
* For these first content media elements, the `loading` attribute will be omitted. By default, this is the case
* for only the very first content media element.
*
* @since 5.9.0
*
* @param int $omit_threshold The number of media elements where the `loading` attribute will not be added. Default 1.
*/
$omit_threshold = apply_filters( 'wp_omit_loading_attr_threshold', 1 );
}
return $omit_threshold;
}
/**
* Increases an internal content media count variable.
*
* @since 5.9.0
* @access private
*
* @param int $amount Optional. Amount to increase by. Default 1.
* @return int The latest content media count, after the increase.
*/
function wp_increase_content_media_count( $amount = 1 ) {
static $content_media_count = 0;
$content_media_count += $amount;
return $content_media_count;
}