Changeset 50810 for trunk/src/wp-includes/functions.php

Timestamp:

05/04/2021 02:43:36 PM (3 years ago)

Author:

adamsilverstein

Message:

Images: enable WebP support.

Add support for uploading, editing and saving WebP images when supported by the server.

Add 'image/webp' to supported mime types. Correctly identify WebP images and sizes even when PHP doesn't support WebP. Resize uploaded WebP files (when supported) and use for front end markup.

Props markoheijne, blobfolio, Clorith, joemcgill, atjn, desrosj, spacedmonkey, marylauc, mikeschroder, hellofromtonya, flixos90.
Fixes #35725.

File:

• trunk/src/wp-includes/functions.php (modified) (4 diffs)

trunk/src/wp-includes/functions.php

@@ -2887 +2887 @@
                     'image/bmp'  => 'bmp',
                     'image/tiff' => 'tif',
+                    'image/webp' => 'webp',
                 )
             );
@@ -3064 +3065 @@
             $mime = false;
         }
+
+        if ( false !== $mime ) {
+            return $mime;
+        }
+
+        $handle = fopen( $file, 'rb' );
+        if ( false === $handle ) {
+            return false;
+        }
+
+        $magic = fread( $handle, 12 );
+        if ( false === $magic ) {
+            return false;
+        }
+
+        // Add WebP fallback detection when image library doesn't support WebP.
+        // Note: detection values come from LibWebP, see
+        // https://github.com/webmproject/libwebp/blob/master/imageio/image_dec.c#L30
+        $magic = bin2hex( $magic );
+        if (
+            // RIFF.
+            ( 0 === strpos( $magic, '52494646' ) ) &&
+            // WEBP.
+            ( 16 === strpos( $magic, '57454250' ) )
+        ) {
+            $mime = 'image/webp';
+        }
+
+        fclose( $handle );
     } catch ( Exception $e ) {
         $mime = false;
@@ -3102 +3132 @@
             'bmp'                          => 'image/bmp',
             'tiff|tif'                     => 'image/tiff',
+            'webp'                         => 'image/webp',
             'ico'                          => 'image/x-icon',
             'heic'                         => 'image/heic',
@@ -3223 +3254 @@
         'ext2type',
         array(
-            'image'       => array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'bmp', 'tif', 'tiff', 'ico', 'heic' ),
+            'image'       => array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'bmp', 'tif', 'tiff', 'ico', 'heic', 'webp' ),
             'audio'       => array( 'aac', 'ac3', 'aif', 'aiff', 'flac', 'm3a', 'm4a', 'm4b', 'mka', 'mp1', 'mp2', 'mp3', 'ogg', 'oga', 'ram', 'wav', 'wma' ),
             'video'       => array( '3g2', '3gp', '3gpp', 'asf', 'avi', 'divx', 'dv', 'flv', 'm4v', 'mkv', 'mov', 'mp4', 'mpeg', 'mpg', 'mpv', 'ogm', 'ogv', 'qt', 'rm', 'vob', 'wmv' ),