Add support for webp

lib/composer/composer/autoload_classmap.php

@@ -1253,6 +1253,7 @@
     'OC\\Preview\\TXT' => $baseDir . '/lib/private/Preview/TXT.php',
     'OC\\Preview\\Watcher' => $baseDir . '/lib/private/Preview/Watcher.php',
     'OC\\Preview\\WatcherConnector' => $baseDir . '/lib/private/Preview/WatcherConnector.php',
+    'OC\\Preview\\WebP' => $baseDir . '/lib/private/Preview/WebP.php',
     'OC\\Preview\\XBitmap' => $baseDir . '/lib/private/Preview/XBitmap.php',
     'OC\\RedisFactory' => $baseDir . '/lib/private/RedisFactory.php',
     'OC\\Remote\\Api\\ApiBase' => $baseDir . '/lib/private/Remote/Api/ApiBase.php',

lib/composer/composer/autoload_static.php

@@ -1282,6 +1282,7 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OC\\Preview\\TXT' => __DIR__ . '/../../..' . '/lib/private/Preview/TXT.php',
         'OC\\Preview\\Watcher' => __DIR__ . '/../../..' . '/lib/private/Preview/Watcher.php',
         'OC\\Preview\\WatcherConnector' => __DIR__ . '/../../..' . '/lib/private/Preview/WatcherConnector.php',
+        'OC\\Preview\\WebP' => __DIR__ . '/../../..' . '/lib/private/Preview/WebP.php',
         'OC\\Preview\\XBitmap' => __DIR__ . '/../../..' . '/lib/private/Preview/XBitmap.php',
         'OC\\RedisFactory' => __DIR__ . '/../../..' . '/lib/private/RedisFactory.php',
         'OC\\Remote\\Api\\ApiBase' => __DIR__ . '/../../..' . '/lib/private/Remote/Api/ApiBase.php',

lib/private/Preview/WebP.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2018 Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @author Roeland Jago Douma <roeland@famdouma.nl>
+ * @author John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OC\Preview;
+
+use OCP\Files\FileInfo;
+
+class WebP extends Image {
+	/**
+	 * {@inheritDoc}
+	 */
+	public function getMimeType(): string {
+		return '/image\/webp/';
+	}
+
+	public function isAvailable(FileInfo $file): bool {
+		return (bool)(imagetypes() && IMG_WEBP);
+	}
+}

lib/private/PreviewManager.php

@@ -58,7 +58,7 @@ class PreviewManager implements IPreview {
 
 	/** @var Generator */
 	private $generator;
-	
+
 	/** @var GeneratorHelper */
 	private $helper;
 
@@ -314,6 +314,7 @@ protected function getEnabledDefaultProvider() {
 			Preview\HEIC::class,
 			Preview\XBitmap::class,
 			Preview\Krita::class,
+			Preview\WebP::class,
 		];
 
 		$this->defaultProviders = $this->config->getSystemValue('enabledPreviewProviders', array_merge([
@@ -360,6 +361,7 @@ protected function registerCoreProviders() {
 		$this->registerCoreProvider(Preview\GIF::class, '/image\/gif/');
 		$this->registerCoreProvider(Preview\BMP::class, '/image\/bmp/');
 		$this->registerCoreProvider(Preview\XBitmap::class, '/image\/x-xbitmap/');
+		$this->registerCoreProvider(Preview\WebP::class, '/image\/webp/');
 		$this->registerCoreProvider(Preview\Krita::class, '/application\/x-krita/');
 		$this->registerCoreProvider(Preview\MP3::class, '/audio\/mpeg/');
 		$this->registerCoreProvider(Preview\OpenDocument::class, '/application\/vnd.oasis.opendocument.*/');

lib/private/legacy/OC_Image.php

@@ -555,7 +555,7 @@ public function loadFromFileHandle($handle) {
 	 */
 	public function loadFromFile($imagePath = false) {
 		// exif_imagetype throws "read error!" if file is less than 12 byte
-		if (!@is_file($imagePath) || !file_exists($imagePath) || filesize($imagePath) < 12 || !is_readable($imagePath)) {
+		if (is_bool($imagePath) || !@is_file($imagePath) || !file_exists($imagePath) || filesize($imagePath) < 12 || !is_readable($imagePath)) {
 			return false;
 		}
 		$iType = exif_imagetype($imagePath);
@@ -608,6 +608,13 @@ public function loadFromFile($imagePath = false) {
 			case IMAGETYPE_BMP:
 				$this->resource = $this->imagecreatefrombmp($imagePath);
 				break;
+			case IMAGETYPE_WEBP:
+				if (imagetypes() & IMG_WEBP) {
+					$this->resource = @imagecreatefromwebp($imagePath);
+				} else {
+					$this->logger->debug('OC_Image->loadFromFile, webp images not supported: ' . $imagePath, ['app' => 'core']);
+				}
+				break;
 			/*
 			case IMAGETYPE_TIFF_II: // (intel byte order)
 				break;