1 files changed, 65 insertions, 0 deletions
diff --git a/lib/private/Preview/MP3.php b/lib/private/Preview/MP3.php
new file mode 100644
index 00000000000..add0028738e
--- /dev/null
+++ b/lib/private/Preview/MP3.php
@@ -0,0 +1,65 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+namespace OC\Preview;
+
+use OCP\Files\File;
+use OCP\IImage;
+use OCP\Server;
+use Psr\Log\LoggerInterface;
+use wapmorgan\Mp3Info\Mp3Info;
+use function OCP\Log\logger;
+
+class MP3 extends ProviderV2 {
+	/**
+	 * {@inheritDoc}
+	 */
+	public function getMimeType(): string {
+		return '/audio\/mpeg/';
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage {
+		$tmpPath = $this->getLocalFile($file);
+		if ($tmpPath === false) {
+			Server::get(LoggerInterface::class)->error(
+				'Failed to get local file to generate thumbnail for: ' . $file->getPath(),
+				['app' => 'core']
+			);
+			return null;
+		}
+
+		try {
+			$audio = new Mp3Info($tmpPath, true);
+			/** @var string|null|false $picture */
+			$picture = $audio->getCover();
+		} catch (\Throwable $e) {
+			logger('core')->info('Error while getting cover from mp3 file: ' . $e->getMessage(), [
+				'fileId' => $file->getId(),
+				'filePath' => $file->getPath(),
+			]);
+			return null;
+		} finally {
+			$this->cleanTmpFiles();
+		}
+
+		if (is_string($picture)) {
+			$image = new \OCP\Image();
+			$image->loadFromData($picture);
+
+			if ($image->valid()) {
+				$image->scaleDownToFit($maxX, $maxY);
+
+				return $image;
+			}
+		}
+
+		return null;
+	}
+}