1 files changed, 47 insertions, 0 deletions
diff --git a/apps/testing/lib/Conversion/ConversionProvider.php b/apps/testing/lib/Conversion/ConversionProvider.php
new file mode 100644
index 00000000000..b8d93428694
--- /dev/null
+++ b/apps/testing/lib/Conversion/ConversionProvider.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Testing\Conversion;
+
+use OCP\Files\Conversion\ConversionMimeProvider;
+use OCP\Files\Conversion\IConversionProvider;
+use OCP\Files\File;
+use OCP\IL10N;
+
+class ConversionProvider implements IConversionProvider {
+	public function __construct(
+		private IL10N $l10n,
+	) {
+	}
+
+	public function getSupportedMimeTypes(): array {
+		return [
+			new ConversionMimeProvider('image/jpeg', 'image/png', 'png', $this->l10n->t('Image (.png)')),
+			new ConversionMimeProvider('image/jpeg', 'image/gif', 'gif', $this->l10n->t('Image (.gif)')),
+		];
+	}
+
+	public function convertFile(File $file, string $targetMimeType): mixed {
+		$image = imagecreatefromstring($file->getContent());
+		imagepalettetotruecolor($image);
+
+		// Start output buffering
+		ob_start();
+
+		// Convert the image to the target format
+		if ($targetMimeType === 'image/gif') {
+			imagegif($image);
+		} else {
+			imagepng($image);
+		}
+
+		// End and return the output buffer
+		return ob_get_clean();
+	}
+}