--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/include/mupdf/fitz/deskew.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,46 @@
+// Copyright (C) 2004-2024 Artifex Software, Inc.
+//
+// This file is part of MuPDF.
+//
+// MuPDF 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.
+//
+// MuPDF 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 MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
+//
+// Alternative licensing terms are available from the licensor.
+// For commercial licensing, see <https://www.artifex.com/> or contact
+// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
+// CA 94129, USA, for further information.
+
+#ifndef MUPDF_FITZ_DESKEW_H
+#define MUPDF_FITZ_DESKEW_H
+
+#include "mupdf/fitz/system.h"
+#include "mupdf/fitz/context.h"
+
+enum
+{
+	FZ_DESKEW_BORDER_INCREASE = 0,
+	FZ_DESKEW_BORDER_MAINTAIN = 1,
+	FZ_DESKEW_BORDER_DECREASE = 2
+};
+
+fz_pixmap *fz_deskew_pixmap(fz_context *ctx,
+			fz_pixmap *src,
+			double degrees,
+			int border);
+
+/* Skew detection */
+
+double fz_detect_skew(fz_context *ctx, fz_pixmap *pixmap);
+
+
+#endif /* MUPDF_FITZ_DESKEW_H */