--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/leptonica/src/ccbord.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,62 @@
+/*====================================================================*
+ -  Copyright (C) 2001 Leptonica.  All rights reserved.
+ -
+ -  Redistribution and use in source and binary forms, with or without
+ -  modification, are permitted provided that the following conditions
+ -  are met:
+ -  1. Redistributions of source code must retain the above copyright
+ -     notice, this list of conditions and the following disclaimer.
+ -  2. Redistributions in binary form must reproduce the above
+ -     copyright notice, this list of conditions and the following
+ -     disclaimer in the documentation and/or other materials
+ -     provided with the distribution.
+ -
+ -  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ -  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ -  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ -  A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ANY
+ -  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ -  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ -  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ -  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ -  OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ -  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ -  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *====================================================================*/
+
+#ifndef  LEPTONICA_CCBORD_H
+#define  LEPTONICA_CCBORD_H
+
+/*!
+ * \file ccbord.h
+ *
+ * <pre>
+ *
+ *    This is the public interface for representing all foreground pixels
+ *    in an image by the border pixels of connected components.  It contains
+ *    typedefs for data structures and enums for function inputs.
+ * </pre>
+ */
+
+/*! A single CCBord for a connected component */
+typedef struct CCBord CCBORD;
+
+/*! Array of CCBord */
+typedef struct CCBorda CCBORDA;
+
+    /*! Use in ccbaStepChainsToPixCoords() */
+/*! CCB Coords */
+enum {
+      CCB_LOCAL_COORDS = 1,
+      CCB_GLOBAL_COORDS = 2
+};
+
+    /*! Use in ccbaGenerateSPGlobalLocs() */
+/*! CCB Points */
+enum {
+      CCB_SAVE_ALL_PTS = 1,
+      CCB_SAVE_TURNING_PTS = 2
+};
+
+#endif  /* LEPTONICA_CCBORD_H */
+