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diff --git a/libgimpbase/gimpparasiteio.h b/libgimpbase/gimpparasiteio.h
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+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * gimpparasiteio.h
+ * Copyright (C) 1999 Tor Lillqvist <tml@iki.fi>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_PARASITE_IO_H__
+#define __GIMP_PARASITE_IO_H__
+
+G_BEGIN_DECLS
+
+/* For information look into the C source or the html documentation */
+
+
+/*  Data structures for various standard parasites used by plug-ins and
+ *  the GIMP core, and functions to build and parse their string
+ *  representations.
+ */
+
+/*
+ *  Pixmap brush pipes.
+ */
+
+#define GIMP_PIXPIPE_MAXDIM 4
+
+typedef struct _GimpPixPipeParams GimpPixPipeParams;
+
+/**
+ * GimpPixPipeParams:
+ * @step:                  Step
+ * @ncells:                Number of cells
+ * @dim:                   Dimension
+ * @cols:                  Columns
+ * @rows:                  Rows
+ * @cellwidth:             Cell width
+ * @cellheight:            Cell height
+ * @placement:             Placement
+ * @free_placement_string: Unused, ignore
+ * @rank:                  Rank
+ * @selection:             Selection
+ * @free_selection_string: Unused, ignore
+ *
+ * PLease somebody help documenting this.
+ **/
+struct _GimpPixPipeParams
+{
+  gint      step;
+  gint      ncells;
+  gint      dim;
+  gint      cols;
+  gint      rows;
+  gint      cellwidth;
+  gint      cellheight;
+  gchar    *placement;
+  gboolean  free_placement_string;
+  gint      rank[GIMP_PIXPIPE_MAXDIM];
+  gchar    *selection[GIMP_PIXPIPE_MAXDIM];
+  /* this flag is now useless. All selection strings are allocated. */
+  gboolean  free_selection_string;
+};
+
+/* Initialize with dummy values */
+void    gimp_pixpipe_params_init  (GimpPixPipeParams *params);
+
+/* Parse a string into a GimpPixPipeParams */
+void    gimp_pixpipe_params_parse (const gchar       *parameters,
+                                   GimpPixPipeParams *params);
+
+/* Build a string representation of GimpPixPipeParams */
+gchar * gimp_pixpipe_params_build (GimpPixPipeParams *params) G_GNUC_MALLOC;
+
+/* Free the internal values. It does not free the struct itself. */
+void    gimp_pixpipe_params_free  (GimpPixPipeParams *params);
+
+G_END_DECLS
+
+#endif /* __GIMP_PARASITE_IO_H__ */