1 files changed, 63 insertions, 0 deletions
diff --git a/libgimpcolor/gimpbilinear.h b/libgimpcolor/gimpbilinear.h
new file mode 100644
index 0000000..d56007c
--- /dev/null
+++ b/libgimpcolor/gimpbilinear.h
@@ -0,0 +1,63 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * 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
+ * Library 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/>.
+ */
+
+#if !defined (__GIMP_COLOR_H_INSIDE__) && !defined (GIMP_COLOR_COMPILATION)
+#error "Only <libgimpcolor/gimpcolor.h> can be included directly."
+#endif
+
+#ifndef __GIMP_BILINEAR_H__
+#define __GIMP_BILINEAR_H__
+
+G_BEGIN_DECLS
+
+/* For information look into the C source or the html documentation */
+
+
+/*  bilinear interpolation functions taken from LibGCK  */
+
+
+gdouble   gimp_bilinear          (gdouble    x,
+                                  gdouble    y,
+                                  gdouble   *values);
+guchar    gimp_bilinear_8        (gdouble    x,
+                                  gdouble    y,
+                                  guchar    *values);
+guint16   gimp_bilinear_16       (gdouble    x,
+                                  gdouble    y,
+                                  guint16   *values);
+guint32   gimp_bilinear_32       (gdouble    x,
+                                  gdouble    y,
+                                  guint32   *values);
+GimpRGB   gimp_bilinear_rgb      (gdouble    x,
+                                  gdouble    y,
+                                  GimpRGB   *values);
+GimpRGB   gimp_bilinear_rgba     (gdouble    x,
+                                  gdouble    y,
+                                  GimpRGB   *values);
+
+GIMP_DEPRECATED
+void      gimp_bilinear_pixels_8 (guchar    *dest,
+                                  gdouble    x,
+                                  gdouble    y,
+                                  guint      bpp,
+                                  gboolean   has_alpha,
+                                  guchar   **values);
+
+G_END_DECLS
+
+#endif  /* __GIMP_BILINEAR_H__ */