[gf] Register gf services.

include/freetype/internal/ftserv.h

@@ -510,6 +510,7 @@ FT_BEGIN_HEADER
 #define FT_SERVICE_TRUETYPE_GLYF_H      <freetype/internal/services/svttglyf.h>
 #define FT_SERVICE_TT_CMAP_H            <freetype/internal/services/svttcmap.h>
 #define FT_SERVICE_WINFNT_H             <freetype/internal/services/svwinfnt.h>
+#define FT_SERVICE_GF_H                 <freetype/internal/services/svgf.h>
 
  /* */
 

include/freetype/internal/services/svfntfmt.h

@@ -42,6 +42,7 @@ FT_BEGIN_HEADER
 #define FT_FONT_FORMAT_CFF       "CFF"
 #define FT_FONT_FORMAT_PFR       "PFR"
 #define FT_FONT_FORMAT_WINFNT    "Windows FNT"
+#define FT_FONT_FORMAT_GF        "GF"
 
   /* */
 

include/freetype/internal/services/svgf.h

@@ -0,0 +1,40 @@
+/****************************************************************************
+ *
+ * svgf.h
+ *
+ *   The FreeType GF services (specification).
+ *
+ * Copyright 2003-2018 by
+ * David Turner, Robert Wilhelm, and Werner Lemberg.
+ *
+ * This file is part of the FreeType project, and may only be used,
+ * modified, and distributed under the terms of the FreeType project
+ * license, LICENSE.TXT.  By continuing to use, modify, or distribute
+ * this file you indicate that you have read the license and
+ * understand and accept it fully.
+ *
+ */
+
+
+#ifndef SVGF_H_
+#define SVGF_H_
+
+
+#include FT_INTERNAL_SERVICE_H
+
+
+FT_BEGIN_HEADER
+
+
+#define FT_SERVICE_ID_GF  "gf"
+
+  /* */
+
+
+FT_END_HEADER
+
+
+#endif /* SVBDF_H_ */
+
+
+/* END */