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diff --git a/modules/freetype2/include/freetype/internal/services/svttcmap.h b/modules/freetype2/include/freetype/internal/services/svttcmap.h
new file mode 100644
index 0000000000..5f9eb02d66
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+++ b/modules/freetype2/include/freetype/internal/services/svttcmap.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+ *
+ * svttcmap.h
+ *
+ *   The FreeType TrueType/sfnt cmap extra information service.
+ *
+ * Copyright (C) 2003-2023 by
+ * Masatake YAMATO, Redhat K.K.,
+ * 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.
+ *
+ */
+
+/* Development of this service is support of
+   Information-technology Promotion Agency, Japan. */
+
+#ifndef SVTTCMAP_H_
+#define SVTTCMAP_H_
+
+#include <freetype/internal/ftserv.h>
+#include <freetype/tttables.h>
+
+
+FT_BEGIN_HEADER
+
+
+#define FT_SERVICE_ID_TT_CMAP  "tt-cmaps"
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_CMapInfo
+   *
+   * @description:
+   *   A structure used to store TrueType/sfnt specific cmap information
+   *   which is not covered by the generic @FT_CharMap structure.  This
+   *   structure can be accessed with the @FT_Get_TT_CMap_Info function.
+   *
+   * @fields:
+   *   language ::
+   *     The language ID used in Mac fonts.  Definitions of values are in
+   *     `ttnameid.h`.
+   *
+   *   format ::
+   *     The cmap format.  OpenType 1.6 defines the formats 0 (byte encoding
+   *     table), 2~(high-byte mapping through table), 4~(segment mapping to
+   *     delta values), 6~(trimmed table mapping), 8~(mixed 16-bit and 32-bit
+   *     coverage), 10~(trimmed array), 12~(segmented coverage), 13~(last
+   *     resort font), and 14 (Unicode Variation Sequences).
+   */
+  typedef struct  TT_CMapInfo_
+  {
+    FT_ULong  language;
+    FT_Long   format;
+
+  } TT_CMapInfo;
+
+
+  typedef FT_Error
+  (*TT_CMap_Info_GetFunc)( FT_CharMap    charmap,
+                           TT_CMapInfo  *cmap_info );
+
+
+  FT_DEFINE_SERVICE( TTCMaps )
+  {
+    TT_CMap_Info_GetFunc  get_cmap_info;
+  };
+
+
+#define FT_DEFINE_SERVICE_TTCMAPSREC( class_, get_cmap_info_ )  \
+  static const FT_Service_TTCMapsRec  class_ =                  \
+  {                                                             \
+    get_cmap_info_                                              \
+  };
+
+  /* */
+
+
+FT_END_HEADER
+
+#endif /* SVTTCMAP_H_ */
+
+
+/* END */