Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1786 insertions, 0 deletions

diff --git a/modules/freetype2/include/freetype/internal/tttypes.h b/modules/freetype2/include/freetype/internal/tttypes.h
new file mode 100644
index 0000000000..3b521924ca
--- /dev/null
+++ b/modules/freetype2/include/freetype/internal/tttypes.h
@@ -0,0 +1,1786 @@
+/****************************************************************************
+ *
+ * tttypes.h
+ *
+ *   Basic SFNT/TrueType type definitions and interface (specification
+ *   only).
+ *
+ * Copyright (C) 1996-2023 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 TTTYPES_H_
+#define TTTYPES_H_
+
+
+#include <freetype/tttables.h>
+#include <freetype/internal/ftobjs.h>
+#include <freetype/ftcolor.h>
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include <freetype/ftmm.h>
+#endif
+
+
+FT_BEGIN_HEADER
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /***             REQUIRED TRUETYPE/OPENTYPE TABLES DEFINITIONS         ***/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TTC_HeaderRec
+   *
+   * @description:
+   *   TrueType collection header.  This table contains the offsets of the
+   *   font headers of each distinct TrueType face in the file.
+   *
+   * @fields:
+   *   tag ::
+   *     Must be 'ttc~' to indicate a TrueType collection.
+   *
+   *   version ::
+   *     The version number.
+   *
+   *   count ::
+   *     The number of faces in the collection.  The specification says this
+   *     should be an unsigned long, but we use a signed long since we need
+   *     the value -1 for specific purposes.
+   *
+   *   offsets ::
+   *     The offsets of the font headers, one per face.
+   */
+  typedef struct  TTC_HeaderRec_
+  {
+    FT_ULong   tag;
+    FT_Fixed   version;
+    FT_Long    count;
+    FT_ULong*  offsets;
+
+  } TTC_HeaderRec;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   SFNT_HeaderRec
+   *
+   * @description:
+   *   SFNT file format header.
+   *
+   * @fields:
+   *   format_tag ::
+   *     The font format tag.
+   *
+   *   num_tables ::
+   *     The number of tables in file.
+   *
+   *   search_range ::
+   *     Must be '16 * (max power of 2 <= num_tables)'.
+   *
+   *   entry_selector ::
+   *     Must be log2 of 'search_range / 16'.
+   *
+   *   range_shift ::
+   *     Must be 'num_tables * 16 - search_range'.
+   */
+  typedef struct  SFNT_HeaderRec_
+  {
+    FT_ULong   format_tag;
+    FT_UShort  num_tables;
+    FT_UShort  search_range;
+    FT_UShort  entry_selector;
+    FT_UShort  range_shift;
+
+    FT_ULong   offset;  /* not in file */
+
+  } SFNT_HeaderRec, *SFNT_Header;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_TableRec
+   *
+   * @description:
+   *   This structure describes a given table of a TrueType font.
+   *
+   * @fields:
+   *   Tag ::
+   *     A four-bytes tag describing the table.
+   *
+   *   CheckSum ::
+   *     The table checksum.  This value can be ignored.
+   *
+   *   Offset ::
+   *     The offset of the table from the start of the TrueType font in its
+   *     resource.
+   *
+   *   Length ::
+   *     The table length (in bytes).
+   */
+  typedef struct  TT_TableRec_
+  {
+    FT_ULong  Tag;        /*        table type */
+    FT_ULong  CheckSum;   /*    table checksum */
+    FT_ULong  Offset;     /* table file offset */
+    FT_ULong  Length;     /*      table length */
+
+  } TT_TableRec, *TT_Table;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_LongMetricsRec
+   *
+   * @description:
+   *   A structure modeling the long metrics of the 'hmtx' and 'vmtx'
+   *   TrueType tables.  The values are expressed in font units.
+   *
+   * @fields:
+   *   advance ::
+   *     The advance width or height for the glyph.
+   *
+   *   bearing ::
+   *     The left-side or top-side bearing for the glyph.
+   */
+  typedef struct  TT_LongMetricsRec_
+  {
+    FT_UShort  advance;
+    FT_Short   bearing;
+
+  } TT_LongMetricsRec, *TT_LongMetrics;
+
+
+  /**************************************************************************
+   *
+   * @type:
+   *   TT_ShortMetrics
+   *
+   * @description:
+   *   A simple type to model the short metrics of the 'hmtx' and 'vmtx'
+   *   tables.
+   */
+  typedef FT_Short  TT_ShortMetrics;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_NameRec
+   *
+   * @description:
+   *   A structure modeling TrueType name records.  Name records are used to
+   *   store important strings like family name, style name, copyright,
+   *   etc. in _localized_ versions (i.e., language, encoding, etc).
+   *
+   * @fields:
+   *   platformID ::
+   *     The ID of the name's encoding platform.
+   *
+   *   encodingID ::
+   *     The platform-specific ID for the name's encoding.
+   *
+   *   languageID ::
+   *     The platform-specific ID for the name's language.
+   *
+   *   nameID ::
+   *     The ID specifying what kind of name this is.
+   *
+   *   stringLength ::
+   *     The length of the string in bytes.
+   *
+   *   stringOffset ::
+   *     The offset to the string in the 'name' table.
+   *
+   *   string ::
+   *     A pointer to the string's bytes.  Note that these are usually UTF-16
+   *     encoded characters.
+   */
+  typedef struct  TT_NameRec_
+  {
+    FT_UShort  platformID;
+    FT_UShort  encodingID;
+    FT_UShort  languageID;
+    FT_UShort  nameID;
+    FT_UShort  stringLength;
+    FT_ULong   stringOffset;
+
+    /* this last field is not defined in the spec */
+    /* but used by the FreeType engine            */
+
+    FT_Byte*  string;
+
+  } TT_NameRec, *TT_Name;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_LangTagRec
+   *
+   * @description:
+   *   A structure modeling language tag records in SFNT 'name' tables,
+   *   introduced in OpenType version 1.6.
+   *
+   * @fields:
+   *   stringLength ::
+   *     The length of the string in bytes.
+   *
+   *   stringOffset ::
+   *     The offset to the string in the 'name' table.
+   *
+   *   string ::
+   *     A pointer to the string's bytes.  Note that these are UTF-16BE
+   *     encoded characters.
+   */
+  typedef struct TT_LangTagRec_
+  {
+    FT_UShort  stringLength;
+    FT_ULong   stringOffset;
+
+    /* this last field is not defined in the spec */
+    /* but used by the FreeType engine            */
+
+    FT_Byte*  string;
+
+  } TT_LangTagRec, *TT_LangTag;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_NameTableRec
+   *
+   * @description:
+   *   A structure modeling the TrueType name table.
+   *
+   * @fields:
+   *   format ::
+   *     The format of the name table.
+   *
+   *   numNameRecords ::
+   *     The number of names in table.
+   *
+   *   storageOffset ::
+   *     The offset of the name table in the 'name' TrueType table.
+   *
+   *   names ::
+   *     An array of name records.
+   *
+   *   numLangTagRecords ::
+   *     The number of language tags in table.
+   *
+   *   langTags ::
+   *     An array of language tag records.
+   *
+   *   stream ::
+   *     The file's input stream.
+   */
+  typedef struct  TT_NameTableRec_
+  {
+    FT_UShort       format;
+    FT_UInt         numNameRecords;
+    FT_UInt         storageOffset;
+    TT_NameRec*     names;
+    FT_UInt         numLangTagRecords;
+    TT_LangTagRec*  langTags;
+    FT_Stream       stream;
+
+  } TT_NameTableRec, *TT_NameTable;
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /***             OPTIONAL TRUETYPE/OPENTYPE TABLES DEFINITIONS         ***/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_GaspRangeRec
+   *
+   * @description:
+   *   A tiny structure used to model a gasp range according to the TrueType
+   *   specification.
+   *
+   * @fields:
+   *   maxPPEM ::
+   *     The maximum ppem value to which `gaspFlag` applies.
+   *
+   *   gaspFlag ::
+   *     A flag describing the grid-fitting and anti-aliasing modes to be
+   *     used.
+   */
+  typedef struct  TT_GaspRangeRec_
+  {
+    FT_UShort  maxPPEM;
+    FT_UShort  gaspFlag;
+
+  } TT_GaspRangeRec, *TT_GaspRange;
+
+
+#define TT_GASP_GRIDFIT  0x01
+#define TT_GASP_DOGRAY   0x02
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_GaspRec
+   *
+   * @description:
+   *   A structure modeling the TrueType 'gasp' table used to specify
+   *   grid-fitting and anti-aliasing behaviour.
+   *
+   * @fields:
+   *   version ::
+   *     The version number.
+   *
+   *   numRanges ::
+   *     The number of gasp ranges in table.
+   *
+   *   gaspRanges ::
+   *     An array of gasp ranges.
+   */
+  typedef struct  TT_Gasp_
+  {
+    FT_UShort     version;
+    FT_UShort     numRanges;
+    TT_GaspRange  gaspRanges;
+
+  } TT_GaspRec;
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /***                    EMBEDDED BITMAPS SUPPORT                       ***/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_SBit_MetricsRec
+   *
+   * @description:
+   *   A structure used to hold the big metrics of a given glyph bitmap in a
+   *   TrueType or OpenType font.  These are usually found in the 'EBDT'
+   *   (Microsoft) or 'bloc' (Apple) table.
+   *
+   * @fields:
+   *   height ::
+   *     The glyph height in pixels.
+   *
+   *   width ::
+   *     The glyph width in pixels.
+   *
+   *   horiBearingX ::
+   *     The horizontal left bearing.
+   *
+   *   horiBearingY ::
+   *     The horizontal top bearing.
+   *
+   *   horiAdvance ::
+   *     The horizontal advance.
+   *
+   *   vertBearingX ::
+   *     The vertical left bearing.
+   *
+   *   vertBearingY ::
+   *     The vertical top bearing.
+   *
+   *   vertAdvance ::
+   *     The vertical advance.
+   */
+  typedef struct  TT_SBit_MetricsRec_
+  {
+    FT_UShort  height;
+    FT_UShort  width;
+
+    FT_Short   horiBearingX;
+    FT_Short   horiBearingY;
+    FT_UShort  horiAdvance;
+
+    FT_Short   vertBearingX;
+    FT_Short   vertBearingY;
+    FT_UShort  vertAdvance;
+
+  } TT_SBit_MetricsRec, *TT_SBit_Metrics;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_SBit_SmallMetricsRec
+   *
+   * @description:
+   *   A structure used to hold the small metrics of a given glyph bitmap in
+   *   a TrueType or OpenType font.  These are usually found in the 'EBDT'
+   *   (Microsoft) or the 'bdat' (Apple) table.
+   *
+   * @fields:
+   *   height ::
+   *     The glyph height in pixels.
+   *
+   *   width ::
+   *     The glyph width in pixels.
+   *
+   *   bearingX ::
+   *     The left-side bearing.
+   *
+   *   bearingY ::
+   *     The top-side bearing.
+   *
+   *   advance ::
+   *     The advance width or height.
+   */
+  typedef struct  TT_SBit_Small_Metrics_
+  {
+    FT_Byte  height;
+    FT_Byte  width;
+
+    FT_Char  bearingX;
+    FT_Char  bearingY;
+    FT_Byte  advance;
+
+  } TT_SBit_SmallMetricsRec, *TT_SBit_SmallMetrics;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_SBit_LineMetricsRec
+   *
+   * @description:
+   *   A structure used to describe the text line metrics of a given bitmap
+   *   strike, for either a horizontal or vertical layout.
+   *
+   * @fields:
+   *   ascender ::
+   *     The ascender in pixels.
+   *
+   *   descender ::
+   *     The descender in pixels.
+   *
+   *   max_width ::
+   *     The maximum glyph width in pixels.
+   *
+   *   caret_slope_enumerator ::
+   *     Rise of the caret slope, typically set to 1 for non-italic fonts.
+   *
+   *   caret_slope_denominator ::
+   *     Rise of the caret slope, typically set to 0 for non-italic fonts.
+   *
+   *   caret_offset ::
+   *     Offset in pixels to move the caret for proper positioning.
+   *
+   *   min_origin_SB ::
+   *     Minimum of horiBearingX (resp.  vertBearingY).
+   *   min_advance_SB ::
+   *     Minimum of
+   *
+   *     horizontal advance - ( horiBearingX + width )
+   *
+   *     resp.
+   *
+   *     vertical advance - ( vertBearingY + height )
+   *
+   *   max_before_BL ::
+   *     Maximum of horiBearingY (resp.  vertBearingY).
+   *
+   *   min_after_BL ::
+   *     Minimum of
+   *
+   *     horiBearingY - height
+   *
+   *     resp.
+   *
+   *     vertBearingX - width
+   *
+   *   pads ::
+   *     Unused (to make the size of the record a multiple of 32 bits.
+   */
+  typedef struct  TT_SBit_LineMetricsRec_
+  {
+    FT_Char  ascender;
+    FT_Char  descender;
+    FT_Byte  max_width;
+    FT_Char  caret_slope_numerator;
+    FT_Char  caret_slope_denominator;
+    FT_Char  caret_offset;
+    FT_Char  min_origin_SB;
+    FT_Char  min_advance_SB;
+    FT_Char  max_before_BL;
+    FT_Char  min_after_BL;
+    FT_Char  pads[2];
+
+  } TT_SBit_LineMetricsRec, *TT_SBit_LineMetrics;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_SBit_RangeRec
+   *
+   * @description:
+   *   A TrueType/OpenType subIndexTable as defined in the 'EBLC' (Microsoft)
+   *   or 'bloc' (Apple) tables.
+   *
+   * @fields:
+   *   first_glyph ::
+   *     The first glyph index in the range.
+   *
+   *   last_glyph ::
+   *     The last glyph index in the range.
+   *
+   *   index_format ::
+   *     The format of index table.  Valid values are 1 to 5.
+   *
+   *   image_format ::
+   *     The format of 'EBDT' image data.
+   *
+   *   image_offset ::
+   *     The offset to image data in 'EBDT'.
+   *
+   *   image_size ::
+   *     For index formats 2 and 5.  This is the size in bytes of each glyph
+   *     bitmap.
+   *
+   *   big_metrics ::
+   *     For index formats 2 and 5.  This is the big metrics for each glyph
+   *     bitmap.
+   *
+   *   num_glyphs ::
+   *     For index formats 4 and 5.  This is the number of glyphs in the code
+   *     array.
+   *
+   *   glyph_offsets ::
+   *     For index formats 1 and 3.
+   *
+   *   glyph_codes ::
+   *     For index formats 4 and 5.
+   *
+   *   table_offset ::
+   *     The offset of the index table in the 'EBLC' table.  Only used during
+   *     strike loading.
+   */
+  typedef struct  TT_SBit_RangeRec_
+  {
+    FT_UShort           first_glyph;
+    FT_UShort           last_glyph;
+
+    FT_UShort           index_format;
+    FT_UShort           image_format;
+    FT_ULong            image_offset;
+
+    FT_ULong            image_size;
+    TT_SBit_MetricsRec  metrics;
+    FT_ULong            num_glyphs;
+
+    FT_ULong*           glyph_offsets;
+    FT_UShort*          glyph_codes;
+
+    FT_ULong            table_offset;
+
+  } TT_SBit_RangeRec, *TT_SBit_Range;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_SBit_StrikeRec
+   *
+   * @description:
+   *   A structure used describe a given bitmap strike in the 'EBLC'
+   *   (Microsoft) or 'bloc' (Apple) tables.
+   *
+   * @fields:
+   *  num_index_ranges ::
+   *    The number of index ranges.
+   *
+   *  index_ranges ::
+   *    An array of glyph index ranges.
+   *
+   *  color_ref ::
+   *    Unused.  `color_ref` is put in for future enhancements, but these
+   *    fields are already in use by other platforms (e.g. Newton).  For
+   *    details, please see
+   *
+   *    https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6bloc.html
+   *
+   *  hori ::
+   *    The line metrics for horizontal layouts.
+   *
+   *  vert ::
+   *    The line metrics for vertical layouts.
+   *
+   *  start_glyph ::
+   *    The lowest glyph index for this strike.
+   *
+   *  end_glyph ::
+   *    The highest glyph index for this strike.
+   *
+   *  x_ppem ::
+   *    The number of horizontal pixels per EM.
+   *
+   *  y_ppem ::
+   *    The number of vertical pixels per EM.
+   *
+   *  bit_depth ::
+   *    The bit depth.  Valid values are 1, 2, 4, and 8.
+   *
+   *  flags ::
+   *    Is this a vertical or horizontal strike?  For details, please see
+   *
+   *    https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6bloc.html
+   */
+  typedef struct  TT_SBit_StrikeRec_
+  {
+    FT_Int                  num_ranges;
+    TT_SBit_Range           sbit_ranges;
+    FT_ULong                ranges_offset;
+
+    FT_ULong                color_ref;
+
+    TT_SBit_LineMetricsRec  hori;
+    TT_SBit_LineMetricsRec  vert;
+
+    FT_UShort               start_glyph;
+    FT_UShort               end_glyph;
+
+    FT_Byte                 x_ppem;
+    FT_Byte                 y_ppem;
+
+    FT_Byte                 bit_depth;
+    FT_Char                 flags;
+
+  } TT_SBit_StrikeRec, *TT_SBit_Strike;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_SBit_ComponentRec
+   *
+   * @description:
+   *   A simple structure to describe a compound sbit element.
+   *
+   * @fields:
+   *   glyph_code ::
+   *     The element's glyph index.
+   *
+   *   x_offset ::
+   *     The element's left bearing.
+   *
+   *   y_offset ::
+   *     The element's top bearing.
+   */
+  typedef struct  TT_SBit_ComponentRec_
+  {
+    FT_UShort  glyph_code;
+    FT_Char    x_offset;
+    FT_Char    y_offset;
+
+  } TT_SBit_ComponentRec, *TT_SBit_Component;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_SBit_ScaleRec
+   *
+   * @description:
+   *   A structure used describe a given bitmap scaling table, as defined in
+   *   the 'EBSC' table.
+   *
+   * @fields:
+   *   hori ::
+   *     The horizontal line metrics.
+   *
+   *   vert ::
+   *     The vertical line metrics.
+   *
+   *   x_ppem ::
+   *     The number of horizontal pixels per EM.
+   *
+   *   y_ppem ::
+   *     The number of vertical pixels per EM.
+   *
+   *   x_ppem_substitute ::
+   *     Substitution x_ppem value.
+   *
+   *   y_ppem_substitute ::
+   *     Substitution y_ppem value.
+   */
+  typedef struct  TT_SBit_ScaleRec_
+  {
+    TT_SBit_LineMetricsRec  hori;
+    TT_SBit_LineMetricsRec  vert;
+
+    FT_Byte                 x_ppem;
+    FT_Byte                 y_ppem;
+
+    FT_Byte                 x_ppem_substitute;
+    FT_Byte                 y_ppem_substitute;
+
+  } TT_SBit_ScaleRec, *TT_SBit_Scale;
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /***                  POSTSCRIPT GLYPH NAMES SUPPORT                   ***/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_Post_20Rec
+   *
+   * @description:
+   *   Postscript names sub-table, format 2.0.  Stores the PS name of each
+   *   glyph in the font face.
+   *
+   * @fields:
+   *   num_glyphs ::
+   *     The number of named glyphs in the table.
+   *
+   *   num_names ::
+   *     The number of PS names stored in the table.
+   *
+   *   glyph_indices ::
+   *     The indices of the glyphs in the names arrays.
+   *
+   *   glyph_names ::
+   *     The PS names not in Mac Encoding.
+   */
+  typedef struct  TT_Post_20Rec_
+  {
+    FT_UShort   num_glyphs;
+    FT_UShort   num_names;
+    FT_UShort*  glyph_indices;
+    FT_Char**   glyph_names;
+
+  } TT_Post_20Rec, *TT_Post_20;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_Post_25Rec
+   *
+   * @description:
+   *   Postscript names sub-table, format 2.5.  Stores the PS name of each
+   *   glyph in the font face.
+   *
+   * @fields:
+   *   num_glyphs ::
+   *     The number of glyphs in the table.
+   *
+   *   offsets ::
+   *     An array of signed offsets in a normal Mac Postscript name encoding.
+   */
+  typedef struct  TT_Post_25_
+  {
+    FT_UShort  num_glyphs;
+    FT_Char*   offsets;
+
+  } TT_Post_25Rec, *TT_Post_25;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   TT_Post_NamesRec
+   *
+   * @description:
+   *   Postscript names table, either format 2.0 or 2.5.
+   *
+   * @fields:
+   *   loaded ::
+   *     A flag to indicate whether the PS names are loaded.
+   *
+   *   format_20 ::
+   *     The sub-table used for format 2.0.
+   *
+   *   format_25 ::
+   *     The sub-table used for format 2.5.
+   */
+  typedef struct  TT_Post_NamesRec_
+  {
+    FT_Bool  loaded;
+
+    union
+    {
+      TT_Post_20Rec  format_20;
+      TT_Post_25Rec  format_25;
+
+    } names;
+
+  } TT_Post_NamesRec, *TT_Post_Names;
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /***                    GX VARIATION TABLE SUPPORT                     ***/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+  typedef struct GX_BlendRec_  *GX_Blend;
+#endif
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /***              EMBEDDED BDF PROPERTIES TABLE SUPPORT                ***/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+
+  /*
+   * These types are used to support a `BDF ' table that isn't part of the
+   * official TrueType specification.  It is mainly used in SFNT-based bitmap
+   * fonts that were generated from a set of BDF fonts.
+   *
+   * The format of the table is as follows.
+   *
+   *   USHORT version `BDF ' table version number, should be 0x0001.  USHORT
+   *   strikeCount Number of strikes (bitmap sizes) in this table.  ULONG
+   *   stringTable Offset (from start of BDF table) to string
+   *                         table.
+   *
+   * This is followed by an array of `strikeCount' descriptors, having the
+   * following format.
+   *
+   *   USHORT ppem Vertical pixels per EM for this strike.  USHORT numItems
+   *   Number of items for this strike (properties and
+   *                         atoms).  Maximum is 255.
+   *
+   * This array in turn is followed by `strikeCount' value sets.  Each `value
+   * set' is an array of `numItems' items with the following format.
+   *
+   *   ULONG    item_name    Offset in string table to item name.
+   *   USHORT   item_type    The item type.  Possible values are
+   *                            0 => string (e.g., COMMENT)
+   *                            1 => atom   (e.g., FONT or even SIZE)
+   *                            2 => int32
+   *                            3 => uint32
+   *                         0x10 => A flag to indicate a properties.  This
+   *                                 is ORed with the above values.
+   *   ULONG    item_value   For strings  => Offset into string table without
+   *                                         the corresponding double quotes.
+   *                         For atoms    => Offset into string table.
+   *                         For integers => Direct value.
+   *
+   * All strings in the string table consist of bytes and are
+   * zero-terminated.
+   *
+   */
+
+#ifdef TT_CONFIG_OPTION_BDF
+
+  typedef struct  TT_BDFRec_
+  {
+    FT_Byte*   table;
+    FT_Byte*   table_end;
+    FT_Byte*   strings;
+    FT_ULong   strings_size;
+    FT_UInt    num_strikes;
+    FT_Bool    loaded;
+
+  } TT_BDFRec, *TT_BDF;
+
+#endif /* TT_CONFIG_OPTION_BDF */
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /***                  ORIGINAL TT_FACE CLASS DEFINITION                ***/
+  /***                                                                   ***/
+  /***                                                                   ***/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+
+
+  /**************************************************************************
+   *
+   * This structure/class is defined here because it is common to the
+   * following formats: TTF, OpenType-TT, and OpenType-CFF.
+   *
+   * Note, however, that the classes TT_Size and TT_GlyphSlot are not shared
+   * between font drivers, and are thus defined in `ttobjs.h`.
+   *
+   */
+
+
+  /**************************************************************************
+   *
+   * @type:
+   *   TT_Face
+   *
+   * @description:
+   *   A handle to a TrueType face/font object.  A TT_Face encapsulates the
+   *   resolution and scaling independent parts of a TrueType font resource.
+   *
+   * @note:
+   *   The TT_Face structure is also used as a 'parent class' for the
+   *   OpenType-CFF class (T2_Face).
+   */
+  typedef struct TT_FaceRec_*  TT_Face;
+
+
+  /* a function type used for the truetype bytecode interpreter hooks */
+  typedef FT_Error
+  (*TT_Interpreter)( void*  exec_context );
+
+  /* forward declaration */
+  typedef struct TT_LoaderRec_*  TT_Loader;
+
+
+  /**************************************************************************
+   *
+   * @functype:
+   *   TT_Loader_GotoTableFunc
+   *
+   * @description:
+   *   Seeks a stream to the start of a given TrueType table.
+   *
+   * @input:
+   *   face ::
+   *     A handle to the target face object.
+   *
+   *   tag ::
+   *     A 4-byte tag used to name the table.
+   *
+   *   stream ::
+   *     The input stream.
+   *
+   * @output:
+   *   length ::
+   *     The length of the table in bytes.  Set to 0 if not needed.
+   *
+   * @return:
+   *   FreeType error code.  0 means success.
+   *
+   * @note:
+   *   The stream cursor must be at the font file's origin.
+   */
+  typedef FT_Error
+  (*TT_Loader_GotoTableFunc)( TT_Face    face,
+                              FT_ULong   tag,
+                              FT_Stream  stream,
+                              FT_ULong*  length );
+
+
+  /**************************************************************************
+   *
+   * @functype:
+   *   TT_Loader_StartGlyphFunc
+   *
+   * @description:
+   *   Seeks a stream to the start of a given glyph element, and opens a
+   *   frame for it.
+   *
+   * @input:
+   *   loader ::
+   *     The current TrueType glyph loader object.
+   *
+   *     glyph index :: The index of the glyph to access.
+   *
+   *   offset ::
+   *     The offset of the glyph according to the 'locations' table.
+   *
+   *   byte_count ::
+   *     The size of the frame in bytes.
+   *
+   * @return:
+   *   FreeType error code.  0 means success.
+   *
+   * @note:
+   *   This function is normally equivalent to FT_STREAM_SEEK(offset)
+   *   followed by FT_FRAME_ENTER(byte_count) with the loader's stream, but
+   *   alternative formats (e.g. compressed ones) might use something
+   *   different.
+   */
+  typedef FT_Error
+  (*TT_Loader_StartGlyphFunc)( TT_Loader  loader,
+                               FT_UInt    glyph_index,
+                               FT_ULong   offset,
+                               FT_UInt    byte_count );
+
+
+  /**************************************************************************
+   *
+   * @functype:
+   *   TT_Loader_ReadGlyphFunc
+   *
+   * @description:
+   *   Reads one glyph element (its header, a simple glyph, or a composite)
+   *   from the loader's current stream frame.
+   *
+   * @input:
+   *   loader ::
+   *     The current TrueType glyph loader object.
+   *
+   * @return:
+   *   FreeType error code.  0 means success.
+   */
+  typedef FT_Error
+  (*TT_Loader_ReadGlyphFunc)( TT_Loader  loader );
+
+
+  /**************************************************************************
+   *
+   * @functype:
+   *   TT_Loader_EndGlyphFunc
+   *
+   * @description:
+   *   Closes the current loader stream frame for the glyph.
+   *
+   * @input:
+   *   loader ::
+   *     The current TrueType glyph loader object.
+   */
+  typedef void
+  (*TT_Loader_EndGlyphFunc)( TT_Loader  loader );
+
+
+  typedef enum TT_SbitTableType_
+  {
+    TT_SBIT_TABLE_TYPE_NONE = 0,
+    TT_SBIT_TABLE_TYPE_EBLC, /* `EBLC' (Microsoft), */
+                             /* `bloc' (Apple)      */
+    TT_SBIT_TABLE_TYPE_CBLC, /* `CBLC' (Google)     */
+    TT_SBIT_TABLE_TYPE_SBIX, /* `sbix' (Apple)      */
+
+    /* do not remove */
+    TT_SBIT_TABLE_TYPE_MAX
+
+  } TT_SbitTableType;
+
+
+  /* OpenType 1.8 brings new tables for variation font support;  */
+  /* to make the old MM and GX fonts still work we need to check */
+  /* the presence (and validity) of the functionality provided   */
+  /* by those tables.  The following flag macros are for the     */
+  /* field `variation_support'.                                  */
+  /*                                                             */
+  /* Note that `fvar' gets checked immediately at font loading,  */
+  /* while the other features are only loaded if MM support is   */
+  /* actually requested.                                         */
+
+  /* FVAR */
+#define TT_FACE_FLAG_VAR_FVAR  ( 1 << 0 )
+
+  /* HVAR */
+#define TT_FACE_FLAG_VAR_HADVANCE  ( 1 << 1 )
+#define TT_FACE_FLAG_VAR_LSB       ( 1 << 2 )
+#define TT_FACE_FLAG_VAR_RSB       ( 1 << 3 )
+
+  /* VVAR */
+#define TT_FACE_FLAG_VAR_VADVANCE  ( 1 << 4 )
+#define TT_FACE_FLAG_VAR_TSB       ( 1 << 5 )
+#define TT_FACE_FLAG_VAR_BSB       ( 1 << 6 )
+#define TT_FACE_FLAG_VAR_VORG      ( 1 << 7 )
+
+  /* MVAR */
+#define TT_FACE_FLAG_VAR_MVAR  ( 1 << 8 )
+
+
+  /**************************************************************************
+   *
+   *                        TrueType Face Type
+   *
+   * @struct:
+   *   TT_Face
+   *
+   * @description:
+   *   The TrueType face class.  These objects model the resolution and
+   *   point-size independent data found in a TrueType font file.
+   *
+   * @fields:
+   *   root ::
+   *     The base FT_Face structure, managed by the base layer.
+   *
+   *   ttc_header ::
+   *     The TrueType collection header, used when the file is a 'ttc' rather
+   *     than a 'ttf'.  For ordinary font files, the field `ttc_header.count`
+   *     is set to 0.
+   *
+   *   format_tag ::
+   *     The font format tag.
+   *
+   *   num_tables ::
+   *     The number of TrueType tables in this font file.
+   *
+   *   dir_tables ::
+   *     The directory of TrueType tables for this font file.
+   *
+   *   header ::
+   *     The font's font header ('head' table).  Read on font opening.
+   *
+   *   horizontal ::
+   *     The font's horizontal header ('hhea' table).  This field also
+   *     contains the associated horizontal metrics table ('hmtx').
+   *
+   *   max_profile ::
+   *     The font's maximum profile table.  Read on font opening.  Note that
+   *     some maximum values cannot be taken directly from this table.  We
+   *     thus define additional fields below to hold the computed maxima.
+   *
+   *   vertical_info ::
+   *     A boolean which is set when the font file contains vertical metrics.
+   *     If not, the value of the 'vertical' field is undefined.
+   *
+   *   vertical ::
+   *     The font's vertical header ('vhea' table).  This field also contains
+   *     the associated vertical metrics table ('vmtx'), if found.
+   *     IMPORTANT: The contents of this field is undefined if the
+   *     `vertical_info` field is unset.
+   *
+   *   num_names ::
+   *     The number of name records within this TrueType font.
+   *
+   *   name_table ::
+   *     The table of name records ('name').
+   *
+   *   os2 ::
+   *     The font's OS/2 table ('OS/2').
+   *
+   *   postscript ::
+   *     The font's PostScript table ('post' table).  The PostScript glyph
+   *     names are not loaded by the driver on face opening.  See the
+   *     'ttpost' module for more details.
+   *
+   *   cmap_table ::
+   *     Address of the face's 'cmap' SFNT table in memory (it's an extracted
+   *     frame).
+   *
+   *   cmap_size ::
+   *     The size in bytes of the `cmap_table` described above.
+   *
+   *   goto_table ::
+   *     A function called by each TrueType table loader to position a
+   *     stream's cursor to the start of a given table according to its tag.
+   *     It defaults to TT_Goto_Face but can be different for strange formats
+   *     (e.g.  Type 42).
+   *
+   *   access_glyph_frame ::
+   *     A function used to access the frame of a given glyph within the
+   *     face's font file.
+   *
+   *   forget_glyph_frame ::
+   *     A function used to forget the frame of a given glyph when all data
+   *     has been loaded.
+   *
+   *   read_glyph_header ::
+   *     A function used to read a glyph header.  It must be called between
+   *     an 'access' and 'forget'.
+   *
+   *   read_simple_glyph ::
+   *     A function used to read a simple glyph.  It must be called after the
+   *     header was read, and before the 'forget'.
+   *
+   *   read_composite_glyph ::
+   *     A function used to read a composite glyph.  It must be called after
+   *     the header was read, and before the 'forget'.
+   *
+   *   sfnt ::
+   *     A pointer to the SFNT service.
+   *
+   *   psnames ::
+   *     A pointer to the PostScript names service.
+   *
+   *   mm ::
+   *     A pointer to the Multiple Masters service.
+   *
+   *   var ::
+   *     A pointer to the Metrics Variations service.
+   *
+   *   hdmx ::
+   *     The face's horizontal device metrics ('hdmx' table).  This table is
+   *     optional in TrueType/OpenType fonts.
+   *
+   *   gasp ::
+   *     The grid-fitting and scaling properties table ('gasp').  This table
+   *     is optional in TrueType/OpenType fonts.
+   *
+   *   pclt ::
+   *     The 'pclt' SFNT table.
+   *
+   *   num_sbit_scales ::
+   *     The number of sbit scales for this font.
+   *
+   *   sbit_scales ::
+   *     Array of sbit scales embedded in this font.  This table is optional
+   *     in a TrueType/OpenType font.
+   *
+   *   postscript_names ::
+   *     A table used to store the Postscript names of the glyphs for this
+   *     font.  See the file `ttconfig.h` for comments on the
+   *     TT_CONFIG_OPTION_POSTSCRIPT_NAMES option.
+   *
+   *   palette_data ::
+   *     Some fields from the 'CPAL' table that are directly indexed.
+   *
+   *   palette_index ::
+   *     The current palette index, as set by @FT_Palette_Select.
+   *
+   *   palette ::
+   *     An array containing the current palette's colors.
+   *
+   *   have_foreground_color ::
+   *     There was a call to @FT_Palette_Set_Foreground_Color.
+   *
+   *   foreground_color ::
+   *     The current foreground color corresponding to 'CPAL' color index
+   *     0xFFFF.  Only valid if `have_foreground_color` is set.
+   *
+   *   font_program_size ::
+   *     Size in bytecodes of the face's font program.  0 if none defined.
+   *     Ignored for Type 2 fonts.
+   *
+   *   font_program ::
+   *     The face's font program (bytecode stream) executed at load time,
+   *     also used during glyph rendering.  Comes from the 'fpgm' table.
+   *     Ignored for Type 2 font fonts.
+   *
+   *   cvt_program_size ::
+   *     The size in bytecodes of the face's cvt program.  Ignored for Type 2
+   *     fonts.
+   *
+   *   cvt_program ::
+   *     The face's cvt program (bytecode stream) executed each time an
+   *     instance/size is changed/reset.  Comes from the 'prep' table.
+   *     Ignored for Type 2 fonts.
+   *
+   *   cvt_size ::
+   *     Size of the control value table (in entries).  Ignored for Type 2
+   *     fonts.
+   *
+   *   cvt ::
+   *     The face's original control value table.  Coordinates are expressed
+   *     in unscaled font units (in 26.6 format).  Comes from the 'cvt~'
+   *     table.  Ignored for Type 2 fonts.
+   *
+   *     If varied by the `CVAR' table, non-integer values are possible.
+   *
+   *   interpreter ::
+   *     A pointer to the TrueType bytecode interpreters field is also used
+   *     to hook the debugger in 'ttdebug'.
+   *
+   *   extra ::
+   *     Reserved for third-party font drivers.
+   *
+   *   postscript_name ::
+   *     The PS name of the font.  Used by the postscript name service.
+   *
+   *   glyf_len ::
+   *     The length of the 'glyf' table.  Needed for malformed 'loca' tables.
+   *
+   *   glyf_offset ::
+   *     The file offset of the 'glyf' table.
+   *
+   *   is_cff2 ::
+   *     Set if the font format is CFF2.
+   *
+   *   doblend ::
+   *     A boolean which is set if the font should be blended (this is for GX
+   *     var).
+   *
+   *   blend ::
+   *     Contains the data needed to control GX variation tables (rather like
+   *     Multiple Master data).
+   *
+   *   variation_support ::
+   *     Flags that indicate which OpenType functionality related to font
+   *     variation support is present, valid, and usable.  For example,
+   *     TT_FACE_FLAG_VAR_FVAR is only set if we have at least one design
+   *     axis.
+   *
+   *   var_postscript_prefix ::
+   *     The PostScript name prefix needed for constructing a variation font
+   *     instance's PS name .
+   *
+   *   var_postscript_prefix_len ::
+   *     The length of the `var_postscript_prefix` string.
+   *
+   *   horz_metrics_size ::
+   *     The size of the 'hmtx' table.
+   *
+   *   vert_metrics_size ::
+   *     The size of the 'vmtx' table.
+   *
+   *   num_locations ::
+   *     The number of glyph locations in this TrueType file.  This should be
+   *     one more than the number of glyphs.  Ignored for Type 2 fonts.
+   *
+   *   glyph_locations ::
+   *     An array of longs.  These are offsets to glyph data within the
+   *     'glyf' table.  Ignored for Type 2 font faces.
+   *
+   *   hdmx_table ::
+   *     A pointer to the 'hdmx' table.
+   *
+   *   hdmx_table_size ::
+   *     The size of the 'hdmx' table.
+   *
+   *   hdmx_record_count ::
+   *     The number of hdmx records.
+   *
+   *   hdmx_record_size ::
+   *     The size of a single hdmx record.
+   *
+   *   hdmx_records ::
+   *     A array of pointers to the 'hdmx' table records sorted by ppem.
+   *
+   *   sbit_table ::
+   *     A pointer to the font's embedded bitmap location table.
+   *
+   *   sbit_table_size ::
+   *     The size of `sbit_table`.
+   *
+   *   sbit_table_type ::
+   *     The sbit table type (CBLC, sbix, etc.).
+   *
+   *   sbit_num_strikes ::
+   *     The number of sbit strikes exposed by FreeType's API, omitting
+   *     invalid strikes.
+   *
+   *   sbit_strike_map ::
+   *     A mapping between the strike indices exposed by the API and the
+   *     indices used in the font's sbit table.
+   *
+   *   cpal ::
+   *     A pointer to data related to the 'CPAL' table.  `NULL` if the table
+   *     is not available.
+   *
+   *   colr ::
+   *     A pointer to data related to the 'COLR' table.  `NULL` if the table
+   *     is not available.
+   *
+   *   kern_table ::
+   *     A pointer to the 'kern' table.
+   *
+   *   kern_table_size ::
+   *     The size of the 'kern' table.
+   *
+   *   num_kern_tables ::
+   *     The number of supported kern subtables (up to 32; FreeType
+   *     recognizes only horizontal ones with format 0).
+   *
+   *   kern_avail_bits ::
+   *     The availability status of kern subtables; if bit n is set, table n
+   *     is available.
+   *
+   *   kern_order_bits ::
+   *     The sortedness status of kern subtables; if bit n is set, table n is
+   *     sorted.
+   *
+   *   bdf ::
+   *     Data related to an SFNT font's 'bdf' table; see `tttypes.h`.
+   *
+   *   horz_metrics_offset ::
+   *     The file offset of the 'hmtx' table.
+   *
+   *   vert_metrics_offset ::
+   *     The file offset of the 'vmtx' table.
+   *
+   *   sph_found_func_flags ::
+   *     Flags identifying special bytecode functions (used by the v38
+   *     implementation of the bytecode interpreter).
+   *
+   *   sph_compatibility_mode ::
+   *     This flag is set if we are in ClearType backward compatibility mode
+   *     (used by the v38 implementation of the bytecode interpreter).
+   *
+   *   ebdt_start ::
+   *     The file offset of the sbit data table (CBDT, bdat, etc.).
+   *
+   *   ebdt_size ::
+   *     The size of the sbit data table.
+   */
+  typedef struct  TT_FaceRec_
+  {
+    FT_FaceRec            root;
+
+    TTC_HeaderRec         ttc_header;
+
+    FT_ULong              format_tag;
+    FT_UShort             num_tables;
+    TT_Table              dir_tables;
+
+    TT_Header             header;       /* TrueType header table          */
+    TT_HoriHeader         horizontal;   /* TrueType horizontal header     */
+
+    TT_MaxProfile         max_profile;
+
+    FT_Bool               vertical_info;
+    TT_VertHeader         vertical;     /* TT Vertical header, if present */
+
+    FT_UShort             num_names;    /* number of name records  */
+    TT_NameTableRec       name_table;   /* name table              */
+
+    TT_OS2                os2;          /* TrueType OS/2 table            */
+    TT_Postscript         postscript;   /* TrueType Postscript table      */
+
+    FT_Byte*              cmap_table;   /* extracted `cmap' table */
+    FT_ULong              cmap_size;
+
+    TT_Loader_GotoTableFunc   goto_table;
+
+    TT_Loader_StartGlyphFunc  access_glyph_frame;
+    TT_Loader_EndGlyphFunc    forget_glyph_frame;
+    TT_Loader_ReadGlyphFunc   read_glyph_header;
+    TT_Loader_ReadGlyphFunc   read_simple_glyph;
+    TT_Loader_ReadGlyphFunc   read_composite_glyph;
+
+    /* a typeless pointer to the SFNT_Interface table used to load */
+    /* the basic TrueType tables in the face object                */
+    void*                 sfnt;
+
+    /* a typeless pointer to the FT_Service_PsCMapsRec table used to */
+    /* handle glyph names <-> unicode & Mac values                   */
+    void*                 psnames;
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+    /* a typeless pointer to the FT_Service_MultiMasters table used to */
+    /* handle variation fonts                                          */
+    void*                 mm;
+
+    /* a typeless pointer to the FT_Service_MetricsVariationsRec table */
+    /* used to handle the HVAR, VVAR, and MVAR OpenType tables         */
+    void*                 var;
+#endif
+
+    /* a typeless pointer to the PostScript Aux service */
+    void*                 psaux;
+
+
+    /************************************************************************
+     *
+     * Optional TrueType/OpenType tables
+     *
+     */
+
+    /* grid-fitting and scaling table */
+    TT_GaspRec            gasp;                 /* the `gasp' table */
+
+    /* PCL 5 table */
+    TT_PCLT               pclt;
+
+    /* embedded bitmaps support */
+    FT_ULong              num_sbit_scales;
+    TT_SBit_Scale         sbit_scales;
+
+    /* postscript names table */
+    TT_Post_NamesRec      postscript_names;
+
+    /* glyph colors */
+    FT_Palette_Data       palette_data;         /* since 2.10 */
+    FT_UShort             palette_index;
+    FT_Color*             palette;
+    FT_Bool               have_foreground_color;
+    FT_Color              foreground_color;
+
+
+    /************************************************************************
+     *
+     * TrueType-specific fields (ignored by the CFF driver)
+     *
+     */
+
+    /* the font program, if any */
+    FT_ULong              font_program_size;
+    FT_Byte*              font_program;
+
+    /* the cvt program, if any */
+    FT_ULong              cvt_program_size;
+    FT_Byte*              cvt_program;
+
+    /* the original, unscaled, control value table */
+    FT_ULong              cvt_size;
+    FT_Int32*             cvt;
+
+    /* A pointer to the bytecode interpreter to use.  This is also */
+    /* used to hook the debugger for the `ttdebug' utility.        */
+    TT_Interpreter        interpreter;
+
+
+    /************************************************************************
+     *
+     * Other tables or fields. This is used by derivative formats like
+     * OpenType.
+     *
+     */
+
+    FT_Generic            extra;
+
+    const char*           postscript_name;
+
+    FT_ULong              glyf_len;
+    FT_ULong              glyf_offset;    /* since 2.7.1 */
+
+    FT_Bool               is_cff2;        /* since 2.7.1 */
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+    FT_Bool               doblend;
+    GX_Blend              blend;
+
+    FT_UInt32             variation_support;     /* since 2.7.1 */
+
+    const char*           var_postscript_prefix;     /* since 2.7.2 */
+    FT_UInt               var_postscript_prefix_len; /* since 2.7.2 */
+
+#endif
+
+    /* since version 2.2 */
+
+    FT_ULong              horz_metrics_size;
+    FT_ULong              vert_metrics_size;
+
+    FT_ULong              num_locations; /* up to 0xFFFF + 1 */
+    FT_Byte*              glyph_locations;
+
+    FT_Byte*              hdmx_table;
+    FT_ULong              hdmx_table_size;
+    FT_UInt               hdmx_record_count;
+    FT_ULong              hdmx_record_size;
+    FT_Byte**             hdmx_records;
+
+    FT_Byte*              sbit_table;
+    FT_ULong              sbit_table_size;
+    TT_SbitTableType      sbit_table_type;
+    FT_UInt               sbit_num_strikes;
+    FT_UInt*              sbit_strike_map;
+
+    FT_Byte*              kern_table;
+    FT_ULong              kern_table_size;
+    FT_UInt               num_kern_tables;
+    FT_UInt32             kern_avail_bits;
+    FT_UInt32             kern_order_bits;
+
+#ifdef TT_CONFIG_OPTION_BDF
+    TT_BDFRec             bdf;
+#endif /* TT_CONFIG_OPTION_BDF */
+
+    /* since 2.3.0 */
+    FT_ULong              horz_metrics_offset;
+    FT_ULong              vert_metrics_offset;
+
+#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
+    /* since 2.4.12 */
+    FT_ULong              sph_found_func_flags; /* special functions found */
+                                                /* for this face           */
+    FT_Bool               sph_compatibility_mode;
+#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */
+
+#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
+    /* since 2.7 */
+    FT_ULong              ebdt_start;  /* either `CBDT', `EBDT', or `bdat' */
+    FT_ULong              ebdt_size;
+#endif
+
+    /* since 2.10 */
+    void*                 cpal;
+    void*                 colr;
+
+    /* since 2.12 */
+    void*                 svg;
+
+  } TT_FaceRec;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *    TT_GlyphZoneRec
+   *
+   * @description:
+   *   A glyph zone is used to load, scale and hint glyph outline
+   *   coordinates.
+   *
+   * @fields:
+   *   memory ::
+   *     A handle to the memory manager.
+   *
+   *   max_points ::
+   *     The maximum size in points of the zone.
+   *
+   *   max_contours ::
+   *     Max size in links contours of the zone.
+   *
+   *   n_points ::
+   *     The current number of points in the zone.
+   *
+   *   n_contours ::
+   *     The current number of contours in the zone.
+   *
+   *   org ::
+   *     The original glyph coordinates (font units/scaled).
+   *
+   *   cur ::
+   *     The current glyph coordinates (scaled/hinted).
+   *
+   *   tags ::
+   *     The point control tags.
+   *
+   *   contours ::
+   *     The contours end points.
+   *
+   *   first_point ::
+   *     Offset of the current subglyph's first point.
+   */
+  typedef struct  TT_GlyphZoneRec_
+  {
+    FT_Memory   memory;
+    FT_UShort   max_points;
+    FT_Short    max_contours;
+    FT_UShort   n_points;    /* number of points in zone    */
+    FT_Short    n_contours;  /* number of contours          */
+
+    FT_Vector*  org;         /* original point coordinates  */
+    FT_Vector*  cur;         /* current point coordinates   */
+    FT_Vector*  orus;        /* original (unscaled) point coordinates */
+
+    FT_Byte*    tags;        /* current touch flags         */
+    FT_UShort*  contours;    /* contour end points          */
+
+    FT_UShort   first_point; /* offset of first (#0) point  */
+
+  } TT_GlyphZoneRec, *TT_GlyphZone;
+
+
+  /* handle to execution context */
+  typedef struct TT_ExecContextRec_*  TT_ExecContext;
+
+
+  /**************************************************************************
+   *
+   * @type:
+   *   TT_Size
+   *
+   * @description:
+   *   A handle to a TrueType size object.
+   */
+  typedef struct TT_SizeRec_*  TT_Size;
+
+
+  /* glyph loader structure */
+  typedef struct  TT_LoaderRec_
+  {
+    TT_Face          face;
+    TT_Size          size;
+    FT_GlyphSlot     glyph;
+    FT_GlyphLoader   gloader;
+
+    FT_ULong         load_flags;
+    FT_UInt          glyph_index;
+
+    FT_Stream        stream;
+    FT_UInt          byte_len;
+
+    FT_Short         n_contours;
+    FT_BBox          bbox;
+    FT_Int           left_bearing;
+    FT_Int           advance;
+    FT_Int           linear;
+    FT_Bool          linear_def;
+    FT_Vector        pp1;
+    FT_Vector        pp2;
+
+    /* the zone where we load our glyphs */
+    TT_GlyphZoneRec  base;
+    TT_GlyphZoneRec  zone;
+
+    TT_ExecContext   exec;
+    FT_Byte*         instructions;
+    FT_ULong         ins_pos;
+
+    /* for possible extensibility in other formats */
+    void*            other;
+
+    /* since version 2.1.8 */
+    FT_Int           top_bearing;
+    FT_Int           vadvance;
+    FT_Vector        pp3;
+    FT_Vector        pp4;
+
+    /* since version 2.2.1 */
+    FT_Byte*         cursor;
+    FT_Byte*         limit;
+
+    /* since version 2.6.2 */
+    FT_ListRec       composites;
+
+    /* since version 2.11.2 */
+    FT_Byte*         widthp;
+
+  } TT_LoaderRec;
+
+
+FT_END_HEADER
+
+#endif /* TTTYPES_H_ */
+
+
+/* END */