text: /****************************************************************************
   *
   * tttypes.h
   *
   *   Basic SFNT/TrueType type definitions and interface (specification
   *   only).
   *
   * Copyright (C) 1996-2021 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
     *     identical to 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_record_sizes ::
     *     An array holding the ppem sizes available in the 'hdmx' table.
     *
     *   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; /* in broken TTF, gid > 0xFFFF */
      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_record_sizes;
  
      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;
  
    } 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_Int           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;
  
    } TT_LoaderRec;
  
  
  FT_END_HEADER
  
  #endif /* TTTYPES_H_ */
  
  
  /* END */
  