src/java.desktop/share/native/libfreetype/include/freetype/internal/wofftypes.h

@@ -3,11 +3,11 @@
  * wofftypes.h
  *
  *   Basic WOFF/WOFF2 type definitions and interface (specification
  *   only).
  *
- * Copyright (C) 1996-2019 by
+ * Copyright (C) 1996-2020 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

@@ -102,10 +102,211 @@
     FT_ULong  OrigOffset;    /* uncompressed table file offset */
                              /* (not in the WOFF file)         */
   } WOFF_TableRec, *WOFF_Table;
 
 
+  /**************************************************************************
+   *
+   * @struct:
+   *   WOFF2_TtcFontRec
+   *
+   * @description:
+   *   Metadata for a TTC font entry in WOFF2.
+   *
+   * @fields:
+   *   flavor ::
+   *     TTC font flavor.
+   *
+   *   num_tables ::
+   *     Number of tables in TTC, indicating number of elements in
+   *     `table_indices`.
+   *
+   *   table_indices ::
+   *     Array of table indices for each TTC font.
+   */
+  typedef struct  WOFF2_TtcFontRec_
+  {
+    FT_ULong    flavor;
+    FT_UShort   num_tables;
+    FT_UShort*  table_indices;
+
+  } WOFF2_TtcFontRec, *WOFF2_TtcFont;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   WOFF2_HeaderRec
+   *
+   * @description:
+   *   WOFF2 file format header.
+   *
+   * @fields:
+   *   See
+   *
+   *     https://www.w3.org/TR/WOFF2/#woff20Header
+   *
+   * @note:
+   *   We don't care about the fields `reserved`, `majorVersion` and
+   *   `minorVersion`, so they are not included.  The `totalSfntSize` field
+   *   does not necessarily represent the actual size of the uncompressed
+   *   SFNT font stream, so that is used as a reference value instead.
+   */
+  typedef struct  WOFF2_HeaderRec_
+  {
+    FT_ULong   signature;
+    FT_ULong   flavor;
+    FT_ULong   length;
+    FT_UShort  num_tables;
+    FT_ULong   totalSfntSize;
+    FT_ULong   totalCompressedSize;
+    FT_ULong   metaOffset;
+    FT_ULong   metaLength;
+    FT_ULong   metaOrigLength;
+    FT_ULong   privOffset;
+    FT_ULong   privLength;
+
+    FT_ULong   uncompressed_size;    /* uncompressed brotli stream size */
+    FT_ULong   compressed_offset;    /* compressed stream offset        */
+    FT_ULong   header_version;       /* version of original TTC Header  */
+    FT_UShort  num_fonts;            /* number of fonts in TTC          */
+    FT_ULong   actual_sfnt_size;     /* actual size of sfnt stream      */
+
+    WOFF2_TtcFont  ttc_fonts;        /* metadata for fonts in a TTC     */
+
+  } WOFF2_HeaderRec, *WOFF2_Header;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   WOFF2_TableRec
+   *
+   * @description:
+   *   This structure describes a given table of a WOFF2 font.
+   *
+   * @fields:
+   *   See
+   *
+   *     https://www.w3.org/TR/WOFF2/#table_dir_format
+   */
+  typedef struct  WOFF2_TableRec_
+  {
+    FT_Byte   FlagByte;           /* table type and flags      */
+    FT_ULong  Tag;                /* table file offset         */
+    FT_ULong  dst_length;         /* uncompressed table length */
+    FT_ULong  TransformLength;    /* transformed length        */
+
+    FT_ULong  flags;              /* calculated flags          */
+    FT_ULong  src_offset;         /* compressed table offset   */
+    FT_ULong  src_length;         /* compressed table length   */
+    FT_ULong  dst_offset;         /* uncompressed table offset */
+
+  } WOFF2_TableRec, *WOFF2_Table;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   WOFF2_InfoRec
+   *
+   * @description:
+   *   Metadata for WOFF2 font that may be required for reconstruction of
+   *   sfnt tables.
+   *
+   * @fields:
+   *   header_checksum ::
+   *     Checksum of SFNT offset table.
+   *
+   *   num_glyphs ::
+   *     Number of glyphs in the font.
+   *
+   *   num_hmetrics ::
+   *     `numberOfHMetrics` field in the 'hhea' table.
+   *
+   *   x_mins ::
+   *     `xMin` values of glyph bounding box.
+   *
+   *   glyf_table ::
+   *     A pointer to the `glyf' table record.
+   *
+   *   loca_table ::
+   *     A pointer to the `loca' table record.
+   *
+   *   head_table ::
+   *     A pointer to the `head' table record.
+   */
+  typedef struct  WOFF2_InfoRec_
+  {
+    FT_ULong   header_checksum;
+    FT_UShort  num_glyphs;
+    FT_UShort  num_hmetrics;
+    FT_Short*  x_mins;
+
+    WOFF2_Table  glyf_table;
+    WOFF2_Table  loca_table;
+    WOFF2_Table  head_table;
+
+  } WOFF2_InfoRec, *WOFF2_Info;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   WOFF2_SubstreamRec
+   *
+   * @description:
+   *   This structure stores information about a substream in the transformed
+   *   'glyf' table in a WOFF2 stream.
+   *
+   * @fields:
+   *   start ::
+   *     Beginning of the substream relative to uncompressed table stream.
+   *
+   *   offset ::
+   *     Offset of the substream relative to uncompressed table stream.
+   *
+   *   size ::
+   *     Size of the substream.
+   */
+  typedef struct  WOFF2_SubstreamRec_
+  {
+    FT_ULong  start;
+    FT_ULong  offset;
+    FT_ULong  size;
+
+  } WOFF2_SubstreamRec, *WOFF2_Substream;
+
+
+  /**************************************************************************
+   *
+   * @struct:
+   *   WOFF2_PointRec
+   *
+   * @description:
+   *   This structure stores information about a point in the transformed
+   *   'glyf' table in a WOFF2 stream.
+   *
+   * @fields:
+   *   x ::
+   *     x-coordinate of point.
+   *
+   *   y ::
+   *     y-coordinate of point.
+   *
+   *   on_curve ::
+   *     Set if point is on-curve.
+   */
+  typedef struct  WOFF2_PointRec_
+  {
+    FT_Int   x;
+    FT_Int   y;
+    FT_Bool  on_curve;
+
+  } WOFF2_PointRec, *WOFF2_Point;
+
+
 FT_END_HEADER
 
 #endif /* WOFFTYPES_H_ */