godot/thirdparty/freetype/src/sfnt/ttsvg.c

/****************************************************************************
 *
 * ttsvg.c
 *
 *   OpenType SVG Color (specification).
 *
 * Copyright (C) 2022-2023 by
 * David Turner, Robert Wilhelm, Werner Lemberg, and Moazin Khatti.
 *
 * 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.
 *
 */


  /**************************************************************************
   *
   * 'SVG' table specification:
   *
   *    https://docs.microsoft.com/en-us/typography/opentype/spec/svg
   *
   */

#include <ft2build.h>
#include <freetype/internal/ftstream.h>
#include <freetype/internal/ftobjs.h>
#include <freetype/internal/ftdebug.h>
#include <freetype/tttags.h>
#include <freetype/ftgzip.h>
#include <freetype/otsvg.h>


#ifdef FT_CONFIG_OPTION_SVG

#include "ttsvg.h"


  /* NOTE: These table sizes are given by the specification. */
#define SVG_TABLE_HEADER_SIZE …
#define SVG_DOCUMENT_RECORD_SIZE …
#define SVG_DOCUMENT_LIST_MINIMUM_SIZE …
#define SVG_MINIMUM_SIZE …


  Svg;


  /**************************************************************************
   *
   * The macro FT_COMPONENT is used in trace mode.  It is an implicit
   * parameter of the FT_TRACE() and FT_ERROR() macros, usued to print/log
   * messages during execution.
   */
#undef  FT_COMPONENT
#define FT_COMPONENT …


  FT_LOCAL_DEF( FT_Error )
  tt_face_load_svg( TT_Face    face,
                    FT_Stream  stream )
  { … }


  FT_LOCAL_DEF( void )
  tt_face_free_svg( TT_Face  face )
  { … }


  Svg_doc;


  static Svg_doc
  extract_svg_doc( FT_Byte*  stream )
  { … }


  static FT_Int
  compare_svg_doc( Svg_doc  doc,
                   FT_UInt  glyph_index )
  { … }


  static FT_Error
  find_doc( FT_Byte*    document_records,
            FT_UShort   num_entries,
            FT_UInt     glyph_index,
            FT_ULong   *doc_offset,
            FT_ULong   *doc_length,
            FT_UShort  *start_glyph,
            FT_UShort  *end_glyph )
  { … }


  FT_LOCAL_DEF( FT_Error )
  tt_face_load_svg_doc( FT_GlyphSlot  glyph,
                        FT_UInt       glyph_index )
  { … }

#else /* !FT_CONFIG_OPTION_SVG */

  /* ANSI C doesn't like empty source files */
  typedef int  tt_svg_dummy_;

#endif /* !FT_CONFIG_OPTION_SVG */


/* END */