godot/thirdparty/freetype/src/cache/ftcsbits.c

/****************************************************************************
 *
 * ftcsbits.c
 *
 *   FreeType sbits manager (body).
 *
 * Copyright (C) 2000-2023 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.
 *
 */


#include <freetype/ftcache.h>
#include "ftcsbits.h"
#include <freetype/internal/ftobjs.h>
#include <freetype/internal/ftdebug.h>
#include <freetype/fterrors.h>

#include "ftccback.h"
#include "ftcerror.h"

#undef  FT_COMPONENT
#define FT_COMPONENT …


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                     SBIT CACHE NODES                          *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/


  static FT_Error
  ftc_sbit_copy_bitmap( FTC_SBit    sbit,
                        FT_Bitmap*  bitmap,
                        FT_Memory   memory )
  { … }


  FT_LOCAL_DEF( void )
  ftc_snode_free( FTC_Node   ftcsnode,
                  FTC_Cache  cache )
  { … }


  FT_LOCAL_DEF( void )
  FTC_SNode_Free( FTC_SNode  snode,
                  FTC_Cache  cache )
  { … }


  /*
   * This function tries to load a small bitmap within a given FTC_SNode.
   * Note that it returns a non-zero error code _only_ in the case of
   * out-of-memory condition.  For all other errors (e.g., corresponding
   * to a bad font file), this function will mark the sbit as `unavailable'
   * and return a value of 0.
   *
   * You should also read the comment within the @ftc_snode_compare
   * function below to see how out-of-memory is handled during a lookup.
   */
  static FT_Error
  ftc_snode_load( FTC_SNode    snode,
                  FTC_Manager  manager,
                  FT_UInt      gindex,
                  FT_ULong    *asize )
  { … }


  FT_LOCAL_DEF( FT_Error )
  FTC_SNode_New( FTC_SNode  *psnode,
                 FTC_GQuery  gquery,
                 FTC_Cache   cache )
  { … }


  FT_LOCAL_DEF( FT_Error )
  ftc_snode_new( FTC_Node   *ftcpsnode,
                 FT_Pointer  ftcgquery,
                 FTC_Cache   cache )
  { … }


  FT_LOCAL_DEF( FT_Offset )
  ftc_snode_weight( FTC_Node   ftcsnode,
                    FTC_Cache  cache )
  { … }


#if 0

  FT_LOCAL_DEF( FT_Offset )
  FTC_SNode_Weight( FTC_SNode  snode )
  {
    return ftc_snode_weight( FTC_NODE( snode ), NULL );
  }

#endif /* 0 */


  FT_LOCAL_DEF( FT_Bool )
  ftc_snode_compare( FTC_Node    ftcsnode,
                     FT_Pointer  ftcgquery,
                     FTC_Cache   cache,
                     FT_Bool*    list_changed )
  { … }

/* END */