basepic.c

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Author : Oran Agra
Date : 2009-04-05 17:59:26
Hash : 636c294b
Message : Position Independent Code (PIC) support and infrastructure in base. * include/freetype/config/ftoption.h add FT_CONFIG_OPTION_PIC * include/freetype/internal/ftobjs.h Add pic_container member to FT_LibraryRec. Add macros to declare and init instances of FT_CMap_ClassRec. Add macros to init instances of FT_Outline_Funcs and FT_Raster_Funcs. Add macros to declare, allocate and initialize modules (FT_Module_Class). Add macros to declare, allocate and initialize renderers (FT_Renderer_Class). Add macro to init instances of FT_Glyph_Class. Add macros to declare, allocate and initialize drivers (FT_Driver_ClassRec). * include/freetype/internal/ftpic.h new file to declare the FT_PIC_Container struct and the functions to allocate and detroy it. * include/freetype/internal/ftserv.h add macros to allocate and destory arrays of FT_ServiceDescRec. * include/freetype/internal/internal.h define macro to include ftpic.h. New Files: * src/base/ftpic.c implement functions to allocate and destory the global pic_container. * src/base/basepic.h declare struct to hold PIC globals for base and macros to access them. * src/base/basepic.c implement functions to allocate, destroy and initialize PIC globals for base. * src/base/ftinit.c when FT_CONFIG_OPTION_PIC is defined implement functions that allocate and destroy ft_default_modules according to FT_CONFIG_MODULES_H in the pic_container instead of the global scope and use macro from basepic.h to access it. * src/base/ftobjs.c add calls to the functions that allocate and destroy the global pic_container when the library is created and destroyed. * src/base/jamfile add new files to FT2_MULTI build: ftpic.c and basepic.c. * src/base/ftbase.c add new files to build: ftpic.c and basepic.c. * src/base/ftglyph.c when FT_CONFIG_OPTION_PIC is defined ft_bitmap_glyph_class and ft_outline_glyph_class will be allocated in the pic_container instead of the global scope and use macros from basepic.h to access them. * src/base/ftbbox.c allocate bbox_interface stract on the stack instead of the global scope when FT_CONFIG_OPTION_PIC is defined. * src/base/ftstroke.c access ft_outline_glyph_class allocated in ftglyph.c via macros from basepic.h

src/base/basepic.c

/***************************************************************************/
/*                                                                         */
/*  basepic.c                                                              */
/*                                                                         */
/*    The FreeType position independent code services for base.            */
/*                                                                         */
/*  Copyright 2009 by                                                      */
/*  Oran Agra and Mickey Gabel.                                            */
/*                                                                         */
/*  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 <ft2build.h>
#include FT_FREETYPE_H
#include FT_INTERNAL_OBJECTS_H
#include "basepic.h"

#ifdef FT_CONFIG_OPTION_PIC

  /* forward declaration of PIC init functions from ftglyph.c */
  void FT_Init_Class_ft_outline_glyph_class(FT_Glyph_Class*);
  void FT_Init_Class_ft_bitmap_glyph_class(FT_Glyph_Class*);

  /* forward declaration of PIC init functions from ftinit.c */
  FT_Error ft_create_default_module_classes(FT_Library);
  void ft_destroy_default_module_classes(FT_Library);

  void
  ft_base_pic_free( FT_Library library )
  {
    FT_PIC_Container* pic_container = &library->pic_container;
    FT_Memory    memory = library->memory;
    if ( pic_container->base )
    {
      /* Destroy default module classes (in case FT_Add_Default_Modules was used) */
      ft_destroy_default_module_classes( library );

      FT_FREE( pic_container->base );
      pic_container->base = NULL;
    }
  }


  FT_Error
  ft_base_pic_init( FT_Library library )
  {
    FT_PIC_Container* pic_container = &library->pic_container;
    FT_Error        error = FT_Err_Ok;
    BasePIC*     container;
    FT_Memory    memory = library->memory;

    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC ( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof(*container) );
    pic_container->base = container;

    /* initialize default modules list and pointers */
    error = ft_create_default_module_classes( library );
    if ( error )
      goto Exit;

    /* initialize pointer table - this is how the module usually expects this data */
    FT_Init_Class_ft_outline_glyph_class(&container->ft_outline_glyph_class);
    FT_Init_Class_ft_bitmap_glyph_class(&container->ft_bitmap_glyph_class);

Exit:
    if(error)
      ft_base_pic_free(library);
    return error;
  }


#endif /* FT_CONFIG_OPTION_PIC */


/* END */

kc3-lang/freetype/src/base/basepic.c

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kc3-lang/freetype /src/base/basepic.c