kc3-lang/freetype/src/smooth/ftspic.c

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• Hash : c1e22f39
  Author :
  Date : 2009-04-05T18:14:04
  

  Position Independent Code (PIC) support in smooth renderer. * src/smooth/ftsmooth.h declare ft_smooth_renderer_class, ft_smooth_lcd_renderer_class and ft_smooth_lcd_v_renderer_class using macros from ftrender.h, when FT_CONFIG_OPTION_PIC is defined create and destroy functions will be declared. * src/smooth/ftsmooth.c when FT_CONFIG_OPTION_PIC is defined the following structs: ft_smooth_renderer_class, ft_smooth_lcd_renderer_class and ft_smooth_lcd_v_renderer_class will have functions to init or create and destroy them instead of being allocated in the global scope. And macros will be used from ftspic.h in order to access ft_grays_raster from the pic_container (allocated in ftgrays.c). * src/smooth/ftgrays.h include FT_CONFIG_CONFIG_H * src/smooth/ftgrays.c when FT_CONFIG_OPTION_PIC is NOT defined func_interface was moved from gray_convert_glyph_inner function to the global scope. When FT_CONFIG_OPTION_PIC is defined func_interface and ft_grays_raster structs will have functions to init them instead of being allocated in the global scope. And func_interface will be allocated on the stack of gray_convert_glyph_inner. New Files: * src/smooth/ftspic.h declare struct to hold PIC globals for smooth renderer and macros to access them. * src/smooth/ftspic.c implement functions to allocate, destroy and initialize PIC globals for smooth renderer. * src/smooth/smooth.c add new file to build: ftspic.c. * src/smooth/jamfile add new files to FT2_MULTI build: ftspic.c.

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• src/smooth/ftspic.c

• /***************************************************************************/
  /*                                                                         */
  /*  ftspic.c                                                               */
  /*                                                                         */
  /*    The FreeType position independent code services for smooth module.   */
  /*                                                                         */
  /*  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 "ftspic.h"
  
  #ifdef FT_CONFIG_OPTION_PIC
  
    /* forward declaration of PIC init functions from ftgrays.c */
    void FT_Init_Class_ft_grays_raster(FT_Raster_Funcs*);
  
    void
    ft_smooth_renderer_class_pic_free(  FT_Library library )
    {
      FT_PIC_Container* pic_container = &library->pic_container;
      FT_Memory memory = library->memory;
      if ( pic_container->smooth )
      {
        SmoothPIC* container = (SmoothPIC*)pic_container->smooth;
        if(--container->ref_count)
          return;
        FT_FREE( container );
        pic_container->smooth = NULL;
      }
    }
  
  
    FT_Error
    ft_smooth_renderer_class_pic_init(  FT_Library library )
    {
      FT_PIC_Container* pic_container = &library->pic_container;
      FT_Error        error = FT_Err_Ok;
      SmoothPIC* container;
      FT_Memory memory = library->memory;
  
      /* since this function also serve smooth_lcd and smooth_lcdv renderers, 
         it implements reference counting */
      if(pic_container->smooth)
      {
        ((SmoothPIC*)pic_container->smooth)->ref_count++;
        return error;
      }
  
      /* 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->smooth = container;
      container->ref_count = 1;
  
      /* initialize pointer table - this is how the module usually expects this data */
      FT_Init_Class_ft_grays_raster(&container->ft_grays_raster);
  /*Exit:*/
      if(error)
        ft_smooth_renderer_class_pic_free(library);
      return error;
    }
  
    /* re-route these init and free functions to the above functions */
    FT_Error ft_smooth_lcd_renderer_class_pic_init(FT_Library library)
    {
      return ft_smooth_renderer_class_pic_init(library);
    }
    void ft_smooth_lcd_renderer_class_pic_free(FT_Library library)
    {
      ft_smooth_renderer_class_pic_free(library);
    }
    FT_Error ft_smooth_lcdv_renderer_class_pic_init(FT_Library library)
    {
      return ft_smooth_renderer_class_pic_init(library);
    }
    void ft_smooth_lcdv_renderer_class_pic_free(FT_Library library)
    {
      ft_smooth_renderer_class_pic_free(library);
    }
  
  #endif /* FT_CONFIG_OPTION_PIC */
  
  
  /* END */
  

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