/src/freetype/src/smooth/ftspic.c

  1/***************************************************************************/
  2/*                                                                         */
  3/*  ftspic.c                                                               */
  4/*                                                                         */
  5/*    The FreeType position independent code services for smooth module.   */
  6/*                                                                         */
  7/*  Copyright 2009, 2010 by                                                */
  8/*  Oran Agra and Mickey Gabel.                                            */
  9/*                                                                         */
 10/*  This file is part of the FreeType project, and may only be used,       */
 11/*  modified, and distributed under the terms of the FreeType project      */
 12/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
 13/*  this file you indicate that you have read the license and              */
 14/*  understand and accept it fully.                                        */
 15/*                                                                         */
 16/***************************************************************************/
 17
 18
 19#include <ft2build.h>
 20#include FT_FREETYPE_H
 21#include FT_INTERNAL_OBJECTS_H
 22#include "ftspic.h"
 23#include "ftsmerrs.h"
 24
 25#ifdef FT_CONFIG_OPTION_PIC
 26
 27  /* forward declaration of PIC init functions from ftgrays.c */
 28  void
 29  FT_Init_Class_ft_grays_raster( FT_Raster_Funcs*  funcs );
 30
 31  void
 32  ft_smooth_renderer_class_pic_free( FT_Library  library )
 33  {
 34    FT_PIC_Container*  pic_container = &library->pic_container;
 35    FT_Memory  memory = library->memory;
 36
 37
 38    if ( pic_container->smooth )
 39    {
 40      SmoothPIC*  container = (SmoothPIC*)pic_container->smooth;
 41
 42
 43      if ( --container->ref_count )
 44        return;
 45      FT_FREE( container );
 46      pic_container->smooth = NULL;
 47    }
 48  }
 49
 50
 51  FT_Error
 52  ft_smooth_renderer_class_pic_init( FT_Library  library )
 53  {
 54    FT_PIC_Container*  pic_container = &library->pic_container;
 55    FT_Error           error         = Smooth_Err_Ok;
 56    SmoothPIC*         container;
 57    FT_Memory          memory        = library->memory;
 58
 59
 60    /* since this function also serve smooth_lcd and smooth_lcdv renderers,
 61       it implements reference counting */
 62    if ( pic_container->smooth )
 63    {
 64      ((SmoothPIC*)pic_container->smooth)->ref_count++;
 65      return error;
 66    }
 67
 68    /* allocate pointer, clear and set global container pointer */
 69    if ( FT_ALLOC ( container, sizeof ( *container ) ) )
 70      return error;
 71    FT_MEM_SET( container, 0, sizeof ( *container ) );
 72    pic_container->smooth = container;
 73    container->ref_count = 1;
 74
 75    /* initialize pointer table - this is how the module usually expects this data */
 76    FT_Init_Class_ft_grays_raster( &container->ft_grays_raster );
 77/*Exit:*/
 78    if ( error )
 79      ft_smooth_renderer_class_pic_free( library );
 80    return error;
 81  }
 82
 83  /* re-route these init and free functions to the above functions */
 84  FT_Error ft_smooth_lcd_renderer_class_pic_init( FT_Library  library )
 85  {
 86    return ft_smooth_renderer_class_pic_init( library );
 87  }
 88
 89  void ft_smooth_lcd_renderer_class_pic_free( FT_Library  library )
 90  {
 91    ft_smooth_renderer_class_pic_free( library );
 92  }
 93
 94  FT_Error ft_smooth_lcdv_renderer_class_pic_init( FT_Library  library )
 95  {
 96    return ft_smooth_renderer_class_pic_init( library );
 97  }
 98
 99  void ft_smooth_lcdv_renderer_class_pic_free( FT_Library  library )
100  {
101    ft_smooth_renderer_class_pic_free( library );
102  }
103
104#endif /* FT_CONFIG_OPTION_PIC */
105
106
107/* END */