src/third_party/freetype2/src/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
  24 #ifdef FT_CONFIG_OPTION_PIC
  25
  26   /* forward declaration of PIC init functions from ftgrays.c */
  27   void FT_Init_Class_ft_grays_raster(FT_Raster_Funcs*);
  28
  29   void
  30   ft_smooth_renderer_class_pic_free(  FT_Library library )
  31   {
  32     FT_PIC_Container* pic_container = &library->pic_container;
  33     FT_Memory memory = library->memory;
  34     if ( pic_container->smooth )
  35     {
  36       SmoothPIC* container = (SmoothPIC*)pic_container->smooth;
  37       if(--container->ref_count)
  38         return;
  39       FT_FREE( container );
  40       pic_container->smooth = NULL;
  41     }
  42   }
  43
  44
  45   FT_Error
  46   ft_smooth_renderer_class_pic_init( FT_Library  library )
  47   {
  48     FT_PIC_Container*  pic_container = &library->pic_container;
  49     FT_Error           error         = Smooth_Err_Ok;
  50     SmoothPIC*         container;
  51     FT_Memory          memory        = library->memory;
  52
  53
  54     /* since this function also serve smooth_lcd and smooth_lcdv renderers,
  55        it implements reference counting */
  56     if(pic_container->smooth)
  57     {
  58       ((SmoothPIC*)pic_container->smooth)->ref_count++;
  59       return error;
  60     }
  61
  62     /* allocate pointer, clear and set global container pointer */
  63     if ( FT_ALLOC ( container, sizeof ( *container ) ) )
  64       return error;
  65     FT_MEM_SET( container, 0, sizeof(*container) );
  66     pic_container->smooth = container;
  67     container->ref_count = 1;
  68
  69     /* initialize pointer table - this is how the module usually expects this data */
  70     FT_Init_Class_ft_grays_raster(&container->ft_grays_raster);
  71 /*Exit:*/
  72     if(error)
  73       ft_smooth_renderer_class_pic_free(library);
  74     return error;
  75   }
  76
  77   /* re-route these init and free functions to the above functions */
  78   FT_Error ft_smooth_lcd_renderer_class_pic_init(FT_Library library)
  79   {
  80     return ft_smooth_renderer_class_pic_init(library);
  81   }
  82   void ft_smooth_lcd_renderer_class_pic_free(FT_Library library)
  83   {
  84     ft_smooth_renderer_class_pic_free(library);
  85   }
  86   FT_Error ft_smooth_lcdv_renderer_class_pic_init(FT_Library library)
  87   {
  88     return ft_smooth_renderer_class_pic_init(library);
  89   }
  90   void ft_smooth_lcdv_renderer_class_pic_free(FT_Library library)
  91   {
  92     ft_smooth_renderer_class_pic_free(library);
  93   }
  94
  95 #endif /* FT_CONFIG_OPTION_PIC */
  96
  97
  98 /* END */