thirdparty/freetype-2.3.12/src/raster/rastpic.c

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  rastpic.c                                                              */
   4 /*                                                                         */
   5 /*    The FreeType position independent code services for raster module.   */
   6 /*                                                                         */
   7 /*  Copyright 2009 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 "rastpic.h"
  23
  24 #ifdef FT_CONFIG_OPTION_PIC
  25
  26   /* forward declaration of PIC init functions from ftraster.c */
  27   void FT_Init_Class_ft_standard_raster(FT_Raster_Funcs*);
  28
  29   void
  30   ft_raster1_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->raster )
  35     {
  36       RasterPIC* container = (RasterPIC*)pic_container->raster;
  37       if(--container->ref_count)
  38         return;
  39       FT_FREE( container );
  40       pic_container->raster = NULL;
  41     }
  42   }
  43
  44
  45   FT_Error
  46   ft_raster1_renderer_class_pic_init(  FT_Library library )
  47   {
  48     FT_PIC_Container* pic_container = &library->pic_container;
  49     FT_Error        error = FT_Err_Ok;
  50     RasterPIC* container;
  51     FT_Memory memory = library->memory;
  52
  53     /* since this function also serve raster5 renderer,
  54        it implements reference counting */
  55     if(pic_container->raster)
  56     {
  57       ((RasterPIC*)pic_container->raster)->ref_count++;
  58       return error;
  59     }
  60
  61     /* allocate pointer, clear and set global container pointer */
  62     if ( FT_ALLOC ( container, sizeof ( *container ) ) )
  63       return error;
  64     FT_MEM_SET( container, 0, sizeof(*container) );
  65     pic_container->raster = container;
  66     container->ref_count = 1;
  67
  68     /* initialize pointer table - this is how the module usually expects this data */
  69     FT_Init_Class_ft_standard_raster(&container->ft_standard_raster);
  70 /*Exit:*/
  71     if(error)
  72       ft_raster1_renderer_class_pic_free(library);
  73     return error;
  74   }
  75
  76   /* re-route these init and free functions to the above functions */
  77   FT_Error ft_raster5_renderer_class_pic_init(FT_Library library)
  78   {
  79     return ft_raster1_renderer_class_pic_init(library);
  80   }
  81   void ft_raster5_renderer_class_pic_free(FT_Library library)
  82   {
  83     ft_raster1_renderer_class_pic_free(library);
  84   }
  85
  86 #endif /* FT_CONFIG_OPTION_PIC */
  87
  88
  89 /* END */