src/raster/rastpic.c

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  rastpic.c                                                              */
   4 /*                                                                         */
   5 /*    The FreeType position independent code services for raster 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 "rastpic.h"
  23 #include "rasterrs.h"
  24
  25 #ifdef FT_CONFIG_OPTION_PIC
  26
  27   /* forward declaration of PIC init functions from ftraster.c */
  28   void
  29   FT_Init_Class_ft_standard_raster( FT_Raster_Funcs*  funcs );
  30
  31   void
  32   ft_raster1_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->raster )
  39     {
  40       RasterPIC* container = (RasterPIC*)pic_container->raster;
  41       if ( --container->ref_count )
  42         return;
  43       FT_FREE( container );
  44       pic_container->raster = NULL;
  45     }
  46   }
  47
  48
  49   FT_Error
  50   ft_raster1_renderer_class_pic_init( FT_Library  library )
  51   {
  52     FT_PIC_Container* pic_container = &library->pic_container;
  53     FT_Error          error         = Raster_Err_Ok;
  54     RasterPIC*        container;
  55     FT_Memory         memory        = library->memory;
  56
  57
  58     /* since this function also serve raster5 renderer,
  59        it implements reference counting */
  60     if ( pic_container->raster )
  61     {
  62       ((RasterPIC*)pic_container->raster)->ref_count++;
  63       return error;
  64     }
  65
  66     /* allocate pointer, clear and set global container pointer */
  67     if ( FT_ALLOC( container, sizeof ( *container ) ) )
  68       return error;
  69     FT_MEM_SET( container, 0, sizeof ( *container ) );
  70     pic_container->raster = container;
  71     container->ref_count = 1;
  72
  73     /* initialize pointer table - this is how the module usually expects this data */
  74     FT_Init_Class_ft_standard_raster( &container->ft_standard_raster );
  75 /*Exit:*/
  76     if( error )
  77       ft_raster1_renderer_class_pic_free( library );
  78     return error;
  79   }
  80
  81   /* re-route these init and free functions to the above functions */
  82   FT_Error
  83   ft_raster5_renderer_class_pic_init( FT_Library  library )
  84   {
  85     return ft_raster1_renderer_class_pic_init( library );
  86   }
  87
  88   void
  89   ft_raster5_renderer_class_pic_free( FT_Library  library )
  90   {
  91     ft_raster1_renderer_class_pic_free( library );
  92   }
  93
  94 #endif /* FT_CONFIG_OPTION_PIC */
  95
  96
  97 /* END */