sdk/lib/3rdparty/freetype/src/raster/rastpic.c

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  rastpic.c                                                              */
   4 /*                                                                         */
   5 /*    The FreeType position independent code services for raster module.   */
   6 /*                                                                         */
   7 /*  Copyright 2009-2018 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
  26 #ifdef FT_CONFIG_OPTION_PIC
  27
  28   /* forward declaration of PIC init functions from ftraster.c */
  29   void
  30   FT_Init_Class_ft_standard_raster( FT_Raster_Funcs*  funcs );
  31
  32
  33   void
  34   ft_raster1_renderer_class_pic_free( FT_Library  library )
  35   {
  36     FT_PIC_Container*  pic_container = &library->pic_container;
  37     FT_Memory          memory        = library->memory;
  38
  39
  40     if ( pic_container->raster )
  41     {
  42       RasterPIC*  container = (RasterPIC*)pic_container->raster;
  43
  44
  45       if ( --container->ref_count )
  46         return;
  47       FT_FREE( container );
  48       pic_container->raster = NULL;
  49     }
  50   }
  51
  52
  53   FT_Error
  54   ft_raster1_renderer_class_pic_init( FT_Library  library )
  55   {
  56     FT_PIC_Container*  pic_container = &library->pic_container;
  57     FT_Error           error         = FT_Err_Ok;
  58     RasterPIC*         container     = NULL;
  59     FT_Memory          memory        = library->memory;
  60
  61
  62     /* XXX: since this function also served the no longer available  */
  63     /*      raster5 renderer it uses reference counting, which could */
  64     /*      be removed now                                           */
  65     if ( pic_container->raster )
  66     {
  67       ((RasterPIC*)pic_container->raster)->ref_count++;
  68       return error;
  69     }
  70
  71     /* allocate pointer, clear and set global container pointer */
  72     if ( FT_ALLOC( container, sizeof ( *container ) ) )
  73       return error;
  74     FT_MEM_SET( container, 0, sizeof ( *container ) );
  75     pic_container->raster = container;
  76
  77     container->ref_count = 1;
  78
  79     /* initialize pointer table -                       */
  80     /* this is how the module usually expects this data */
  81     FT_Init_Class_ft_standard_raster( &container->ft_standard_raster );
  82
  83     return error;
  84   }
  85
  86 #endif /* FT_CONFIG_OPTION_PIC */
  87
  88
  89 /* END */