1 /***************************************************************************/
2 /*                                                                         */
3 /*  ftspic.c                                                               */
4 /*                                                                         */
5 /*    The FreeType position independent code services for smooth module.   */
6 /*                                                                         */
7 /*  Copyright 2009-2015 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 
26 #ifdef FT_CONFIG_OPTION_PIC
27 
28   /* forward declaration of PIC init functions from ftgrays.c */
29   void
30   FT_Init_Class_ft_grays_raster( FT_Raster_Funcs*  funcs );
31 
32 
33   void
ft_smooth_renderer_class_pic_free(FT_Library library)34   ft_smooth_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->smooth )
41     {
42       SmoothPIC*  container = (SmoothPIC*)pic_container->smooth;
43 
44 
45       if ( --container->ref_count )
46         return;
47 
48       FT_FREE( container );
49       pic_container->smooth = NULL;
50     }
51   }
52 
53 
54   FT_Error
ft_smooth_renderer_class_pic_init(FT_Library library)55   ft_smooth_renderer_class_pic_init( FT_Library  library )
56   {
57     FT_PIC_Container*  pic_container = &library->pic_container;
58     FT_Error           error         = FT_Err_Ok;
59     SmoothPIC*         container     = NULL;
60     FT_Memory          memory        = library->memory;
61 
62 
63     /* since this function also serve smooth_lcd and smooth_lcdv renderers,
64        it implements reference counting */
65     if ( pic_container->smooth )
66     {
67       ((SmoothPIC*)pic_container->smooth)->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->smooth = 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_grays_raster( &container->ft_grays_raster );
82 
83     return error;
84   }
85 
86 
87   /* re-route these init and free functions to the above functions */
88   FT_Error
ft_smooth_lcd_renderer_class_pic_init(FT_Library library)89   ft_smooth_lcd_renderer_class_pic_init( FT_Library  library )
90   {
91     return ft_smooth_renderer_class_pic_init( library );
92   }
93 
94 
95   void
ft_smooth_lcd_renderer_class_pic_free(FT_Library library)96   ft_smooth_lcd_renderer_class_pic_free( FT_Library  library )
97   {
98     ft_smooth_renderer_class_pic_free( library );
99   }
100 
101 
102   FT_Error
ft_smooth_lcdv_renderer_class_pic_init(FT_Library library)103   ft_smooth_lcdv_renderer_class_pic_init( FT_Library  library )
104   {
105     return ft_smooth_renderer_class_pic_init( library );
106   }
107 
108 
109   void
ft_smooth_lcdv_renderer_class_pic_free(FT_Library library)110   ft_smooth_lcdv_renderer_class_pic_free( FT_Library  library )
111   {
112     ft_smooth_renderer_class_pic_free( library );
113   }
114 
115 #endif /* FT_CONFIG_OPTION_PIC */
116 
117 
118 /* END */
119