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1 /***************************************************************************/
2 /*                                                                         */
3 /*  ftspic.c                                                               */
4 /*                                                                         */
5 /*    The FreeType position independent code services for smooth module.   */
6 /*                                                                         */
7 /*  Copyright 2009, 2010, 2012 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 #ifdef FT_CONFIG_OPTION_PIC
26
27   /* forward declaration of PIC init functions from ftgrays.c */
28   void
29   FT_Init_Class_ft_grays_raster( FT_Raster_Funcs*  funcs );
30
31   void
32   ft_smooth_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->smooth )
39     {
40       SmoothPIC*  container = (SmoothPIC*)pic_container->smooth;
41
42
43       if ( --container->ref_count )
44         return;
45       FT_FREE( container );
46       pic_container->smooth = NULL;
47     }
48   }
49
50
51   FT_Error
52   ft_smooth_renderer_class_pic_init( FT_Library  library )
53   {
54     FT_PIC_Container*  pic_container = &library->pic_container;
55     FT_Error           error         = Smooth_Err_Ok;
56     SmoothPIC*         container     = NULL;
57     FT_Memory          memory        = library->memory;
58
59
60     /* since this function also serve smooth_lcd and smooth_lcdv renderers,
61        it implements reference counting */
62     if ( pic_container->smooth )
63     {
64       ((SmoothPIC*)pic_container->smooth)->ref_count++;
65       return error;
66     }
67
68     /* allocate pointer, clear and set global container pointer */
69     if ( FT_ALLOC ( container, sizeof ( *container ) ) )
70       return error;
71     FT_MEM_SET( container, 0, sizeof ( *container ) );
72     pic_container->smooth = container;
73     container->ref_count = 1;
74
75     /* initialize pointer table - this is how the module usually expects this data */
76     FT_Init_Class_ft_grays_raster( &container->ft_grays_raster );
77 /*Exit:*/
78     if ( error )
79       ft_smooth_renderer_class_pic_free( library );
80     return error;
81   }
82
83   /* re-route these init and free functions to the above functions */
84   FT_Error ft_smooth_lcd_renderer_class_pic_init( FT_Library  library )
85   {
86     return ft_smooth_renderer_class_pic_init( library );
87   }
88
89   void ft_smooth_lcd_renderer_class_pic_free( FT_Library  library )
90   {
91     ft_smooth_renderer_class_pic_free( library );
92   }
93
94   FT_Error ft_smooth_lcdv_renderer_class_pic_init( FT_Library  library )
95   {
96     return ft_smooth_renderer_class_pic_init( library );
97   }
98
99   void ft_smooth_lcdv_renderer_class_pic_free( FT_Library  library )
100   {
101     ft_smooth_renderer_class_pic_free( library );
102   }
103
104 #endif /* FT_CONFIG_OPTION_PIC */
105
106
107 /* END */