XFA: merge patch from CL 815103002
[pdfium.git] / third_party / 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, 2010, 2012, 2013 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     /* since this function also serves raster5 renderer, */
63     /* it implements reference counting                  */
64     if ( pic_container->raster )
65     {
66       ((RasterPIC*)pic_container->raster)->ref_count++;
67       return error;
68     }
69
70     /* allocate pointer, clear and set global container pointer */
71     if ( FT_ALLOC( container, sizeof ( *container ) ) )
72       return error;
73     FT_MEM_SET( container, 0, sizeof ( *container ) );
74     pic_container->raster = container;
75
76     container->ref_count = 1;
77
78     /* initialize pointer table -                       */
79     /* this is how the module usually expects this data */
80     FT_Init_Class_ft_standard_raster( &container->ft_standard_raster );
81
82     return error;
83   }
84
85
86   /* re-route these init and free functions to the above functions */
87   FT_Error
88   ft_raster5_renderer_class_pic_init( FT_Library  library )
89   {
90     return ft_raster1_renderer_class_pic_init( library );
91   }
92
93
94   void
95   ft_raster5_renderer_class_pic_free( FT_Library  library )
96   {
97     ft_raster1_renderer_class_pic_free( library );
98   }
99
100 #endif /* FT_CONFIG_OPTION_PIC */
101
102
103 /* END */