handle.h revision 99c67f27d35a4bbbbefada8117d5972c7583cf42 
1/**************************************************************************
2 *
3 * Copyright 2010 VMware, Inc.  All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 **************************************************************************/
26
27
28/**
29 * Convert opaque VG object handles into pointers and vice versa.
30 * XXX This is not yet 64-bit safe!  All VG handles are 32 bits in size.
31 */
32
33
34#ifndef HANDLE_H
35#define HANDLE_H
36
37#include "pipe/p_compiler.h"
38#include "util/u_hash_table.h"
39#include "util/u_pointer.h"
40
41#include "VG/openvg.h"
42#include "vg_context.h"
43
44
45extern struct util_hash_table *handle_hash;
46
47
48struct vg_mask_layer;
49struct vg_font;
50struct vg_image;
51struct vg_paint;
52struct path;
53
54
55extern void
56init_handles(void);
57
58
59extern void
60free_handles(void);
61
62
63extern VGHandle
64create_handle(void *object);
65
66
67extern void
68destroy_handle(VGHandle h);
69
70
71static INLINE VGHandle
72object_to_handle(struct vg_object *obj)
73{
74   return obj ? obj->handle : VG_INVALID_HANDLE;
75}
76
77
78static INLINE VGHandle
79image_to_handle(struct vg_image *img)
80{
81   /* vg_image is derived from vg_object */
82   return object_to_handle((struct vg_object *) img);
83}
84
85
86static INLINE VGHandle
87masklayer_to_handle(struct vg_mask_layer *mask)
88{
89   /* vg_object is derived from vg_object */
90   return object_to_handle((struct vg_object *) mask);
91}
92
93
94static INLINE VGHandle
95font_to_handle(struct vg_font *font)
96{
97   return object_to_handle((struct vg_object *) font);
98}
99
100
101static INLINE VGHandle
102paint_to_handle(struct vg_paint *paint)
103{
104   return object_to_handle((struct vg_object *) paint);
105}
106
107
108static INLINE VGHandle
109path_to_handle(struct path *path)
110{
111   return object_to_handle((struct vg_object *) path);
112}
113
114
115static INLINE void *
116handle_to_pointer(VGHandle h)
117{
118   void *v = util_hash_table_get(handle_hash, intptr_to_pointer(h));
119#ifdef DEBUG
120   if (v) {
121      struct vg_object *obj = (struct vg_object *) v;
122      assert(obj->handle == h);
123   }
124#endif
125   return v;
126}
127
128
129static INLINE struct vg_font *
130handle_to_font(VGHandle h)
131{
132   return (struct vg_font *) handle_to_pointer(h);
133}
134
135
136static INLINE struct vg_image *
137handle_to_image(VGHandle h)
138{
139   return (struct vg_image *) handle_to_pointer(h);
140}
141
142
143static INLINE struct vg_mask_layer *
144handle_to_masklayer(VGHandle h)
145{
146   return (struct vg_mask_layer *) handle_to_pointer(h);
147}
148
149
150static INLINE struct vg_object *
151handle_to_object(VGHandle h)
152{
153   return (struct vg_object *) handle_to_pointer(h);
154}
155
156
157static INLINE struct vg_paint *
158handle_to_paint(VGHandle h)
159{
160   return (struct vg_paint *) handle_to_pointer(h);
161}
162
163
164static INLINE struct path *
165handle_to_path(VGHandle h)
166{
167   return (struct path *) handle_to_pointer(h);
168}
169
170
171#endif /* HANDLE_H */
172