workbench/libs/mesa/src/gallium/state_trackers/vega/handle.h

   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
  45 extern struct util_hash_table *handle_hash;
  46
  47
  48 struct vg_mask_layer;
  49 struct vg_font;
  50 struct vg_image;
  51 struct vg_paint;
  52 struct path;
  53
  54
  55 extern void
  56 init_handles(void);
  57
  58
  59 extern void
  60 free_handles(void);
  61
  62
  63 extern VGHandle
  64 create_handle(void *object);
  65
  66
  67 extern void
  68 destroy_handle(VGHandle h);
  69
  70
  71 static INLINE VGHandle
  72 object_to_handle(struct vg_object *obj)
  73 {
  74    return obj ? obj->handle : VG_INVALID_HANDLE;
  75 }
  76
  77
  78 static INLINE VGHandle
  79 image_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
  86 static INLINE VGHandle
  87 masklayer_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
  94 static INLINE VGHandle
  95 font_to_handle(struct vg_font *font)
  96 {
  97    return object_to_handle((struct vg_object *) font);
  98 }
  99
 100
 101 static INLINE VGHandle
 102 paint_to_handle(struct vg_paint *paint)
 103 {
 104    return object_to_handle((struct vg_object *) paint);
 105 }
 106
 107
 108 static INLINE VGHandle
 109 path_to_handle(struct path *path)
 110 {
 111    return object_to_handle((struct vg_object *) path);
 112 }
 113
 114
 115 static INLINE void *
 116 handle_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
 129 static INLINE struct vg_font *
 130 handle_to_font(VGHandle h)
 131 {
 132    return (struct vg_font *) handle_to_pointer(h);
 133 }
 134
 135
 136 static INLINE struct vg_image *
 137 handle_to_image(VGHandle h)
 138 {
 139    return (struct vg_image *) handle_to_pointer(h);
 140 }
 141
 142
 143 static INLINE struct vg_mask_layer *
 144 handle_to_masklayer(VGHandle h)
 145 {
 146    return (struct vg_mask_layer *) handle_to_pointer(h);
 147 }
 148
 149
 150 static INLINE struct vg_object *
 151 handle_to_object(VGHandle h)
 152 {
 153    return (struct vg_object *) handle_to_pointer(h);
 154 }
 155
 156
 157 static INLINE struct vg_paint *
 158 handle_to_paint(VGHandle h)
 159 {
 160    return (struct vg_paint *) handle_to_pointer(h);
 161 }
 162
 163
 164 static INLINE struct path *
 165 handle_to_path(VGHandle h)
 166 {
 167    return (struct path *) handle_to_pointer(h);
 168 }
 169
 170
 171 #endif /* HANDLE_H */