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_debug.h"
  39 #include "util/u_hash_table.h"
  40 #include "util/u_pointer.h"
  41
  42 #include "VG/openvg.h"
  43 #include "vg_context.h"
  44
  45
  46 extern struct util_hash_table *handle_hash;
  47
  48
  49 struct vg_mask_layer;
  50 struct vg_font;
  51 struct vg_image;
  52 struct vg_paint;
  53 struct path;
  54
  55
  56 extern void
  57 init_handles(void);
  58
  59
  60 extern void
  61 free_handles(void);
  62
  63
  64 extern VGHandle
  65 create_handle(void *object);
  66
  67
  68 extern void
  69 destroy_handle(VGHandle h);
  70
  71
  72 static INLINE VGHandle
  73 object_to_handle(struct vg_object *obj)
  74 {
  75    return obj ? obj->handle : VG_INVALID_HANDLE;
  76 }
  77
  78
  79 static INLINE VGHandle
  80 image_to_handle(struct vg_image *img)
  81 {
  82    /* vg_image is derived from vg_object */
  83    return object_to_handle((struct vg_object *) img);
  84 }
  85
  86
  87 static INLINE VGHandle
  88 masklayer_to_handle(struct vg_mask_layer *mask)
  89 {
  90    /* vg_object is derived from vg_object */
  91    return object_to_handle((struct vg_object *) mask);
  92 }
  93
  94
  95 static INLINE VGHandle
  96 font_to_handle(struct vg_font *font)
  97 {
  98    return object_to_handle((struct vg_object *) font);
  99 }
 100
 101
 102 static INLINE VGHandle
 103 paint_to_handle(struct vg_paint *paint)
 104 {
 105    return object_to_handle((struct vg_object *) paint);
 106 }
 107
 108
 109 static INLINE VGHandle
 110 path_to_handle(struct path *path)
 111 {
 112    return object_to_handle((struct vg_object *) path);
 113 }
 114
 115
 116 static INLINE void *
 117 handle_to_pointer(VGHandle h)
 118 {
 119    void *v = util_hash_table_get(handle_hash, intptr_to_pointer(h));
 120 #ifdef DEBUG
 121    if (v) {
 122       struct vg_object *obj = (struct vg_object *) v;
 123       assert(obj->handle == h);
 124    }
 125 #endif
 126    return v;
 127 }
 128
 129
 130 static INLINE struct vg_font *
 131 handle_to_font(VGHandle h)
 132 {
 133    return (struct vg_font *) handle_to_pointer(h);
 134 }
 135
 136
 137 static INLINE struct vg_image *
 138 handle_to_image(VGHandle h)
 139 {
 140    return (struct vg_image *) handle_to_pointer(h);
 141 }
 142
 143
 144 static INLINE struct vg_mask_layer *
 145 handle_to_masklayer(VGHandle h)
 146 {
 147    return (struct vg_mask_layer *) handle_to_pointer(h);
 148 }
 149
 150
 151 static INLINE struct vg_object *
 152 handle_to_object(VGHandle h)
 153 {
 154    return (struct vg_object *) handle_to_pointer(h);
 155 }
 156
 157
 158 static INLINE struct vg_paint *
 159 handle_to_paint(VGHandle h)
 160 {
 161    return (struct vg_paint *) handle_to_pointer(h);
 162 }
 163
 164
 165 static INLINE struct path *
 166 handle_to_path(VGHandle h)
 167 {
 168    return (struct path *) handle_to_pointer(h);
 169 }
 170
 171
 172 #endif /* HANDLE_H */