1 /**************************************************************************
2  *
3  * Copyright 2008 VMware, Inc.
4  * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
5  * Copyright 2010-2011 LunarG, Inc.
6  * All Rights Reserved.
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a
9  * copy of this software and associated documentation files (the
10  * "Software"), to deal in the Software without restriction, including
11  * without limitation the rights to use, copy, modify, merge, publish,
12  * distribute, sub license, and/or sell copies of the Software, and to
13  * permit persons to whom the Software is furnished to do so, subject to
14  * the following conditions:
15  *
16  * The above copyright notice and this permission notice (including the
17  * next paragraph) shall be included in all copies or substantial portions
18  * of the Software.
19  *
20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
23  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26  * DEALINGS IN THE SOFTWARE.
27  *
28  **************************************************************************/
29 
30 
31 #ifndef EGLDRIVER_INCLUDED
32 #define EGLDRIVER_INCLUDED
33 
34 
35 #include "c99_compat.h"
36 
37 #include "egltypedefs.h"
38 #include "eglapi.h"
39 #include <stddef.h>
40 
41 
42 #ifdef __cplusplus
43 extern "C" {
44 #endif
45 
46 /**
47  * Define an inline driver typecast function.
48  *
49  * Note that this macro defines a function and should not be ended with a
50  * semicolon when used.
51  */
52 #define _EGL_DRIVER_TYPECAST(drvtype, egltype, code)           \
53    static inline struct drvtype *drvtype(const egltype *obj)   \
54    { return (struct drvtype *) code; }
55 
56 
57 /**
58  * Define the driver typecast functions for _EGLDriver, _EGLDisplay,
59  * _EGLContext, _EGLSurface, and _EGLConfig.
60  *
61  * Note that this macro defines several functions and should not be ended with
62  * a semicolon when used.
63  */
64 #define _EGL_DRIVER_STANDARD_TYPECASTS(drvname)                            \
65    _EGL_DRIVER_TYPECAST(drvname ## _driver, _EGLDriver, obj)               \
66    /* note that this is not a direct cast */                               \
67    _EGL_DRIVER_TYPECAST(drvname ## _display, _EGLDisplay, obj->DriverData) \
68    _EGL_DRIVER_TYPECAST(drvname ## _context, _EGLContext, obj)             \
69    _EGL_DRIVER_TYPECAST(drvname ## _surface, _EGLSurface, obj)             \
70    _EGL_DRIVER_TYPECAST(drvname ## _config, _EGLConfig, obj)
71 
72 
73 /**
74  * Base class for device drivers.
75  */
76 struct _egl_driver
77 {
78    const char *Name;  /**< name of this driver */
79 
80    _EGLAPI API;  /**< EGL API dispatch table */
81 };
82 
83 
84 extern _EGLDriver*
85 _eglBuiltInDriver(void);
86 
87 
88 extern _EGLDriver *
89 _eglMatchDriver(_EGLDisplay *dpy);
90 
91 
92 extern __eglMustCastToProperFunctionPointerType
93 _eglGetDriverProc(const char *procname);
94 
95 
96 extern void
97 _eglUnloadDrivers(void);
98 
99 
100 /* defined in eglfallbacks.c */
101 extern void
102 _eglInitDriverFallbacks(_EGLDriver *drv);
103 
104 
105 extern void
106 _eglSearchPathForEach(EGLBoolean (*callback)(const char *, size_t, void *),
107                       void *callback_data);
108 
109 
110 #ifdef __cplusplus
111 }
112 #endif
113 
114 
115 #endif /* EGLDRIVER_INCLUDED */
116