1 #ifndef __khrplatform_h_
2 #define __khrplatform_h_
3 
4 /*
5 ** Copyright (c) 2008-2009 The Khronos Group Inc.
6 **
7 ** Permission is hereby granted, free of charge, to any person obtaining a
8 ** copy of this software and/or associated documentation files (the
9 ** "Materials"), to deal in the Materials without restriction, including
10 ** without limitation the rights to use, copy, modify, merge, publish,
11 ** distribute, sublicense, and/or sell copies of the Materials, and to
12 ** permit persons to whom the Materials are furnished to do so, subject to
13 ** the following conditions:
14 **
15 ** The above copyright notice and this permission notice shall be included
16 ** in all copies or substantial portions of the Materials.
17 **
18 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
22 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
25 */
26 
27 /* Khronos platform-specific types and definitions.
28  *
29  * $Revision: 9356 $ on $Date: 2009-10-21 02:52:25 -0700 (Wed, 21 Oct 2009) $
30  *
31  * Adopters may modify this file to suit their platform. Adopters are
32  * encouraged to submit platform specific modifications to the Khronos
33  * group so that they can be included in future versions of this file.
34  * Please submit changes by sending them to the public Khronos Bugzilla
35  * (http://khronos.org/bugzilla) by filing a bug against product
36  * "Khronos (general)" component "Registry".
37  *
38  * A predefined template which fills in some of the bug fields can be
39  * reached using http://tinyurl.com/khrplatform-h-bugreport, but you
40  * must create a Bugzilla login first.
41  *
42  *
43  * See the Implementer's Guidelines for information about where this file
44  * should be located on your system and for more details of its use:
45  *    http://www.khronos.org/registry/implementers_guide.pdf
46  *
47  * This file should be included as
48  *        #include <KHR/khrplatform.h>
49  * by Khronos client API header files that use its types and defines.
50  *
51  * The types in khrplatform.h should only be used to define API-specific types.
52  *
53  * Types defined in khrplatform.h:
54  *    khronos_int8_t              signed   8  bit
55  *    khronos_uint8_t             unsigned 8  bit
56  *    khronos_int16_t             signed   16 bit
57  *    khronos_uint16_t            unsigned 16 bit
58  *    khronos_int32_t             signed   32 bit
59  *    khronos_uint32_t            unsigned 32 bit
60  *    khronos_int64_t             signed   64 bit
61  *    khronos_uint64_t            unsigned 64 bit
62  *    khronos_intptr_t            signed   same number of bits as a pointer
63  *    khronos_uintptr_t           unsigned same number of bits as a pointer
64  *    khronos_ssize_t             signed   size
65  *    khronos_usize_t             unsigned size
66  *    khronos_float_t             signed   32 bit floating point
67  *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
68  *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
69  *                                         nanoseconds
70  *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
71  *    khronos_boolean_enum_t      enumerated boolean type. This should
72  *      only be used as a base type when a client API's boolean type is
73  *      an enum. Client APIs which use an integer or other type for
74  *      booleans cannot use this as the base type for their boolean.
75  *
76  * Tokens defined in khrplatform.h:
77  *
78  *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
79  *
80  *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
81  *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
82  *
83  * Calling convention macros defined in this file:
84  *    KHRONOS_APICALL
85  *    KHRONOS_APIENTRY
86  *    KHRONOS_APIATTRIBUTES
87  *
88  * These may be used in function prototypes as:
89  *
90  *      KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
91  *                                  int arg1,
92  *                                  int arg2) KHRONOS_APIATTRIBUTES;
93  */
94 
95 /*-------------------------------------------------------------------------
96  * Definition of KHRONOS_APICALL
97  *-------------------------------------------------------------------------
98  * This precedes the return type of the function in the function prototype.
99  */
100 #if defined(_WIN32) && !defined(__SCITECH_SNAP__)
101 #   define KHRONOS_APICALL __declspec(dllimport)
102 #elif defined (__SYMBIAN32__)
103 #   define KHRONOS_APICALL IMPORT_C
104 #elif defined(ANDROID)
105 #   define KHRONOS_APICALL __attribute__((visibility("default")))
106 #else
107 #   define KHRONOS_APICALL
108 #endif
109 
110 /*-------------------------------------------------------------------------
111  * Definition of KHRONOS_APIENTRY
112  *-------------------------------------------------------------------------
113  * This follows the return type of the function  and precedes the function
114  * name in the function prototype.
115  */
116 #if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
117     /* Win32 but not WinCE */
118 #   define KHRONOS_APIENTRY __stdcall
119 #else
120 #   define KHRONOS_APIENTRY
121 #endif
122 
123 /*-------------------------------------------------------------------------
124  * Definition of KHRONOS_APIATTRIBUTES
125  *-------------------------------------------------------------------------
126  * This follows the closing parenthesis of the function prototype arguments.
127  */
128 #if defined (__ARMCC_2__)
129 #define KHRONOS_APIATTRIBUTES __softfp
130 #else
131 #define KHRONOS_APIATTRIBUTES
132 #endif
133 
134 /*-------------------------------------------------------------------------
135  * basic type definitions
136  *-----------------------------------------------------------------------*/
137 #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
138 
139 
140 /*
141  * Using <stdint.h>
142  */
143 #include <stdint.h>
144 typedef int32_t                 khronos_int32_t;
145 typedef uint32_t                khronos_uint32_t;
146 typedef int64_t                 khronos_int64_t;
147 typedef uint64_t                khronos_uint64_t;
148 #define KHRONOS_SUPPORT_INT64   1
149 #define KHRONOS_SUPPORT_FLOAT   1
150 
151 #elif defined(__VMS ) || defined(__sgi)
152 
153 /*
154  * Using <inttypes.h>
155  */
156 #include <inttypes.h>
157 typedef int32_t                 khronos_int32_t;
158 typedef uint32_t                khronos_uint32_t;
159 typedef int64_t                 khronos_int64_t;
160 typedef uint64_t                khronos_uint64_t;
161 #define KHRONOS_SUPPORT_INT64   1
162 #define KHRONOS_SUPPORT_FLOAT   1
163 
164 #elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
165 
166 /*
167  * Win32
168  */
169 typedef __int32                 khronos_int32_t;
170 typedef unsigned __int32        khronos_uint32_t;
171 typedef __int64                 khronos_int64_t;
172 typedef unsigned __int64        khronos_uint64_t;
173 #define KHRONOS_SUPPORT_INT64   1
174 #define KHRONOS_SUPPORT_FLOAT   1
175 
176 #elif defined(__sun__) || defined(__digital__)
177 
178 /*
179  * Sun or Digital
180  */
181 typedef int                     khronos_int32_t;
182 typedef unsigned int            khronos_uint32_t;
183 #if defined(__arch64__) || defined(_LP64)
184 typedef long int                khronos_int64_t;
185 typedef unsigned long int       khronos_uint64_t;
186 #else
187 typedef long long int           khronos_int64_t;
188 typedef unsigned long long int  khronos_uint64_t;
189 #endif /* __arch64__ */
190 #define KHRONOS_SUPPORT_INT64   1
191 #define KHRONOS_SUPPORT_FLOAT   1
192 
193 #elif 0
194 
195 /*
196  * Hypothetical platform with no float or int64 support
197  */
198 typedef int                     khronos_int32_t;
199 typedef unsigned int            khronos_uint32_t;
200 #define KHRONOS_SUPPORT_INT64   0
201 #define KHRONOS_SUPPORT_FLOAT   0
202 
203 #else
204 
205 /*
206  * Generic fallback
207  */
208 #include <stdint.h>
209 typedef int32_t                 khronos_int32_t;
210 typedef uint32_t                khronos_uint32_t;
211 typedef int64_t                 khronos_int64_t;
212 typedef uint64_t                khronos_uint64_t;
213 #define KHRONOS_SUPPORT_INT64   1
214 #define KHRONOS_SUPPORT_FLOAT   1
215 
216 #endif
217 
218 
219 /*
220  * Types that are (so far) the same on all platforms
221  */
222 typedef signed   char          khronos_int8_t;
223 typedef unsigned char          khronos_uint8_t;
224 typedef signed   short int     khronos_int16_t;
225 typedef unsigned short int     khronos_uint16_t;
226 typedef signed   long  int     khronos_intptr_t;
227 typedef unsigned long  int     khronos_uintptr_t;
228 typedef signed   long  int     khronos_ssize_t;
229 typedef unsigned long  int     khronos_usize_t;
230 
231 #if KHRONOS_SUPPORT_FLOAT
232 /*
233  * Float type
234  */
235 typedef          float         khronos_float_t;
236 #endif
237 
238 #if KHRONOS_SUPPORT_INT64
239 /* Time types
240  *
241  * These types can be used to represent a time interval in nanoseconds or
242  * an absolute Unadjusted System Time.  Unadjusted System Time is the number
243  * of nanoseconds since some arbitrary system event (e.g. since the last
244  * time the system booted).  The Unadjusted System Time is an unsigned
245  * 64 bit value that wraps back to 0 every 584 years.  Time intervals
246  * may be either signed or unsigned.
247  */
248 typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
249 typedef khronos_int64_t        khronos_stime_nanoseconds_t;
250 #endif
251 
252 /*
253  * Dummy value used to pad enum types to 32 bits.
254  */
255 #ifndef KHRONOS_MAX_ENUM
256 #define KHRONOS_MAX_ENUM 0x7FFFFFFF
257 #endif
258 
259 /*
260  * Enumerated boolean type
261  *
262  * Values other than zero should be considered to be true.  Therefore
263  * comparisons should not be made against KHRONOS_TRUE.
264  */
265 typedef enum {
266     KHRONOS_FALSE = 0,
267     KHRONOS_TRUE  = 1,
268     KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
269 } khronos_boolean_enum_t;
270 
271 #endif /* __khrplatform_h_ */
272