2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 /* This is a general header that includes C language support */
28 #include "SDL_config.h"
31 #ifdef HAVE_SYS_TYPES_H
32 #include <sys/types.h>
37 #if defined(STDC_HEADERS)
42 # if defined(HAVE_STDLIB_H)
44 # elif defined(HAVE_MALLOC_H)
47 # if defined(HAVE_STDDEF_H)
50 # if defined(HAVE_STDARG_H)
55 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
63 #if defined(HAVE_INTTYPES_H)
64 # include <inttypes.h>
65 #elif defined(HAVE_STDINT_H)
75 /* The number of elements in an array */
76 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
77 #define SDL_TABLESIZE(table) SDL_arraysize(table)
79 /* Basic data types */
80 typedef enum SDL_bool
{
86 typedef uint8_t Uint8
;
87 typedef int16_t Sint16
;
88 typedef uint16_t Uint16
;
89 typedef int32_t Sint32
;
90 typedef uint32_t Uint32
;
92 #ifdef SDL_HAS_64BIT_TYPE
93 typedef int64_t Sint64
;
94 #ifndef SYMBIAN32_GCCE
95 typedef uint64_t Uint64
;
98 /* This is really just a hack to prevent the compiler from complaining */
105 /* Make sure the types really have the right sizes */
106 #define SDL_COMPILE_TIME_ASSERT(name, x) \
107 typedef int SDL_dummy_ ## name[(x) * 2 - 1]
109 SDL_COMPILE_TIME_ASSERT(uint8
, sizeof(Uint8
) == 1);
110 SDL_COMPILE_TIME_ASSERT(sint8
, sizeof(Sint8
) == 1);
111 SDL_COMPILE_TIME_ASSERT(uint16
, sizeof(Uint16
) == 2);
112 SDL_COMPILE_TIME_ASSERT(sint16
, sizeof(Sint16
) == 2);
113 SDL_COMPILE_TIME_ASSERT(uint32
, sizeof(Uint32
) == 4);
114 SDL_COMPILE_TIME_ASSERT(sint32
, sizeof(Sint32
) == 4);
115 SDL_COMPILE_TIME_ASSERT(uint64
, sizeof(Uint64
) == 8);
116 SDL_COMPILE_TIME_ASSERT(sint64
, sizeof(Sint64
) == 8);
118 /* Check to make sure enums are the size of ints, for structure packing.
119 For both Watcom C/C++ and Borland C/C++ the compiler option that makes
120 enums having the size of an int must be enabled.
121 This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
123 /* Enable enums always int in CodeWarrior (for MPW use "-enum int") */
125 #pragma enumsalwaysint on
133 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM
) == sizeof(int));
137 #include "begin_code.h"
138 /* Set up for C function definitions, even when using C++ */
144 #define SDL_malloc malloc
146 extern DECLSPEC
void * SDLCALL
SDL_malloc(size_t size
);
150 #define SDL_calloc calloc
152 extern DECLSPEC
void * SDLCALL
SDL_calloc(size_t nmemb
, size_t size
);
156 #define SDL_realloc realloc
158 extern DECLSPEC
void * SDLCALL
SDL_realloc(void *mem
, size_t size
);
162 #define SDL_free free
164 extern DECLSPEC
void SDLCALL
SDL_free(void *mem
);
167 #if defined(HAVE_ALLOCA) && !defined(alloca)
168 # if defined(HAVE_ALLOCA_H)
170 # elif defined(__GNUC__)
171 # define alloca __builtin_alloca
172 # elif defined(_MSC_VER)
174 # define alloca _alloca
175 # elif defined(__WATCOMC__)
177 # elif defined(__BORLANDC__)
179 # elif defined(__DMC__)
181 # elif defined(__AIX__)
183 # elif defined(__MRC__)
184 void *alloca (unsigned);
190 #define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
191 #define SDL_stack_free(data)
193 #define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*(count))
194 #define SDL_stack_free(data) SDL_free(data)
198 #define SDL_getenv getenv
200 extern DECLSPEC
char * SDLCALL
SDL_getenv(const char *name
);
204 #define SDL_putenv putenv
206 extern DECLSPEC
int SDLCALL
SDL_putenv(const char *variable
);
210 #define SDL_qsort qsort
212 extern DECLSPEC
void SDLCALL
SDL_qsort(void *base
, size_t nmemb
, size_t size
,
213 int (*compare
)(const void *, const void *));
219 #define SDL_abs(X) ((X) < 0 ? -(X) : (X))
222 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
223 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
226 #define SDL_isdigit(X) isdigit(X)
227 #define SDL_isspace(X) isspace(X)
228 #define SDL_toupper(X) toupper(X)
229 #define SDL_tolower(X) tolower(X)
231 #define SDL_isdigit(X) (((X) >= '0') && ((X) <= '9'))
232 #define SDL_isspace(X) (((X) == ' ') || ((X) == '\t') || ((X) == '\r') || ((X) == '\n'))
233 #define SDL_toupper(X) (((X) >= 'a') && ((X) <= 'z') ? ('A'+((X)-'a')) : (X))
234 #define SDL_tolower(X) (((X) >= 'A') && ((X) <= 'Z') ? ('a'+((X)-'A')) : (X))
238 #define SDL_memset memset
240 extern DECLSPEC
void * SDLCALL
SDL_memset(void *dst
, int c
, size_t len
);
243 #if defined(__GNUC__) && defined(i386)
244 #define SDL_memset4(dst, val, len) \
247 __asm__ __volatile__ ( \
250 : "=&D" (u0), "=&a" (u1), "=&c" (u2) \
251 : "0" (dst), "1" (val), "2" ((Uint32)(len)) \
256 #define SDL_memset4(dst, val, len) \
258 unsigned _count = (len); \
259 unsigned _n = (_count + 3) / 4; \
260 Uint32 *_p = (Uint32 *)(dst); \
261 Uint32 _val = (val); \
262 switch (_count % 4) { \
263 case 0: do { *_p++ = _val; \
264 case 3: *_p++ = _val; \
265 case 2: *_p++ = _val; \
266 case 1: *_p++ = _val; \
272 /* We can count on memcpy existing on Mac OS X and being well-tuned. */
273 #if defined(__MACH__) && defined(__APPLE__)
274 #define SDL_memcpy(dst, src, len) memcpy(dst, src, len)
275 #elif defined(__GNUC__) && defined(i386)
276 #define SDL_memcpy(dst, src, len) \
279 __asm__ __volatile__ ( \
285 "1:\ttestb $1,%b4\n\t" \
289 : "=&c" (u0), "=&D" (u1), "=&S" (u2) \
290 : "0" ((unsigned)(len)/4), "q" (len), "1" (dst),"2" (src) \
296 #define SDL_memcpy memcpy
297 #elif defined(HAVE_BCOPY)
298 #define SDL_memcpy(d, s, n) bcopy((s), (d), (n))
300 extern DECLSPEC
void * SDLCALL
SDL_memcpy(void *dst
, const void *src
, size_t len
);
304 /* We can count on memcpy existing on Mac OS X and being well-tuned. */
305 #if defined(__MACH__) && defined(__APPLE__)
306 #define SDL_memcpy4(dst, src, len) memcpy(dst, src, (len)*4)
307 #elif defined(__GNUC__) && defined(i386)
308 #define SDL_memcpy4(dst, src, len) \
311 __asm__ __volatile__ ( \
314 : "=&c" (ecx), "=&D" (edi), "=&S" (esi) \
315 : "0" ((unsigned)(len)), "1" (dst), "2" (src) \
320 #define SDL_memcpy4(dst, src, len) SDL_memcpy(dst, src, (len) << 2)
323 #if defined(__GNUC__) && defined(i386)
324 #define SDL_revcpy(dst, src, len) \
327 char *dstp = (char *)(dst); \
328 char *srcp = (char *)(src); \
331 __asm__ __volatile__ ( \
334 : "=&c" (u0), "=&D" (u1), "=&S" (u2) \
336 "1" (dstp+(n-4)), "2" (srcp+(n-4)) \
340 case 3: dstp[2] = srcp[2]; \
341 case 2: dstp[1] = srcp[1]; \
342 case 1: dstp[0] = srcp[0]; \
350 extern DECLSPEC
void * SDLCALL
SDL_revcpy(void *dst
, const void *src
, size_t len
);
354 #define SDL_memmove memmove
355 #elif defined(HAVE_BCOPY)
356 #define SDL_memmove(d, s, n) bcopy((s), (d), (n))
358 #define SDL_memmove(dst, src, len) \
361 SDL_memcpy(dst, src, len); \
363 SDL_revcpy(dst, src, len); \
369 #define SDL_memcmp memcmp
371 extern DECLSPEC
int SDLCALL
SDL_memcmp(const void *s1
, const void *s2
, size_t len
);
375 #define SDL_strlen strlen
377 extern DECLSPEC
size_t SDLCALL
SDL_strlen(const char *string
);
381 #define SDL_strlcpy strlcpy
383 extern DECLSPEC
size_t SDLCALL
SDL_strlcpy(char *dst
, const char *src
, size_t maxlen
);
387 #define SDL_strlcat strlcat
389 extern DECLSPEC
size_t SDLCALL
SDL_strlcat(char *dst
, const char *src
, size_t maxlen
);
393 #define SDL_strdup strdup
395 extern DECLSPEC
char * SDLCALL
SDL_strdup(const char *string
);
399 #define SDL_strrev _strrev
401 extern DECLSPEC
char * SDLCALL
SDL_strrev(char *string
);
405 #define SDL_strupr _strupr
407 extern DECLSPEC
char * SDLCALL
SDL_strupr(char *string
);
411 #define SDL_strlwr _strlwr
413 extern DECLSPEC
char * SDLCALL
SDL_strlwr(char *string
);
417 #define SDL_strchr strchr
418 #elif defined(HAVE_INDEX)
419 #define SDL_strchr index
421 extern DECLSPEC
char * SDLCALL
SDL_strchr(const char *string
, int c
);
425 #define SDL_strrchr strrchr
426 #elif defined(HAVE_RINDEX)
427 #define SDL_strrchr rindex
429 extern DECLSPEC
char * SDLCALL
SDL_strrchr(const char *string
, int c
);
433 #define SDL_strstr strstr
435 extern DECLSPEC
char * SDLCALL
SDL_strstr(const char *haystack
, const char *needle
);
439 #define SDL_itoa itoa
441 #define SDL_itoa(value, string, radix) SDL_ltoa((long)value, string, radix)
445 #define SDL_ltoa _ltoa
447 extern DECLSPEC
char * SDLCALL
SDL_ltoa(long value
, char *string
, int radix
);
451 #define SDL_uitoa _uitoa
453 #define SDL_uitoa(value, string, radix) SDL_ultoa((long)value, string, radix)
457 #define SDL_ultoa _ultoa
459 extern DECLSPEC
char * SDLCALL
SDL_ultoa(unsigned long value
, char *string
, int radix
);
463 #define SDL_strtol strtol
465 extern DECLSPEC
long SDLCALL
SDL_strtol(const char *string
, char **endp
, int base
);
469 #define SDL_strtoul strtoul
471 extern DECLSPEC
unsigned long SDLCALL
SDL_strtoul(const char *string
, char **endp
, int base
);
474 #ifdef SDL_HAS_64BIT_TYPE
477 #define SDL_lltoa _i64toa
479 extern DECLSPEC
char* SDLCALL
SDL_lltoa(Sint64 value
, char *string
, int radix
);
483 #define SDL_ulltoa _ui64toa
485 extern DECLSPEC
char* SDLCALL
SDL_ulltoa(Uint64 value
, char *string
, int radix
);
489 #define SDL_strtoll strtoll
491 extern DECLSPEC Sint64 SDLCALL
SDL_strtoll(const char *string
, char **endp
, int base
);
495 #define SDL_strtoull strtoull
497 extern DECLSPEC Uint64 SDLCALL
SDL_strtoull(const char *string
, char **endp
, int base
);
500 #endif /* SDL_HAS_64BIT_TYPE */
503 #define SDL_strtod strtod
505 extern DECLSPEC
double SDLCALL
SDL_strtod(const char *string
, char **endp
);
509 #define SDL_atoi atoi
511 #define SDL_atoi(X) SDL_strtol(X, NULL, 0)
515 #define SDL_atof atof
517 #define SDL_atof(X) SDL_strtod(X, NULL)
521 #define SDL_strcmp strcmp
523 extern DECLSPEC
int SDLCALL
SDL_strcmp(const char *str1
, const char *str2
);
527 #define SDL_strncmp strncmp
529 extern DECLSPEC
int SDLCALL
SDL_strncmp(const char *str1
, const char *str2
, size_t maxlen
);
532 #ifdef HAVE_STRCASECMP
533 #define SDL_strcasecmp strcasecmp
534 #elif defined(HAVE__STRICMP)
535 #define SDL_strcasecmp _stricmp
537 extern DECLSPEC
int SDLCALL
SDL_strcasecmp(const char *str1
, const char *str2
);
540 #ifdef HAVE_STRNCASECMP
541 #define SDL_strncasecmp strncasecmp
542 #elif defined(HAVE__STRNICMP)
543 #define SDL_strncasecmp _strnicmp
545 extern DECLSPEC
int SDLCALL
SDL_strncasecmp(const char *str1
, const char *str2
, size_t maxlen
);
549 #define SDL_sscanf sscanf
551 extern DECLSPEC
int SDLCALL
SDL_sscanf(const char *text
, const char *fmt
, ...);
555 #define SDL_snprintf snprintf
557 extern DECLSPEC
int SDLCALL
SDL_snprintf(char *text
, size_t maxlen
, const char *fmt
, ...);
560 #ifdef HAVE_VSNPRINTF
561 #define SDL_vsnprintf vsnprintf
563 extern DECLSPEC
int SDLCALL
SDL_vsnprintf(char *text
, size_t maxlen
, const char *fmt
, va_list ap
);
566 /* The SDL implementation of iconv() returns these error codes */
567 #define SDL_ICONV_ERROR (size_t)-1
568 #define SDL_ICONV_E2BIG (size_t)-2
569 #define SDL_ICONV_EILSEQ (size_t)-3
570 #define SDL_ICONV_EINVAL (size_t)-4
573 #define SDL_iconv_t iconv_t
574 #define SDL_iconv_open iconv_open
575 #define SDL_iconv_close iconv_close
577 typedef struct _SDL_iconv_t
*SDL_iconv_t
;
578 extern DECLSPEC SDL_iconv_t SDLCALL
SDL_iconv_open(const char *tocode
, const char *fromcode
);
579 extern DECLSPEC
int SDLCALL
SDL_iconv_close(SDL_iconv_t cd
);
581 extern DECLSPEC
size_t SDLCALL
SDL_iconv(SDL_iconv_t cd
, const char **inbuf
, size_t *inbytesleft
, char **outbuf
, size_t *outbytesleft
);
582 /* This function converts a string between encodings in one pass, returning a
583 string that must be freed with SDL_free() or NULL on error.
585 extern DECLSPEC
char * SDLCALL
SDL_iconv_string(const char *tocode
, const char *fromcode
, const char *inbuf
, size_t inbytesleft
);
586 #define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
587 #define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2", "UTF-8", S, SDL_strlen(S)+1)
588 #define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4", "UTF-8", S, SDL_strlen(S)+1)
590 /* Ends C function definitions when using C++ */
594 #include "close_code.h"
596 #endif /* _SDL_stdinc_h */