Mercurial > sdl-ios-xcode
annotate src/SDL.c @ 1358:c71e05b4dc2e
More header massaging... works great on Windows. ;-)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 10 Feb 2006 06:48:43 +0000 |
| parents | 604d73db6802 |
| children | 19418e4422cb |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* Initialization code for SDL */ | |
| 24 | |
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25 #ifdef ENABLE_PTH |
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26 #include <pth.h> |
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27 #endif |
| 0 | 28 |
| 29 #include "SDL.h" | |
| 30 #include "SDL_fatal.h" | |
| 31 #ifndef DISABLE_VIDEO | |
| 32 #include "SDL_leaks.h" | |
| 33 #endif | |
| 34 | |
| 35 /* Initialization/Cleanup routines */ | |
| 36 #ifndef DISABLE_JOYSTICK | |
| 37 extern int SDL_JoystickInit(void); | |
| 38 extern void SDL_JoystickQuit(void); | |
| 39 #endif | |
| 40 #ifndef DISABLE_CDROM | |
| 41 extern int SDL_CDROMInit(void); | |
| 42 extern void SDL_CDROMQuit(void); | |
| 43 #endif | |
| 44 #ifndef DISABLE_TIMERS | |
| 45 extern void SDL_StartTicks(void); | |
| 46 extern int SDL_TimerInit(void); | |
| 47 extern void SDL_TimerQuit(void); | |
| 48 #endif | |
| 49 | |
| 50 /* The current SDL version */ | |
| 51 static SDL_version version = | |
| 52 { SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL }; | |
| 53 | |
| 54 /* The initialized subsystems */ | |
| 55 static Uint32 SDL_initialized = 0; | |
| 56 static Uint32 ticks_started = 0; | |
| 57 | |
| 58 #ifdef CHECK_LEAKS | |
| 59 int surfaces_allocated = 0; | |
| 60 #endif | |
| 61 | |
| 62 int SDL_InitSubSystem(Uint32 flags) | |
| 63 { | |
| 64 #ifndef DISABLE_VIDEO | |
| 65 /* Initialize the video/event subsystem */ | |
| 66 if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) { | |
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67 if ( SDL_VideoInit(SDL_getenv("SDL_VIDEODRIVER"), |
| 0 | 68 (flags&SDL_INIT_EVENTTHREAD)) < 0 ) { |
| 69 return(-1); | |
| 70 } | |
| 71 SDL_initialized |= SDL_INIT_VIDEO; | |
| 72 } | |
| 73 #else | |
| 74 if ( flags & SDL_INIT_VIDEO ) { | |
| 75 SDL_SetError("SDL not built with video support"); | |
| 76 return(-1); | |
| 77 } | |
| 78 #endif | |
| 79 | |
| 80 #ifndef DISABLE_AUDIO | |
| 81 /* Initialize the audio subsystem */ | |
| 82 if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) { | |
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83 if ( SDL_AudioInit(SDL_getenv("SDL_AUDIODRIVER")) < 0 ) { |
| 0 | 84 return(-1); |
| 85 } | |
| 86 SDL_initialized |= SDL_INIT_AUDIO; | |
| 87 } | |
| 88 #else | |
| 89 if ( flags & SDL_INIT_AUDIO ) { | |
| 90 SDL_SetError("SDL not built with audio support"); | |
| 91 return(-1); | |
| 92 } | |
| 93 #endif | |
| 94 | |
| 95 #ifndef DISABLE_TIMERS | |
| 96 /* Initialize the timer subsystem */ | |
| 97 if ( ! ticks_started ) { | |
| 98 SDL_StartTicks(); | |
| 99 ticks_started = 1; | |
| 100 } | |
| 101 if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) { | |
| 102 if ( SDL_TimerInit() < 0 ) { | |
| 103 return(-1); | |
| 104 } | |
| 105 SDL_initialized |= SDL_INIT_TIMER; | |
| 106 } | |
| 107 #else | |
| 108 if ( flags & SDL_INIT_TIMER ) { | |
| 109 SDL_SetError("SDL not built with timer support"); | |
| 110 return(-1); | |
| 111 } | |
| 112 #endif | |
| 113 | |
| 114 #ifndef DISABLE_JOYSTICK | |
| 115 /* Initialize the joystick subsystem */ | |
| 116 if ( (flags & SDL_INIT_JOYSTICK) && | |
| 117 !(SDL_initialized & SDL_INIT_JOYSTICK) ) { | |
| 118 if ( SDL_JoystickInit() < 0 ) { | |
| 119 return(-1); | |
| 120 } | |
| 121 SDL_initialized |= SDL_INIT_JOYSTICK; | |
| 122 } | |
| 123 #else | |
| 124 if ( flags & SDL_INIT_JOYSTICK ) { | |
| 125 SDL_SetError("SDL not built with joystick support"); | |
| 126 return(-1); | |
| 127 } | |
| 128 #endif | |
| 129 | |
| 130 #ifndef DISABLE_CDROM | |
| 131 /* Initialize the CD-ROM subsystem */ | |
| 132 if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) { | |
| 133 if ( SDL_CDROMInit() < 0 ) { | |
| 134 return(-1); | |
| 135 } | |
| 136 SDL_initialized |= SDL_INIT_CDROM; | |
| 137 } | |
| 138 #else | |
| 139 if ( flags & SDL_INIT_CDROM ) { | |
| 140 SDL_SetError("SDL not built with cdrom support"); | |
| 141 return(-1); | |
| 142 } | |
| 143 #endif | |
| 144 return(0); | |
| 145 } | |
| 146 | |
| 147 int SDL_Init(Uint32 flags) | |
| 148 { | |
| 397 | 149 #if !defined(DISABLE_THREADS) && defined(ENABLE_PTH) |
| 150 if (!pth_init()) { | |
| 151 return -1; | |
| 152 } | |
| 153 #endif | |
| 154 | |
| 0 | 155 /* Clear the error message */ |
| 156 SDL_ClearError(); | |
| 157 | |
| 158 /* Initialize the desired subsystems */ | |
| 159 if ( SDL_InitSubSystem(flags) < 0 ) { | |
| 160 return(-1); | |
| 161 } | |
| 162 | |
| 163 /* Everything is initialized */ | |
| 164 if ( !(flags & SDL_INIT_NOPARACHUTE) ) { | |
| 165 SDL_InstallParachute(); | |
| 166 } | |
| 167 return(0); | |
| 168 } | |
| 169 | |
| 170 void SDL_QuitSubSystem(Uint32 flags) | |
| 171 { | |
| 172 /* Shut down requested initialized subsystems */ | |
| 173 #ifndef DISABLE_CDROM | |
| 174 if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) { | |
| 175 SDL_CDROMQuit(); | |
| 176 SDL_initialized &= ~SDL_INIT_CDROM; | |
| 177 } | |
| 178 #endif | |
| 179 #ifndef DISABLE_JOYSTICK | |
| 180 if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) { | |
| 181 SDL_JoystickQuit(); | |
| 182 SDL_initialized &= ~SDL_INIT_JOYSTICK; | |
| 183 } | |
| 184 #endif | |
| 185 #ifndef DISABLE_TIMERS | |
| 186 if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) { | |
| 187 SDL_TimerQuit(); | |
| 188 SDL_initialized &= ~SDL_INIT_TIMER; | |
| 189 } | |
| 190 #endif | |
| 191 #ifndef DISABLE_AUDIO | |
| 192 if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) { | |
| 193 SDL_AudioQuit(); | |
| 194 SDL_initialized &= ~SDL_INIT_AUDIO; | |
| 195 } | |
| 196 #endif | |
| 197 #ifndef DISABLE_VIDEO | |
| 198 if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) { | |
| 199 SDL_VideoQuit(); | |
| 200 SDL_initialized &= ~SDL_INIT_VIDEO; | |
| 201 } | |
| 202 #endif | |
| 203 } | |
| 204 | |
| 205 Uint32 SDL_WasInit(Uint32 flags) | |
| 206 { | |
| 207 if ( ! flags ) { | |
| 208 flags = SDL_INIT_EVERYTHING; | |
| 209 } | |
| 210 return (SDL_initialized&flags); | |
| 211 } | |
| 212 | |
| 213 void SDL_Quit(void) | |
| 214 { | |
| 215 /* Quit all subsystems */ | |
| 1190 | 216 #ifdef DEBUG_BUILD |
| 217 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n"); fflush(stdout); | |
| 218 #endif | |
| 0 | 219 SDL_QuitSubSystem(SDL_INIT_EVERYTHING); |
| 220 | |
| 221 #ifdef CHECK_LEAKS | |
| 1190 | 222 #ifdef DEBUG_BUILD |
| 223 printf("[SDL_Quit] : CHECK_LEAKS\n"); fflush(stdout); | |
| 224 #endif | |
| 225 | |
| 0 | 226 /* Print the number of surfaces not freed */ |
| 227 if ( surfaces_allocated != 0 ) { | |
| 228 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n", | |
| 229 surfaces_allocated); | |
| 230 } | |
| 231 #endif | |
| 1190 | 232 #ifdef DEBUG_BUILD |
| 233 printf("[SDL_Quit] : SDL_UninstallParachute()\n"); fflush(stdout); | |
| 234 #endif | |
| 0 | 235 |
| 236 /* Uninstall any parachute signal handlers */ | |
| 237 SDL_UninstallParachute(); | |
| 397 | 238 |
| 239 #if !defined(DISABLE_THREADS) && defined(ENABLE_PTH) | |
| 240 pth_kill(); | |
| 241 #endif | |
| 1190 | 242 #ifdef DEBUG_BUILD |
| 243 printf("[SDL_Quit] : Returning!\n"); fflush(stdout); | |
| 244 #endif | |
| 245 | |
| 0 | 246 } |
| 247 | |
| 248 /* Return the library version number */ | |
| 249 const SDL_version * SDL_Linked_Version(void) | |
| 250 { | |
| 251 return(&version); | |
| 252 } | |
| 253 | |
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254 #if defined(__OS2__) |
| 1190 | 255 // Building for OS/2 |
| 256 #ifdef __WATCOMC__ | |
| 257 | |
| 258 #define INCL_DOSERRORS | |
| 259 #define INCL_DOSEXCEPTIONS | |
| 260 #include <os2.h> | |
| 261 | |
| 262 // Exception handler to prevent the Audio thread hanging, making a zombie process! | |
| 263 ULONG _System SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec, | |
| 264 PEXCEPTIONREGISTRATIONRECORD pERegRec, | |
| 265 PCONTEXTRECORD pCtxRec, | |
| 266 PVOID p) | |
| 267 { | |
| 268 if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND) | |
| 269 return XCPT_CONTINUE_SEARCH; | |
| 270 if (pERepRec->fHandlerFlags & EH_UNWINDING) | |
| 271 return XCPT_CONTINUE_SEARCH; | |
| 272 if (pERepRec->fHandlerFlags & EH_NESTED_CALL) | |
| 273 return XCPT_CONTINUE_SEARCH; | |
| 274 | |
| 275 // Do cleanup at every fatal exception! | |
| 276 if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) == XCPT_FATAL_EXCEPTION) && | |
| 277 (pERepRec->ExceptionNum != XCPT_BREAKPOINT) && | |
| 278 (pERepRec->ExceptionNum != XCPT_SINGLE_STEP) | |
| 279 ) | |
| 280 { | |
| 281 if (SDL_initialized & SDL_INIT_AUDIO) | |
| 282 { | |
| 283 // This removes the zombie audio thread in case of emergency. | |
| 284 #ifdef DEBUG_BUILD | |
| 285 printf("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n"); | |
| 286 #endif | |
| 287 SDL_CloseAudio(); | |
| 288 } | |
| 289 } | |
| 290 return (XCPT_CONTINUE_SEARCH); | |
| 291 } | |
| 292 | |
| 293 | |
| 294 EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand = {0, SDL_Main_ExceptionHandler}; | |
| 295 | |
| 296 // The main DLL entry for DLL Initialization and Uninitialization: | |
| 297 unsigned _System LibMain(unsigned hmod, unsigned termination) | |
| 298 { | |
| 299 if (termination) | |
| 300 { | |
| 301 #ifdef DEBUG_BUILD | |
| 302 // printf("[SDL DLL Unintialization] : Removing exception handler\n"); | |
| 303 #endif | |
| 304 DosUnsetExceptionHandler(&SDL_Main_xcpthand); | |
| 305 return 1; | |
| 306 } else | |
| 307 { | |
| 308 #ifdef DEBUG_BUILD | |
| 309 // Make stdout and stderr unbuffered! | |
| 310 setbuf(stdout, NULL); | |
| 311 setbuf(stderr, NULL); | |
| 312 #endif | |
| 313 // Fire up exception handler | |
| 314 #ifdef DEBUG_BUILD | |
| 315 // printf("[SDL DLL Initialization] : Setting exception handler\n"); | |
| 316 #endif | |
| 317 // Set exception handler | |
| 318 DosSetExceptionHandler(&SDL_Main_xcpthand); | |
| 319 | |
| 320 return 1; | |
| 321 } | |
| 322 } | |
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323 #endif /* __WATCOMC__ */ |
| 1190 | 324 |
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325 #elif defined(_WIN32) |
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326 |
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327 #if !defined(HAVE_LIBC) || defined(_WIN32_WCE) || (defined(__WATCOMC__) && defined(BUILD_DLL)) |
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328 /* Need to include DllMain() on Windows CE and Watcom C for some reason.. */ |
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329 #include "SDL_windows.h" |
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330 |
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331 BOOL APIENTRY _DllMainCRTStartup( HANDLE hModule, |
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332 DWORD ul_reason_for_call, |
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333 LPVOID lpReserved ) |
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334 { |
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335 switch (ul_reason_for_call) { |
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336 case DLL_PROCESS_ATTACH: |
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337 case DLL_THREAD_ATTACH: |
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338 case DLL_THREAD_DETACH: |
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339 case DLL_PROCESS_DETACH: |
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340 break; |
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341 } |
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342 return TRUE; |
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343 } |
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344 #endif /* _WIN32_WCE and building DLL with Watcom C */ |
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345 |
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346 #endif /* OS/2 elif _WIN32 */ |