Mercurial > sdl-ios-xcode
annotate src/SDL.c @ 209:c995b877bc5b
*** empty log message ***
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 16 Oct 2001 15:04:00 +0000 |
| parents | 13ee9f4834ea |
| children | e8157fcb3114 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga | |
| 4 | |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
| 20 slouken@devolution.com | |
| 21 */ | |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Initialization code for SDL */ | |
| 29 | |
| 30 #include <stdlib.h> /* For getenv() */ | |
| 31 | |
| 32 #include "SDL.h" | |
| 33 #include "SDL_endian.h" | |
| 34 #include "SDL_fatal.h" | |
| 35 #ifndef DISABLE_VIDEO | |
| 36 #include "SDL_leaks.h" | |
| 37 #endif | |
| 38 | |
| 39 /* Initialization/Cleanup routines */ | |
| 40 #ifndef DISABLE_JOYSTICK | |
| 41 extern int SDL_JoystickInit(void); | |
| 42 extern void SDL_JoystickQuit(void); | |
| 43 #endif | |
| 44 #ifndef DISABLE_CDROM | |
| 45 extern int SDL_CDROMInit(void); | |
| 46 extern void SDL_CDROMQuit(void); | |
| 47 #endif | |
| 48 #ifndef DISABLE_TIMERS | |
| 49 extern void SDL_StartTicks(void); | |
| 50 extern int SDL_TimerInit(void); | |
| 51 extern void SDL_TimerQuit(void); | |
| 52 #endif | |
| 53 | |
| 54 /* The current SDL version */ | |
| 55 static SDL_version version = | |
| 56 { SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL }; | |
| 57 | |
| 58 /* The initialized subsystems */ | |
| 59 static Uint32 SDL_initialized = 0; | |
| 60 static Uint32 ticks_started = 0; | |
| 61 | |
| 62 #ifdef CHECK_LEAKS | |
| 63 int surfaces_allocated = 0; | |
| 64 #endif | |
| 65 | |
| 66 int SDL_InitSubSystem(Uint32 flags) | |
| 67 { | |
| 68 #ifndef DISABLE_VIDEO | |
| 69 /* Initialize the video/event subsystem */ | |
| 70 if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) { | |
| 71 if ( SDL_VideoInit(getenv("SDL_VIDEODRIVER"), | |
| 72 (flags&SDL_INIT_EVENTTHREAD)) < 0 ) { | |
| 73 return(-1); | |
| 74 } | |
| 75 SDL_initialized |= SDL_INIT_VIDEO; | |
| 76 } | |
| 77 #else | |
| 78 if ( flags & SDL_INIT_VIDEO ) { | |
| 79 SDL_SetError("SDL not built with video support"); | |
| 80 return(-1); | |
| 81 } | |
| 82 #endif | |
| 83 | |
| 84 #ifndef DISABLE_AUDIO | |
| 85 /* Initialize the audio subsystem */ | |
| 86 if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) { | |
| 87 if ( SDL_AudioInit(getenv("SDL_AUDIODRIVER")) < 0 ) { | |
| 88 return(-1); | |
| 89 } | |
| 90 SDL_initialized |= SDL_INIT_AUDIO; | |
| 91 } | |
| 92 #else | |
| 93 if ( flags & SDL_INIT_AUDIO ) { | |
| 94 SDL_SetError("SDL not built with audio support"); | |
| 95 return(-1); | |
| 96 } | |
| 97 #endif | |
| 98 | |
| 99 #ifndef DISABLE_TIMERS | |
| 100 /* Initialize the timer subsystem */ | |
| 101 if ( ! ticks_started ) { | |
| 102 SDL_StartTicks(); | |
| 103 ticks_started = 1; | |
| 104 } | |
| 105 if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) { | |
| 106 if ( SDL_TimerInit() < 0 ) { | |
| 107 return(-1); | |
| 108 } | |
| 109 SDL_initialized |= SDL_INIT_TIMER; | |
| 110 } | |
| 111 #else | |
| 112 if ( flags & SDL_INIT_TIMER ) { | |
| 113 SDL_SetError("SDL not built with timer support"); | |
| 114 return(-1); | |
| 115 } | |
| 116 #endif | |
| 117 | |
| 118 #ifndef DISABLE_JOYSTICK | |
| 119 /* Initialize the joystick subsystem */ | |
| 120 if ( (flags & SDL_INIT_JOYSTICK) && | |
| 121 !(SDL_initialized & SDL_INIT_JOYSTICK) ) { | |
| 122 if ( SDL_JoystickInit() < 0 ) { | |
| 123 return(-1); | |
| 124 } | |
| 125 SDL_initialized |= SDL_INIT_JOYSTICK; | |
| 126 } | |
| 127 #else | |
| 128 if ( flags & SDL_INIT_JOYSTICK ) { | |
| 129 SDL_SetError("SDL not built with joystick support"); | |
| 130 return(-1); | |
| 131 } | |
| 132 #endif | |
| 133 | |
| 134 #ifndef DISABLE_CDROM | |
| 135 /* Initialize the CD-ROM subsystem */ | |
| 136 if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) { | |
| 137 if ( SDL_CDROMInit() < 0 ) { | |
| 138 return(-1); | |
| 139 } | |
| 140 SDL_initialized |= SDL_INIT_CDROM; | |
| 141 } | |
| 142 #else | |
| 143 if ( flags & SDL_INIT_CDROM ) { | |
| 144 SDL_SetError("SDL not built with cdrom support"); | |
| 145 return(-1); | |
| 146 } | |
| 147 #endif | |
| 148 return(0); | |
| 149 } | |
| 150 | |
| 151 int SDL_Init(Uint32 flags) | |
| 152 { | |
| 153 /* Clear the error message */ | |
| 154 SDL_ClearError(); | |
| 155 | |
| 156 /* Initialize the desired subsystems */ | |
| 157 if ( SDL_InitSubSystem(flags) < 0 ) { | |
| 158 return(-1); | |
| 159 } | |
| 160 | |
| 161 /* Everything is initialized */ | |
| 162 if ( !(flags & SDL_INIT_NOPARACHUTE) ) { | |
| 163 SDL_InstallParachute(); | |
| 164 } | |
| 165 return(0); | |
| 166 } | |
| 167 | |
| 168 void SDL_QuitSubSystem(Uint32 flags) | |
| 169 { | |
| 170 /* Shut down requested initialized subsystems */ | |
| 171 #ifndef DISABLE_CDROM | |
| 172 if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) { | |
| 173 SDL_CDROMQuit(); | |
| 174 SDL_initialized &= ~SDL_INIT_CDROM; | |
| 175 } | |
| 176 #endif | |
| 177 #ifndef DISABLE_JOYSTICK | |
| 178 if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) { | |
| 179 SDL_JoystickQuit(); | |
| 180 SDL_initialized &= ~SDL_INIT_JOYSTICK; | |
| 181 } | |
| 182 #endif | |
| 183 #ifndef DISABLE_TIMERS | |
| 184 if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) { | |
| 185 SDL_TimerQuit(); | |
| 186 SDL_initialized &= ~SDL_INIT_TIMER; | |
| 187 } | |
| 188 #endif | |
| 189 #ifndef DISABLE_AUDIO | |
| 190 if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) { | |
| 191 SDL_AudioQuit(); | |
| 192 SDL_initialized &= ~SDL_INIT_AUDIO; | |
| 193 } | |
| 194 #endif | |
| 195 #ifndef DISABLE_VIDEO | |
| 196 if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) { | |
| 197 SDL_VideoQuit(); | |
| 198 SDL_initialized &= ~SDL_INIT_VIDEO; | |
| 199 } | |
| 200 #endif | |
| 201 } | |
| 202 | |
| 203 Uint32 SDL_WasInit(Uint32 flags) | |
| 204 { | |
| 205 if ( ! flags ) { | |
| 206 flags = SDL_INIT_EVERYTHING; | |
| 207 } | |
| 208 return (SDL_initialized&flags); | |
| 209 } | |
| 210 | |
| 211 void SDL_Quit(void) | |
| 212 { | |
| 213 /* Quit all subsystems */ | |
| 214 SDL_QuitSubSystem(SDL_INIT_EVERYTHING); | |
| 215 | |
| 216 #ifdef CHECK_LEAKS | |
| 217 /* Print the number of surfaces not freed */ | |
| 218 if ( surfaces_allocated != 0 ) { | |
| 219 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n", | |
| 220 surfaces_allocated); | |
| 221 } | |
| 222 #endif | |
| 223 | |
| 224 /* Uninstall any parachute signal handlers */ | |
| 225 SDL_UninstallParachute(); | |
| 226 } | |
| 227 | |
| 228 /* Return the library version number */ | |
| 229 const SDL_version * SDL_Linked_Version(void) | |
| 230 { | |
| 231 return(&version); | |
| 232 } | |
| 233 | |
|
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234 #if defined(_WIN32_WCE) |
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235 /* Need to include DllMain() on Windows CE for some reason.. */ |
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236 #include <windows.h> |
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237 |
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238 BOOL APIENTRY DllMain( HANDLE hModule, |
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239 DWORD ul_reason_for_call, |
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240 LPVOID lpReserved ) |
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241 { |
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242 switch (ul_reason_for_call) { |
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243 case DLL_PROCESS_ATTACH: |
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244 case DLL_THREAD_ATTACH: |
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245 case DLL_THREAD_DETACH: |
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246 case DLL_PROCESS_DETACH: |
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247 break; |
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248 } |
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249 return TRUE; |
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250 } |
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251 #endif /* _WIN32_WCE */ |