Mercurial > sdl-ios-xcode
annotate src/SDL.c @ 948:ac488ad4ef1d
Don't fail if we don't have ALSA available
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 24 Aug 2004 06:32:50 +0000 |
| parents | b8d311d90021 |
| children | 173c063d4f55 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 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 | |
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20 slouken@libsdl.org |
| 0 | 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() */ | |
|
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31 #ifdef ENABLE_PTH |
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32 #include <pth.h> |
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33 #endif |
| 0 | 34 |
| 35 #include "SDL.h" | |
| 36 #include "SDL_endian.h" | |
| 37 #include "SDL_fatal.h" | |
| 38 #ifndef DISABLE_VIDEO | |
| 39 #include "SDL_leaks.h" | |
| 40 #endif | |
| 41 | |
| 42 /* Initialization/Cleanup routines */ | |
| 43 #ifndef DISABLE_JOYSTICK | |
| 44 extern int SDL_JoystickInit(void); | |
| 45 extern void SDL_JoystickQuit(void); | |
| 46 #endif | |
| 47 #ifndef DISABLE_CDROM | |
| 48 extern int SDL_CDROMInit(void); | |
| 49 extern void SDL_CDROMQuit(void); | |
| 50 #endif | |
| 51 #ifndef DISABLE_TIMERS | |
| 52 extern void SDL_StartTicks(void); | |
| 53 extern int SDL_TimerInit(void); | |
| 54 extern void SDL_TimerQuit(void); | |
| 55 #endif | |
| 56 | |
| 57 /* The current SDL version */ | |
| 58 static SDL_version version = | |
| 59 { SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL }; | |
| 60 | |
| 61 /* The initialized subsystems */ | |
| 62 static Uint32 SDL_initialized = 0; | |
| 63 static Uint32 ticks_started = 0; | |
| 64 | |
| 65 #ifdef CHECK_LEAKS | |
| 66 int surfaces_allocated = 0; | |
| 67 #endif | |
| 68 | |
| 69 int SDL_InitSubSystem(Uint32 flags) | |
| 70 { | |
| 71 #ifndef DISABLE_VIDEO | |
| 72 /* Initialize the video/event subsystem */ | |
| 73 if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) { | |
| 74 if ( SDL_VideoInit(getenv("SDL_VIDEODRIVER"), | |
| 75 (flags&SDL_INIT_EVENTTHREAD)) < 0 ) { | |
| 76 return(-1); | |
| 77 } | |
| 78 SDL_initialized |= SDL_INIT_VIDEO; | |
| 79 } | |
| 80 #else | |
| 81 if ( flags & SDL_INIT_VIDEO ) { | |
| 82 SDL_SetError("SDL not built with video support"); | |
| 83 return(-1); | |
| 84 } | |
| 85 #endif | |
| 86 | |
| 87 #ifndef DISABLE_AUDIO | |
| 88 /* Initialize the audio subsystem */ | |
| 89 if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) { | |
| 90 if ( SDL_AudioInit(getenv("SDL_AUDIODRIVER")) < 0 ) { | |
| 91 return(-1); | |
| 92 } | |
| 93 SDL_initialized |= SDL_INIT_AUDIO; | |
| 94 } | |
| 95 #else | |
| 96 if ( flags & SDL_INIT_AUDIO ) { | |
| 97 SDL_SetError("SDL not built with audio support"); | |
| 98 return(-1); | |
| 99 } | |
| 100 #endif | |
| 101 | |
| 102 #ifndef DISABLE_TIMERS | |
| 103 /* Initialize the timer subsystem */ | |
| 104 if ( ! ticks_started ) { | |
| 105 SDL_StartTicks(); | |
| 106 ticks_started = 1; | |
| 107 } | |
| 108 if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) { | |
| 109 if ( SDL_TimerInit() < 0 ) { | |
| 110 return(-1); | |
| 111 } | |
| 112 SDL_initialized |= SDL_INIT_TIMER; | |
| 113 } | |
| 114 #else | |
| 115 if ( flags & SDL_INIT_TIMER ) { | |
| 116 SDL_SetError("SDL not built with timer support"); | |
| 117 return(-1); | |
| 118 } | |
| 119 #endif | |
| 120 | |
| 121 #ifndef DISABLE_JOYSTICK | |
| 122 /* Initialize the joystick subsystem */ | |
| 123 if ( (flags & SDL_INIT_JOYSTICK) && | |
| 124 !(SDL_initialized & SDL_INIT_JOYSTICK) ) { | |
| 125 if ( SDL_JoystickInit() < 0 ) { | |
| 126 return(-1); | |
| 127 } | |
| 128 SDL_initialized |= SDL_INIT_JOYSTICK; | |
| 129 } | |
| 130 #else | |
| 131 if ( flags & SDL_INIT_JOYSTICK ) { | |
| 132 SDL_SetError("SDL not built with joystick support"); | |
| 133 return(-1); | |
| 134 } | |
| 135 #endif | |
| 136 | |
| 137 #ifndef DISABLE_CDROM | |
| 138 /* Initialize the CD-ROM subsystem */ | |
| 139 if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) { | |
| 140 if ( SDL_CDROMInit() < 0 ) { | |
| 141 return(-1); | |
| 142 } | |
| 143 SDL_initialized |= SDL_INIT_CDROM; | |
| 144 } | |
| 145 #else | |
| 146 if ( flags & SDL_INIT_CDROM ) { | |
| 147 SDL_SetError("SDL not built with cdrom support"); | |
| 148 return(-1); | |
| 149 } | |
| 150 #endif | |
| 151 return(0); | |
| 152 } | |
| 153 | |
| 154 int SDL_Init(Uint32 flags) | |
| 155 { | |
| 397 | 156 #if !defined(DISABLE_THREADS) && defined(ENABLE_PTH) |
| 157 if (!pth_init()) { | |
| 158 return -1; | |
| 159 } | |
| 160 #endif | |
| 161 | |
| 0 | 162 /* Clear the error message */ |
| 163 SDL_ClearError(); | |
| 164 | |
| 165 /* Initialize the desired subsystems */ | |
| 166 if ( SDL_InitSubSystem(flags) < 0 ) { | |
| 167 return(-1); | |
| 168 } | |
| 169 | |
| 170 /* Everything is initialized */ | |
| 171 if ( !(flags & SDL_INIT_NOPARACHUTE) ) { | |
| 172 SDL_InstallParachute(); | |
| 173 } | |
| 174 return(0); | |
| 175 } | |
| 176 | |
| 177 void SDL_QuitSubSystem(Uint32 flags) | |
| 178 { | |
| 179 /* Shut down requested initialized subsystems */ | |
| 180 #ifndef DISABLE_CDROM | |
| 181 if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) { | |
| 182 SDL_CDROMQuit(); | |
| 183 SDL_initialized &= ~SDL_INIT_CDROM; | |
| 184 } | |
| 185 #endif | |
| 186 #ifndef DISABLE_JOYSTICK | |
| 187 if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) { | |
| 188 SDL_JoystickQuit(); | |
| 189 SDL_initialized &= ~SDL_INIT_JOYSTICK; | |
| 190 } | |
| 191 #endif | |
| 192 #ifndef DISABLE_TIMERS | |
| 193 if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) { | |
| 194 SDL_TimerQuit(); | |
| 195 SDL_initialized &= ~SDL_INIT_TIMER; | |
| 196 } | |
| 197 #endif | |
| 198 #ifndef DISABLE_AUDIO | |
| 199 if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) { | |
| 200 SDL_AudioQuit(); | |
| 201 SDL_initialized &= ~SDL_INIT_AUDIO; | |
| 202 } | |
| 203 #endif | |
| 204 #ifndef DISABLE_VIDEO | |
| 205 if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) { | |
| 206 SDL_VideoQuit(); | |
| 207 SDL_initialized &= ~SDL_INIT_VIDEO; | |
| 208 } | |
| 209 #endif | |
| 210 } | |
| 211 | |
| 212 Uint32 SDL_WasInit(Uint32 flags) | |
| 213 { | |
| 214 if ( ! flags ) { | |
| 215 flags = SDL_INIT_EVERYTHING; | |
| 216 } | |
| 217 return (SDL_initialized&flags); | |
| 218 } | |
| 219 | |
| 220 void SDL_Quit(void) | |
| 221 { | |
| 222 /* Quit all subsystems */ | |
| 223 SDL_QuitSubSystem(SDL_INIT_EVERYTHING); | |
| 224 | |
| 225 #ifdef CHECK_LEAKS | |
| 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 | |
| 232 | |
| 233 /* Uninstall any parachute signal handlers */ | |
| 234 SDL_UninstallParachute(); | |
| 397 | 235 |
| 236 #if !defined(DISABLE_THREADS) && defined(ENABLE_PTH) | |
| 237 pth_kill(); | |
| 238 #endif | |
| 0 | 239 } |
| 240 | |
| 241 /* Return the library version number */ | |
| 242 const SDL_version * SDL_Linked_Version(void) | |
| 243 { | |
| 244 return(&version); | |
| 245 } | |
| 246 | |
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247 #if defined(_WIN32_WCE) || (defined(__WATCOMC__) && defined(BUILD_DLL)) |
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248 /* Need to include DllMain() on Windows CE and Watcom C for some reason.. */ |
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249 #include <windows.h> |
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250 |
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251 BOOL APIENTRY DllMain( HANDLE hModule, |
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252 DWORD ul_reason_for_call, |
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253 LPVOID lpReserved ) |
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254 { |
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255 switch (ul_reason_for_call) { |
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256 case DLL_PROCESS_ATTACH: |
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257 case DLL_THREAD_ATTACH: |
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258 case DLL_THREAD_DETACH: |
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259 case DLL_PROCESS_DETACH: |
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260 break; |
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261 } |
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262 return TRUE; |
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263 } |
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264 #endif /* _WIN32_WCE and building DLL with Watcom C */ |