src/SDL.c
author Paul Hunkin <paul@bieh.net>
Mon, 17 May 2010 15:14:34 +1200
changeset 4695 b7918263da92
parent 4419 5e7e1f1a4056
child 4472 791b3256fb22
permissions -rw-r--r--
Initial commit, adding __ANDROID__ to the platform list
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2010 Sam Lantinga
     4 
     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.
     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     Lesser General Public License for more details.
    14 
    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
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 #include "SDL_config.h"
    23 
    24 /* Initialization code for SDL */
    25 
    26 #include "SDL.h"
    27 #include "SDL_fatal.h"
    28 #include "SDL_assert.h"
    29 
    30 #if !SDL_VIDEO_DISABLED
    31 #include "video/SDL_leaks.h"
    32 #endif
    33 
    34 /* Initialization/Cleanup routines */
    35 #if !SDL_JOYSTICK_DISABLED
    36 extern int SDL_JoystickInit(void);
    37 extern void SDL_JoystickQuit(void);
    38 #endif
    39 #if !SDL_HAPTIC_DISABLED
    40 extern int SDL_HapticInit(void);
    41 extern int SDL_HapticQuit(void);
    42 #endif
    43 #if !SDL_TIMERS_DISABLED
    44 extern void SDL_StartTicks(void);
    45 extern int SDL_TimerInit(void);
    46 extern void SDL_TimerQuit(void);
    47 #endif
    48 #if defined(__WIN32__)
    49 extern int SDL_HelperWindowCreate(void);
    50 extern int SDL_HelperWindowDestroy(void);
    51 #endif
    52 
    53 extern int SDL_AssertionsInit(void);
    54 extern void SDL_AssertionsQuit(void);
    55 
    56 /* The initialized subsystems */
    57 static Uint32 SDL_initialized = 0;
    58 static Uint32 ticks_started = 0;
    59 
    60 #ifdef CHECK_LEAKS
    61 int surfaces_allocated = 0;
    62 #endif
    63 
    64 int
    65 SDL_InitSubSystem(Uint32 flags)
    66 {
    67 #if !SDL_VIDEO_DISABLED
    68     /* Initialize the video/event subsystem */
    69     if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) {
    70         if (SDL_VideoInit(NULL, (flags & SDL_INIT_EVENTTHREAD)) < 0) {
    71             return (-1);
    72         }
    73         SDL_initialized |= SDL_INIT_VIDEO;
    74     }
    75 #else
    76     if (flags & SDL_INIT_VIDEO) {
    77         SDL_SetError("SDL not built with video support");
    78         return (-1);
    79     }
    80 #endif
    81 
    82 #if !SDL_AUDIO_DISABLED
    83     /* Initialize the audio subsystem */
    84     if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) {
    85         if (SDL_AudioInit(NULL) < 0) {
    86             return (-1);
    87         }
    88         SDL_initialized |= SDL_INIT_AUDIO;
    89     }
    90 #else
    91     if (flags & SDL_INIT_AUDIO) {
    92         SDL_SetError("SDL not built with audio support");
    93         return (-1);
    94     }
    95 #endif
    96 
    97 #if !SDL_TIMERS_DISABLED
    98     /* Initialize the timer subsystem */
    99     if (!ticks_started) {
   100         SDL_StartTicks();
   101         ticks_started = 1;
   102     }
   103     if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) {
   104         if (SDL_TimerInit() < 0) {
   105             return (-1);
   106         }
   107         SDL_initialized |= SDL_INIT_TIMER;
   108     }
   109 #else
   110     if (flags & SDL_INIT_TIMER) {
   111         SDL_SetError("SDL not built with timer support");
   112         return (-1);
   113     }
   114 #endif
   115 
   116 #if !SDL_JOYSTICK_DISABLED
   117     /* Initialize the joystick subsystem */
   118     if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) {
   119         if (SDL_JoystickInit() < 0) {
   120             return (-1);
   121         }
   122         SDL_initialized |= SDL_INIT_JOYSTICK;
   123     }
   124 #else
   125     if (flags & SDL_INIT_JOYSTICK) {
   126         SDL_SetError("SDL not built with joystick support");
   127         return (-1);
   128     }
   129 #endif
   130 
   131 #if !SDL_HAPTIC_DISABLED
   132     /* Initialize the haptic subsystem */
   133     if ((flags & SDL_INIT_HAPTIC) && !(SDL_initialized & SDL_INIT_HAPTIC)) {
   134         if (SDL_HapticInit() < 0) {
   135             return (-1);
   136         }
   137         SDL_initialized |= SDL_INIT_HAPTIC;
   138     }
   139 #else
   140     if (flags & SDL_INIT_HAPTIC) {
   141         SDL_SetError("SDL not built with haptic (force feedback) support");
   142         return (-1);
   143     }
   144 #endif
   145     return (0);
   146 }
   147 
   148 int
   149 SDL_Init(Uint32 flags)
   150 {
   151     if (SDL_AssertionsInit() < 0) {
   152         return -1;
   153     }
   154 
   155     /* Clear the error message */
   156     SDL_ClearError();
   157 
   158 #if defined(__WIN32__)
   159     if (SDL_HelperWindowCreate() < 0) {
   160         return -1;
   161     }
   162 #endif
   163 
   164     /* Initialize the desired subsystems */
   165     if (SDL_InitSubSystem(flags) < 0) {
   166         return (-1);
   167     }
   168 
   169     /* Everything is initialized */
   170     if (!(flags & SDL_INIT_NOPARACHUTE)) {
   171         SDL_InstallParachute();
   172     }
   173 
   174     return (0);
   175 }
   176 
   177 void
   178 SDL_QuitSubSystem(Uint32 flags)
   179 {
   180     /* Shut down requested initialized subsystems */
   181 #if !SDL_JOYSTICK_DISABLED
   182     if ((flags & SDL_initialized & SDL_INIT_JOYSTICK)) {
   183         SDL_JoystickQuit();
   184         SDL_initialized &= ~SDL_INIT_JOYSTICK;
   185     }
   186 #endif
   187 #if !SDL_HAPTIC_DISABLED
   188     if ((flags & SDL_initialized & SDL_INIT_HAPTIC)) {
   189         SDL_HapticQuit();
   190         SDL_initialized &= ~SDL_INIT_HAPTIC;
   191     }
   192 #endif
   193 #if !SDL_TIMERS_DISABLED
   194     if ((flags & SDL_initialized & SDL_INIT_TIMER)) {
   195         SDL_TimerQuit();
   196         SDL_initialized &= ~SDL_INIT_TIMER;
   197     }
   198 #endif
   199 #if !SDL_AUDIO_DISABLED
   200     if ((flags & SDL_initialized & SDL_INIT_AUDIO)) {
   201         SDL_AudioQuit();
   202         SDL_initialized &= ~SDL_INIT_AUDIO;
   203     }
   204 #endif
   205 #if !SDL_VIDEO_DISABLED
   206     if ((flags & SDL_initialized & SDL_INIT_VIDEO)) {
   207         SDL_VideoQuit();
   208         SDL_initialized &= ~SDL_INIT_VIDEO;
   209     }
   210 #endif
   211 }
   212 
   213 Uint32
   214 SDL_WasInit(Uint32 flags)
   215 {
   216     if (!flags) {
   217         flags = SDL_INIT_EVERYTHING;
   218     }
   219     return (SDL_initialized & flags);
   220 }
   221 
   222 void
   223 SDL_Quit(void)
   224 {
   225     /* Quit all subsystems */
   226 #ifdef DEBUG_BUILD
   227     printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n");
   228     fflush(stdout);
   229 #endif
   230 
   231 #if defined(__WIN32__)
   232     SDL_HelperWindowDestroy();
   233 #endif
   234     SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
   235 
   236 #ifdef CHECK_LEAKS
   237 #ifdef DEBUG_BUILD
   238     printf("[SDL_Quit] : CHECK_LEAKS\n");
   239     fflush(stdout);
   240 #endif
   241 
   242     /* !!! FIXME: make this an assertion. */
   243     /* Print the number of surfaces not freed */
   244     if (surfaces_allocated != 0) {
   245         fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n",
   246                 surfaces_allocated);
   247     }
   248 #endif
   249 #ifdef DEBUG_BUILD
   250     printf("[SDL_Quit] : SDL_UninstallParachute()\n");
   251     fflush(stdout);
   252 #endif
   253 
   254     /* Uninstall any parachute signal handlers */
   255     SDL_UninstallParachute();
   256 
   257     SDL_AssertionsQuit();
   258 
   259 #ifdef DEBUG_BUILD
   260     printf("[SDL_Quit] : Returning!\n");
   261     fflush(stdout);
   262 #endif
   263 
   264 }
   265 
   266 /* Get the library version number */
   267 void
   268 SDL_GetVersion(SDL_version * ver)
   269 {
   270     SDL_VERSION(ver);
   271 }
   272 
   273 /* Get the library source revision */
   274 const char *
   275 SDL_GetRevision(void)
   276 {
   277     return SDL_REVISION;
   278 }
   279 
   280 /* Get the name of the platform */
   281 const char *
   282 SDL_GetPlatform()
   283 {
   284 #if __AIX__
   285     return "AIX";
   286 #elif __HAIKU__
   287 /* Haiku must appear here before BeOS, since it also defines __BEOS__ */
   288     return "Haiku";
   289 #elif __BEOS__
   290     return "BeOS";
   291 #elif __BSDI__
   292     return "BSDI";
   293 #elif __DREAMCAST__
   294     return "Dreamcast";
   295 #elif __FREEBSD__
   296     return "FreeBSD";
   297 #elif __HPUX__
   298     return "HP-UX";
   299 #elif __IRIX__
   300     return "Irix";
   301 #elif __LINUX__
   302     return "Linux";
   303 #elif __MINT__
   304     return "Atari MiNT";
   305 #elif __MACOS__
   306     return "MacOS Classic";
   307 #elif __MACOSX__
   308     return "Mac OS X";
   309 #elif __NETBSD__
   310     return "NetBSD";
   311 #elif __OPENBSD__
   312     return "OpenBSD";
   313 #elif __OS2__
   314     return "OS/2";
   315 #elif __OSF__
   316     return "OSF/1";
   317 #elif __QNXNTO__
   318     return "QNX Neutrino";
   319 #elif __RISCOS__
   320     return "RISC OS";
   321 #elif __SOLARIS__
   322     return "Solaris";
   323 #elif __WIN32__
   324 #ifdef _WIN32_WCE
   325     return "Windows CE";
   326 #else
   327     return "Windows";
   328 #endif
   329 #elif __IPHONEOS__
   330     return "iPhone OS";
   331 #else
   332     return "Unknown (see SDL_platform.h)";
   333 #endif
   334 }
   335 
   336 #if defined(__WIN32__)
   337 
   338 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL))
   339 /* Need to include DllMain() on Watcom C for some reason.. */
   340 #define WIN32_LEAN_AND_MEAN
   341 #include <windows.h>
   342 
   343 BOOL APIENTRY
   344 _DllMainCRTStartup(HANDLE hModule,
   345                    DWORD ul_reason_for_call, LPVOID lpReserved)
   346 {
   347     switch (ul_reason_for_call) {
   348     case DLL_PROCESS_ATTACH:
   349     case DLL_THREAD_ATTACH:
   350     case DLL_THREAD_DETACH:
   351     case DLL_PROCESS_DETACH:
   352         break;
   353     }
   354     return TRUE;
   355 }
   356 #endif /* building DLL with Watcom C */
   357 
   358 #endif /* __WIN32__ */
   359 
   360 /* vi: set ts=4 sw=4 expandtab: */