SDL: src/SDL.c@c5925cd41955

     1 /*

     2     SDL - Simple DirectMedia Layer

     3     Copyright (C) 1997-2009 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

    19     Sam Lantinga

    20     slouken@libsdl.org

    21 */

    22 #include "SDL_config.h"

    24 /* Initialization code for SDL */

    26 #include "SDL.h"

    27 #include "SDL_fatal.h"

    28 #include "SDL_assert.h"

    30 #if !SDL_VIDEO_DISABLED

    31 #include "video/SDL_leaks.h"

    32 #endif

    34 #if SDL_THREAD_PTH

    35 #include <pth.h>

    36 #endif

    38 /* Initialization/Cleanup routines */

    39 #if !SDL_JOYSTICK_DISABLED

    40 extern int SDL_JoystickInit(void);

    41 extern void SDL_JoystickQuit(void);

    42 #endif

    43 #if !SDL_HAPTIC_DISABLED

    44 extern int SDL_HapticInit(void);

    45 extern int SDL_HapticQuit(void);

    46 #endif

    47 #if !SDL_TIMERS_DISABLED

    48 extern void SDL_StartTicks(void);

    49 extern int SDL_TimerInit(void);

    50 extern void SDL_TimerQuit(void);

    51 #endif

    52 #if defined(__WIN32__)

    53 extern int SDL_HelperWindowCreate(void);

    54 extern int SDL_HelperWindowDestroy(void);

    55 #endif

    57 extern int SDL_AssertionsInit(void);

    58 extern void SDL_AssertionsQuit(void);

    60 /* The initialized subsystems */

    61 static Uint32 SDL_initialized = 0;

    62 static Uint32 ticks_started = 0;

    64 #ifdef CHECK_LEAKS

    65 int surfaces_allocated = 0;

    66 #endif

    68 int

    69 SDL_InitSubSystem(Uint32 flags)

    70 {

    71 #if !SDL_VIDEO_DISABLED

    72     /* Initialize the video/event subsystem */

    73     if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) {

    74         if (SDL_VideoInit(NULL, (flags & SDL_INIT_EVENTTHREAD)) < 0) {

    75             return (-1);

    76         }

    77         SDL_initialized |= SDL_INIT_VIDEO;

    78     }

    79 #else

    80     if (flags & SDL_INIT_VIDEO) {

    81         SDL_SetError("SDL not built with video support");

    82         return (-1);

    83     }

    84 #endif

    86 #if !SDL_AUDIO_DISABLED

    87     /* Initialize the audio subsystem */

    88     if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) {

    89         if (SDL_AudioInit(NULL) < 0) {

    90             return (-1);

    91         }

    92         SDL_initialized |= SDL_INIT_AUDIO;

    93     }

    94 #else

    95     if (flags & SDL_INIT_AUDIO) {

    96         SDL_SetError("SDL not built with audio support");

    97         return (-1);

    98     }

    99 #endif

   101 #if !SDL_TIMERS_DISABLED

   102     /* Initialize the timer subsystem */

   103     if (!ticks_started) {

   104         SDL_StartTicks();

   105         ticks_started = 1;

   106     }

   107     if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) {

   108         if (SDL_TimerInit() < 0) {

   109             return (-1);

   110         }

   111         SDL_initialized |= SDL_INIT_TIMER;

   112     }

   113 #else

   114     if (flags & SDL_INIT_TIMER) {

   115         SDL_SetError("SDL not built with timer support");

   116         return (-1);

   117     }

   118 #endif

   120 #if !SDL_JOYSTICK_DISABLED

   121     /* Initialize the joystick subsystem */

   122     if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) {

   123         if (SDL_JoystickInit() < 0) {

   124             return (-1);

   125         }

   126         SDL_initialized |= SDL_INIT_JOYSTICK;

   127     }

   128 #else

   129     if (flags & SDL_INIT_JOYSTICK) {

   130         SDL_SetError("SDL not built with joystick support");

   131         return (-1);

   132     }

   133 #endif

   135 #if !SDL_HAPTIC_DISABLED

   136     /* Initialize the haptic subsystem */

   137     if ((flags & SDL_INIT_HAPTIC) && !(SDL_initialized & SDL_INIT_HAPTIC)) {

   138         if (SDL_HapticInit() < 0) {

   139             return (-1);

   140         }

   141         SDL_initialized |= SDL_INIT_HAPTIC;

   142     }

   143 #else

   144     if (flags & SDL_INIT_HAPTIC) {

   145         SDL_SetError("SDL not built with haptic (force feedback) support");

   146         return (-1);

   147     }

   148 #endif

   149     return (0);

   150 }

   152 int

   153 SDL_Init(Uint32 flags)

   154 {

   155 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH

   156     if (!pth_init()) {

   157         return -1;

   158     }

   159 #endif

   161     if (SDL_AssertionsInit() < 0) {

   162         return -1;

   163     }

   165     /* Clear the error message */

   166     SDL_ClearError();

   168 #if defined(__WIN32__)

   169     if (SDL_HelperWindowCreate() < 0) {

   170         return -1;

   171     }

   172 #endif

   174     /* Initialize the desired subsystems */

   175     if (SDL_InitSubSystem(flags) < 0) {

   176         return (-1);

   177     }

   179     /* Everything is initialized */

   180     if (!(flags & SDL_INIT_NOPARACHUTE)) {

   181         SDL_InstallParachute();

   182     }

   184     /* brief sanity checks for the sanity checks.  :)  */

   185     SDL_assert(1);

   186     SDL_assert_release(1);

   187     SDL_assert_paranoid(1);

   188     SDL_assert(0 || 1);

   189     SDL_assert_release(0 || 1);

   190     SDL_assert_paranoid(0 || 1);

   192 #if 0   /* enable this to test assertion failures. */

   193     SDL_assert_release(1 == 2);

   194     SDL_assert_release(5 < 4);

   195     SDL_assert_release(0 && "This is a test");

   196 #endif

   198     return (0);

   199 }

   201 void

   202 SDL_QuitSubSystem(Uint32 flags)

   203 {

   204     /* Shut down requested initialized subsystems */

   205 #if !SDL_JOYSTICK_DISABLED

   206     if ((flags & SDL_initialized & SDL_INIT_JOYSTICK)) {

   207         SDL_JoystickQuit();

   208         SDL_initialized &= ~SDL_INIT_JOYSTICK;

   209     }

   210 #endif

   211 #if !SDL_HAPTIC_DISABLED

   212     if ((flags & SDL_initialized & SDL_INIT_HAPTIC)) {

   213         SDL_HapticQuit();

   214         SDL_initialized &= ~SDL_INIT_HAPTIC;

   215     }

   216 #endif

   217 #if !SDL_TIMERS_DISABLED

   218     if ((flags & SDL_initialized & SDL_INIT_TIMER)) {

   219         SDL_TimerQuit();

   220         SDL_initialized &= ~SDL_INIT_TIMER;

   221     }

   222 #endif

   223 #if !SDL_AUDIO_DISABLED

   224     if ((flags & SDL_initialized & SDL_INIT_AUDIO)) {

   225         SDL_AudioQuit();

   226         SDL_initialized &= ~SDL_INIT_AUDIO;

   227     }

   228 #endif

   229 #if !SDL_VIDEO_DISABLED

   230     if ((flags & SDL_initialized & SDL_INIT_VIDEO)) {

   231         SDL_VideoQuit();

   232         SDL_initialized &= ~SDL_INIT_VIDEO;

   233     }

   234 #endif

   235 }

   237 Uint32

   238 SDL_WasInit(Uint32 flags)

   239 {

   240     if (!flags) {

   241         flags = SDL_INIT_EVERYTHING;

   242     }

   243     return (SDL_initialized & flags);

   244 }

   246 void

   247 SDL_Quit(void)

   248 {

   249     /* Quit all subsystems */

   250 #ifdef DEBUG_BUILD

   251     printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n");

   252     fflush(stdout);

   253 #endif

   255 #if defined(__WIN32__)

   256     SDL_HelperWindowDestroy();

   257 #endif

   258     SDL_QuitSubSystem(SDL_INIT_EVERYTHING);

   260 #ifdef CHECK_LEAKS

   261 #ifdef DEBUG_BUILD

   262     printf("[SDL_Quit] : CHECK_LEAKS\n");

   263     fflush(stdout);

   264 #endif

   266     /* !!! FIXME: make this an assertion. */

   267     /* Print the number of surfaces not freed */

   268     if (surfaces_allocated != 0) {

   269         fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n",

   270                 surfaces_allocated);

   271     }

   272 #endif

   273 #ifdef DEBUG_BUILD

   274     printf("[SDL_Quit] : SDL_UninstallParachute()\n");

   275     fflush(stdout);

   276 #endif

   278     /* Uninstall any parachute signal handlers */

   279     SDL_UninstallParachute();

   281     SDL_AssertionsQuit();

   283 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH

   284     pth_kill();

   285 #endif

   286 #ifdef DEBUG_BUILD

   287     printf("[SDL_Quit] : Returning!\n");

   288     fflush(stdout);

   289 #endif

   291 }

   293 /* Get the library version number */

   294 void

   295 SDL_GetVersion(SDL_version * ver)

   296 {

   297     SDL_VERSION(ver);

   298 }

   300 /* Get the library source revision */

   301 int

   302 SDL_GetRevision(void)

   303 {

   304     return SDL_REVISION;

   305 }

   307 /* Get the name of the platform */

   308 const char *

   309 SDL_GetPlatform()

   310 {

   311 #if __AIX__

   312     return "AIX";

   313 #elif __HAIKU__

   314 /* Haiku must appear here before BeOS, since it also defines __BEOS__ */

   315     return "Haiku";

   316 #elif __BEOS__

   317     return "BeOS";

   318 #elif __BSDI__

   319     return "BSDI";

   320 #elif __DREAMCAST__

   321     return "Dreamcast";

   322 #elif __FREEBSD__

   323     return "FreeBSD";

   324 #elif __HPUX__

   325     return "HP-UX";

   326 #elif __IRIX__

   327     return "Irix";

   328 #elif __LINUX__

   329     return "Linux";

   330 #elif __MINT__

   331     return "Atari MiNT";

   332 #elif __MACOS__

   333     return "MacOS Classic";

   334 #elif __MACOSX__

   335     return "Mac OS X";

   336 #elif __NETBSD__

   337     return "NetBSD";

   338 #elif __OPENBSD__

   339     return "OpenBSD";

   340 #elif __OS2__

   341     return "OS/2";

   342 #elif __OSF__

   343     return "OSF/1";

   344 #elif __QNXNTO__

   345     return "QNX Neutrino";

   346 #elif __RISCOS__

   347     return "RISC OS";

   348 #elif __SOLARIS__

   349     return "Solaris";

   350 #elif __WIN32__

   351 #ifdef _WIN32_WCE

   352     return "Windows CE";

   353 #else

   354     return "Windows";

   355 #endif

   356 #elif __IPHONEOS__

   357     return "iPhone OS";

   358 #else

   359     return "Unknown (see SDL_platform.h)";

   360 #endif

   361 }

   363 #if defined(__WIN32__)

   365 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL))

   366 /* Need to include DllMain() on Watcom C for some reason.. */

   367 #define WIN32_LEAN_AND_MEAN

   368 #include <windows.h>

   370 BOOL APIENTRY

   371 _DllMainCRTStartup(HANDLE hModule,

   372                    DWORD ul_reason_for_call, LPVOID lpReserved)

   373 {

   374     switch (ul_reason_for_call) {

   375     case DLL_PROCESS_ATTACH:

   376     case DLL_THREAD_ATTACH:

   377     case DLL_THREAD_DETACH:

   378     case DLL_PROCESS_DETACH:

   379         break;

   380     }

   381     return TRUE;

   382 }

   383 #endif /* building DLL with Watcom C */

   385 #endif /* __WIN32__ */

   387 /* vi: set ts=4 sw=4 expandtab: */

author	Sam Lantinga
	Wed, 13 Jan 2010 06:47:17 +0000
changeset 3647	c5925cd41955
parent 3319	63d4517fc4ac
child 3663	bc50cd16bb07
permissions	-rw-r--r--