SDL: src/SDL.c@f7b03b6838cb

     1 /*

     2     SDL - Simple DirectMedia Layer

     3     Copyright (C) 1997-2010 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 /* 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

    53 extern int SDL_AssertionsInit(void);

    54 extern void SDL_AssertionsQuit(void);

    56 /* The initialized subsystems */

    57 static Uint32 SDL_initialized = 0;

    58 static Uint32 ticks_started = 0;

    60 #ifdef CHECK_LEAKS

    61 int surfaces_allocated = 0;

    62 #endif

    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

    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

    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

   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

   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 }

   148 int

   149 SDL_Init(Uint32 flags)

   150 {

   151     if (SDL_AssertionsInit() < 0) {

   152         return -1;

   153     }

   155     /* Clear the error message */

   156     SDL_ClearError();

   158 #if defined(__WIN32__)

   159     if (SDL_HelperWindowCreate() < 0) {

   160         return -1;

   161     }

   162 #endif

   164     /* Initialize the desired subsystems */

   165     if (SDL_InitSubSystem(flags) < 0) {

   166         return (-1);

   167     }

   169     /* Everything is initialized */

   170     if (!(flags & SDL_INIT_NOPARACHUTE)) {

   171         SDL_InstallParachute();

   172     }

   174     return (0);

   175 }

   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 }

   213 Uint32

   214 SDL_WasInit(Uint32 flags)

   215 {

   216     if (!flags) {

   217         flags = SDL_INIT_EVERYTHING;

   218     }

   219     return (SDL_initialized & flags);

   220 }

   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

   231 #if defined(__WIN32__)

   232     SDL_HelperWindowDestroy();

   233 #endif

   234     SDL_QuitSubSystem(SDL_INIT_EVERYTHING);

   236 #ifdef CHECK_LEAKS

   237 #ifdef DEBUG_BUILD

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

   239     fflush(stdout);

   240 #endif

   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

   254     /* Uninstall any parachute signal handlers */

   255     SDL_UninstallParachute();

   257     SDL_AssertionsQuit();

   259 #ifdef DEBUG_BUILD

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

   261     fflush(stdout);

   262 #endif

   264 }

   266 /* Get the library version number */

   267 void

   268 SDL_GetVersion(SDL_version * ver)

   269 {

   270     SDL_VERSION(ver);

   271 }

   273 /* Get the library source revision */

   274 int

   275 SDL_GetRevision(void)

   276 {

   277     return SDL_REVISION;

   278 }

   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 }

   336 #if defined(__WIN32__)

   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>

   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 */

   358 #endif /* __WIN32__ */

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

author	Sam Lantinga
	Sun, 24 Jan 2010 21:10:53 +0000
changeset 3697	f7b03b6838cb
parent 3696	47d923feedb0
child 4419	5e7e1f1a4056
permissions	-rw-r--r--