src/SDL.c
author Edward Rudd <urkle@outoforder.cc>
Wed, 26 Sep 2012 14:08:46 -0400
changeset 6462 5e09ac1aba80
parent 6441 ada3545fed23
child 6690 9548c8a58103
permissions -rwxr-xr-x
allocate *Hint structures per Xlib docs
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_config.h"
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/* Initialization code for SDL */
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#include "SDL.h"
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#include "SDL_revision.h"
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#include "SDL_fatal.h"
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#include "SDL_assert_c.h"
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#include "haptic/SDL_haptic_c.h"
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#include "joystick/SDL_joystick_c.h"
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/* Initialization/Cleanup routines */
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#if !SDL_TIMERS_DISABLED
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extern void SDL_StartTicks(void);
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extern int SDL_TimerInit(void);
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extern void SDL_TimerQuit(void);
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#endif
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#if defined(__WIN32__)
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extern int SDL_HelperWindowCreate(void);
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extern int SDL_HelperWindowDestroy(void);
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#endif
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/* The initialized subsystems */
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static Uint32 SDL_initialized = 0;
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static Uint32 ticks_started = 0;
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int
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SDL_InitSubSystem(Uint32 flags)
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{
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#if !SDL_TIMERS_DISABLED
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    /* Initialize the timer subsystem */
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    if (!ticks_started) {
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        SDL_StartTicks();
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        ticks_started = 1;
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    }
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    if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) {
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        if (SDL_TimerInit() < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_TIMER;
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    }
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#else
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    if (flags & SDL_INIT_TIMER) {
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        SDL_SetError("SDL not built with timer support");
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        return (-1);
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    }
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#endif
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#if !SDL_VIDEO_DISABLED
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    /* Initialize the video/event subsystem */
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    if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) {
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        if (SDL_VideoInit(NULL) < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_VIDEO;
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    }
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#else
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    if (flags & SDL_INIT_VIDEO) {
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        SDL_SetError("SDL not built with video support");
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        return (-1);
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    }
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#endif
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#if !SDL_AUDIO_DISABLED
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    /* Initialize the audio subsystem */
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    if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) {
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        if (SDL_AudioInit(NULL) < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_AUDIO;
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    }
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#else
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    if (flags & SDL_INIT_AUDIO) {
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        SDL_SetError("SDL not built with audio support");
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        return (-1);
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    }
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#endif
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#if !SDL_JOYSTICK_DISABLED
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    /* Initialize the joystick subsystem */
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    if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) {
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        if (SDL_JoystickInit() < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_JOYSTICK;
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    }
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#else
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    if (flags & SDL_INIT_JOYSTICK) {
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        SDL_SetError("SDL not built with joystick support");
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        return (-1);
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    }
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#endif
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#if !SDL_HAPTIC_DISABLED
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    /* Initialize the haptic subsystem */
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    if ((flags & SDL_INIT_HAPTIC) && !(SDL_initialized & SDL_INIT_HAPTIC)) {
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        if (SDL_HapticInit() < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_HAPTIC;
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    }
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#else
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    if (flags & SDL_INIT_HAPTIC) {
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        SDL_SetError("SDL not built with haptic (force feedback) support");
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        return (-1);
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    }
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#endif
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    return (0);
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}
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int
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SDL_Init(Uint32 flags)
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{
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    if (SDL_AssertionsInit() < 0) {
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        return -1;
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    }
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    /* Clear the error message */
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    SDL_ClearError();
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#if defined(__WIN32__)
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    if (SDL_HelperWindowCreate() < 0) {
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        return -1;
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    }
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#endif
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    /* Initialize the desired subsystems */
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    if (SDL_InitSubSystem(flags) < 0) {
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        return (-1);
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    }
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    /* Everything is initialized */
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    if (!(flags & SDL_INIT_NOPARACHUTE)) {
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        SDL_InstallParachute();
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    }
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    return (0);
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}
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void
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SDL_QuitSubSystem(Uint32 flags)
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{
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    /* Shut down requested initialized subsystems */
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#if !SDL_JOYSTICK_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_JOYSTICK)) {
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        SDL_JoystickQuit();
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        SDL_initialized &= ~SDL_INIT_JOYSTICK;
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    }
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#endif
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#if !SDL_HAPTIC_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_HAPTIC)) {
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        SDL_HapticQuit();
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        SDL_initialized &= ~SDL_INIT_HAPTIC;
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    }
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#endif
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#if !SDL_AUDIO_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_AUDIO)) {
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        SDL_AudioQuit();
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        SDL_initialized &= ~SDL_INIT_AUDIO;
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    }
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#endif
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#if !SDL_VIDEO_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_VIDEO)) {
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        SDL_VideoQuit();
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        SDL_initialized &= ~SDL_INIT_VIDEO;
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    }
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#endif
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#if !SDL_TIMERS_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_TIMER)) {
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        SDL_TimerQuit();
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        SDL_initialized &= ~SDL_INIT_TIMER;
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    }
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#endif
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}
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Uint32
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SDL_WasInit(Uint32 flags)
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{
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    if (!flags) {
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        flags = SDL_INIT_EVERYTHING;
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    }
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    return (SDL_initialized & flags);
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}
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void
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SDL_Quit(void)
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{
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    /* Quit all subsystems */
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#if defined(__WIN32__)
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    SDL_HelperWindowDestroy();
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#endif
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    SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
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    /* Uninstall any parachute signal handlers */
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    SDL_UninstallParachute();
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    SDL_ClearHints();
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    SDL_AssertionsQuit();
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    SDL_LogResetPriorities();
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}
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/* Get the library version number */
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void
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SDL_GetVersion(SDL_version * ver)
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{
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    SDL_VERSION(ver);
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}
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/* Get the library source revision */
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const char *
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SDL_GetRevision(void)
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{
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    return SDL_REVISION;
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}
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/* Get the library source revision number */
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int
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SDL_GetRevisionNumber(void)
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{
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    return SDL_REVISION_NUMBER;
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}
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/* Get the name of the platform */
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const char *
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SDL_GetPlatform()
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{
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#if __AIX__
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    return "AIX";
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#elif __ANDROID__
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    return "Android";
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#elif __HAIKU__
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/* Haiku must appear here before BeOS, since it also defines __BEOS__ */
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    return "Haiku";
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#elif __BEOS__
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    return "BeOS";
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#elif __BSDI__
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    return "BSDI";
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#elif __DREAMCAST__
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    return "Dreamcast";
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#elif __FREEBSD__
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    return "FreeBSD";
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#elif __HPUX__
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    return "HP-UX";
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#elif __IRIX__
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    return "Irix";
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#elif __LINUX__
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    return "Linux";
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#elif __MINT__
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    return "Atari MiNT";
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#elif __MACOS__
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    return "MacOS Classic";
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#elif __MACOSX__
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    return "Mac OS X";
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#elif __NETBSD__
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    return "NetBSD";
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#elif __NDS__
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    return "Nintendo DS";
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#elif __OPENBSD__
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    return "OpenBSD";
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#elif __OS2__
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    return "OS/2";
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#elif __OSF__
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    return "OSF/1";
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#elif __QNXNTO__
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    return "QNX Neutrino";
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#elif __RISCOS__
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    return "RISC OS";
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#elif __SOLARIS__
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    return "Solaris";
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#elif __WIN32__
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    return "Windows";
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#elif __IPHONEOS__
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    return "iPhone OS";
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#else
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    return "Unknown (see SDL_platform.h)";
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#endif
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}
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#if defined(__WIN32__)
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#if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL))
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/* Need to include DllMain() on Watcom C for some reason.. */
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#include "core/windows/SDL_windows.h"
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BOOL APIENTRY
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_DllMainCRTStartup(HANDLE hModule,
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                   DWORD ul_reason_for_call, LPVOID lpReserved)
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{
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    switch (ul_reason_for_call) {
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    case DLL_PROCESS_ATTACH:
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    case DLL_THREAD_ATTACH:
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    case DLL_THREAD_DETACH:
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    case DLL_PROCESS_DETACH:
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        break;
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    }
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    return TRUE;
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}
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#endif /* building DLL with Watcom C */
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#endif /* __WIN32__ */
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/* vi: set ts=4 sw=4 expandtab: */