/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Sam Lantinga

slouken@devolution.com

*/

#ifdef SAVE_RCSID

static char rcsid =

"@(#) $Id$";

#endif

/* Initialization code for SDL */

#include <stdlib.h> /* For getenv() */

#include "SDL.h"

#include "SDL_endian.h"

#include "SDL_fatal.h"

#ifndef DISABLE_VIDEO

#include "SDL_leaks.h"

#endif

/* Initialization/Cleanup routines */

#ifndef DISABLE_JOYSTICK

extern int SDL_JoystickInit(void);

extern void SDL_JoystickQuit(void);

#endif

#ifndef DISABLE_CDROM

extern int SDL_CDROMInit(void);

extern void SDL_CDROMQuit(void);

#endif

#ifndef DISABLE_TIMERS

extern void SDL_StartTicks(void);

extern int SDL_TimerInit(void);

extern void SDL_TimerQuit(void);

#endif

/* The current SDL version */

static SDL_version version =

{ SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL };

/* The initialized subsystems */

static Uint32 SDL_initialized = 0;

static Uint32 ticks_started = 0;

#ifdef CHECK_LEAKS

int surfaces_allocated = 0;

#endif

int SDL_InitSubSystem(Uint32 flags)

{

#ifndef DISABLE_VIDEO

/* Initialize the video/event subsystem */

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

if ( SDL_VideoInit(getenv("SDL_VIDEODRIVER"),

(flags&SDL_INIT_EVENTTHREAD)) < 0 ) {

return(-1);

}

SDL_initialized |= SDL_INIT_VIDEO;

}

#else

if ( flags & SDL_INIT_VIDEO ) {

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

return(-1);

}

#endif

#ifndef DISABLE_AUDIO

/* Initialize the audio subsystem */

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

if ( SDL_AudioInit(getenv("SDL_AUDIODRIVER")) < 0 ) {

return(-1);

}

SDL_initialized |= SDL_INIT_AUDIO;

}

#else

if ( flags & SDL_INIT_AUDIO ) {

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

return(-1);

}

#endif

#ifndef DISABLE_TIMERS

/* Initialize the timer subsystem */

if ( ! ticks_started ) {

SDL_StartTicks();

ticks_started = 1;

}

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

if ( SDL_TimerInit() < 0 ) {

return(-1);

}

SDL_initialized |= SDL_INIT_TIMER;

}

#else

if ( flags & SDL_INIT_TIMER ) {

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

return(-1);

}

#endif

#ifndef DISABLE_JOYSTICK

/* Initialize the joystick subsystem */

if ( (flags & SDL_INIT_JOYSTICK) &&

!(SDL_initialized & SDL_INIT_JOYSTICK) ) {

if ( SDL_JoystickInit() < 0 ) {

return(-1);

}

SDL_initialized |= SDL_INIT_JOYSTICK;

}

#else

if ( flags & SDL_INIT_JOYSTICK ) {

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

return(-1);

}

#endif

#ifndef DISABLE_CDROM

/* Initialize the CD-ROM subsystem */

if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) {

if ( SDL_CDROMInit() < 0 ) {

return(-1);

}

SDL_initialized |= SDL_INIT_CDROM;

}

#else

if ( flags & SDL_INIT_CDROM ) {

SDL_SetError("SDL not built with cdrom support");

return(-1);

}

#endif

return(0);

}

int SDL_Init(Uint32 flags)

{

/* Clear the error message */

SDL_ClearError();

/* Initialize the desired subsystems */

if ( SDL_InitSubSystem(flags) < 0 ) {

return(-1);

}

/* Everything is initialized */

if ( !(flags & SDL_INIT_NOPARACHUTE) ) {

SDL_InstallParachute();

}

return(0);

}

void SDL_QuitSubSystem(Uint32 flags)

{

/* Shut down requested initialized subsystems */

#ifndef DISABLE_CDROM

if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) {

SDL_CDROMQuit();

SDL_initialized &= ~SDL_INIT_CDROM;

}

#endif

#ifndef DISABLE_JOYSTICK

if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) {

SDL_JoystickQuit();

SDL_initialized &= ~SDL_INIT_JOYSTICK;

}

#endif

#ifndef DISABLE_TIMERS

if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) {

SDL_TimerQuit();

SDL_initialized &= ~SDL_INIT_TIMER;

}

#endif

#ifndef DISABLE_AUDIO

if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) {

SDL_AudioQuit();

SDL_initialized &= ~SDL_INIT_AUDIO;

}

#endif

#ifndef DISABLE_VIDEO

if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) {

SDL_VideoQuit();

SDL_initialized &= ~SDL_INIT_VIDEO;

}

#endif

}

Uint32 SDL_WasInit(Uint32 flags)

{

if ( ! flags ) {

flags = SDL_INIT_EVERYTHING;

}

return (SDL_initialized&flags);

}

void SDL_Quit(void)

{

/* Quit all subsystems */

SDL_QuitSubSystem(SDL_INIT_EVERYTHING);

#ifdef CHECK_LEAKS

/* Print the number of surfaces not freed */

if ( surfaces_allocated != 0 ) {

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

surfaces_allocated);

}

#endif

/* Uninstall any parachute signal handlers */

SDL_UninstallParachute();

}

/* Return the library version number */

const SDL_version * SDL_Linked_Version(void)

{

return(&version);

}

#if defined(_WIN32_WCE)

/* Need to include DllMain() on Windows CE for some reason.. */

#include <windows.h>

BOOL APIENTRY DllMain( HANDLE hModule,

DWORD ul_reason_for_call,

LPVOID lpReserved )

{

switch (ul_reason_for_call) {

case DLL_PROCESS_ATTACH:

case DLL_THREAD_ATTACH:

case DLL_THREAD_DETACH:

case DLL_PROCESS_DETACH:

break;

}

return TRUE;

}

#endif /* _WIN32_WCE */