src/SDL.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 06 May 2004 15:55:06 +0000
changeset 886 05c551e5bc64
parent 769 b8d311d90021
child 1190 173c063d4f55
permissions -rw-r--r--
Date: Sat, 24 Apr 2004 15:13:32 +0300 From: "Mike Gorchak" Subject: SDL updates for the QNX6 1. Updated the README.QNX 2. Updated libtool scripts, which are shipped with SDL for QNX6 support. 3. Added some code to support the new QNX 6.3.0, which is in beta now. 4. Added code to detect the hw features, which driver supports. 5. Added hw alpha blits code. 6. Fixed bug when application switches to fullscreen more the 2 times. (afte\ r that window becames always stay on top). 7. Updated a bit README for the tests. 8. Added information about acceleration show in the testalpha.c test. 9. Added small fixes to the testoverlay2.c test. 10. Added alpha and cc+alpha blits benchmarks to the testvidinfo.c test.

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 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@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

/* Initialization code for SDL */

#include <stdlib.h>		/* For getenv() */
#ifdef ENABLE_PTH
#include <pth.h>
#endif

#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)
{
#if !defined(DISABLE_THREADS) && defined(ENABLE_PTH)
	if (!pth_init()) {
		return -1;
	}
#endif

	/* 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();

#if !defined(DISABLE_THREADS) && defined(ENABLE_PTH)
	pth_kill();
#endif
}

/* Return the library version number */
const SDL_version * SDL_Linked_Version(void)
{
	return(&version);
}

#if defined(_WIN32_WCE) || (defined(__WATCOMC__) && defined(BUILD_DLL))
/* Need to include DllMain() on Windows CE and Watcom C 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 and building DLL with Watcom C */