Files @ r3303:1bae0f5399a4
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Location: cpp/openttd-patchpack/source/sdl.c

bjarni
(svn r4060) -Codechange: [OSX] made the release target (in os/macosx/Makefile) easier to use since it gives the release disk image the right name automatically
it now uses REV instead of RELEASE, which means RELEASE is not needed to be set manaully anymore
it also automatically adds "-jaguar" when making a build aimed at OSX 10.2 (codenamed jaguar)
/* $Id$ */

#include "stdafx.h"

#ifdef WITH_SDL

#include "openttd.h"
#include "sdl.h"
#include <SDL.h>

#ifdef UNIX
#include <signal.h>

#ifdef __MORPHOS__
	// The system supplied definition of SIG_DFL is wrong on MorphOS
	#undef SIG_DFL
	#define SIG_DFL (void (*)(int))0
#endif
#endif

static int _sdl_usage;

#ifdef DYNAMICALLY_LOADED_SDL

#include "win32.h"

#define M(x) x "\0"
static const char sdl_files[] =
	M("sdl.dll")
	M("SDL_Init")
	M("SDL_InitSubSystem")
	M("SDL_GetError")
	M("SDL_QuitSubSystem")
	M("SDL_UpdateRect")
	M("SDL_UpdateRects")
	M("SDL_SetColors")
	M("SDL_WM_SetCaption")
	M("SDL_ShowCursor")
	M("SDL_FreeSurface")
	M("SDL_PollEvent")
	M("SDL_WarpMouse")
	M("SDL_GetTicks")
	M("SDL_OpenAudio")
	M("SDL_PauseAudio")
	M("SDL_CloseAudio")
	M("SDL_LockSurface")
	M("SDL_UnlockSurface")
	M("SDL_GetModState")
	M("SDL_Delay")
	M("SDL_Quit")
	M("SDL_SetVideoMode")
	M("SDL_EnableKeyRepeat")
	M("SDL_EnableUNICODE")
	M("SDL_VideoDriverName")
	M("SDL_ListModes")
	M("SDL_GetKeyState")
	M("")
;
#undef M

SDLProcs sdl_proc;

static const char *LoadSdlDLL(void)
{
	if (sdl_proc.SDL_Init != NULL)
		return NULL;
	if (!LoadLibraryList((Function *)(void *)&sdl_proc, sdl_files))
		return "Unable to load sdl.dll";
	return NULL;
}

#endif // DYNAMICALLY_LOADED_SDL


#ifdef UNIX
static void SdlAbort(int sig)
{
	/* Own hand-made parachute for the cases of failed assertions. */
	SDL_CALL SDL_Quit();

	switch (sig) {
		case SIGSEGV:
		case SIGFPE:
			signal(sig, SIG_DFL);
			raise(sig);
			break;

		default:
			break;
	}
}
#endif


const char* SdlOpen(uint32 x)
{
#ifdef DYNAMICALLY_LOADED_SDL
	{
		const char *s = LoadSdlDLL();
		if (s != NULL) return s;
	}
#endif
	if (_sdl_usage++ == 0) {
		if (SDL_CALL SDL_Init(x) == -1)
			return SDL_CALL SDL_GetError();
	} else if (x != 0) {
		if (SDL_CALL SDL_InitSubSystem(x) == -1)
			return SDL_CALL SDL_GetError();
	}

#ifdef UNIX
	signal(SIGABRT, SdlAbort);
	signal(SIGSEGV, SdlAbort);
	signal(SIGFPE, SdlAbort);
#endif

	return NULL;
}

void SdlClose(uint32 x)
{
	if (x != 0)
		SDL_CALL SDL_QuitSubSystem(x);
	if (--_sdl_usage == 0) {
		SDL_CALL SDL_Quit();
		#ifdef UNIX
		signal(SIGABRT, SIG_DFL);
		signal(SIGSEGV, SIG_DFL);
		signal(SIGFPE, SIG_DFL);
		#endif
	}
}

#endif