/* $Id$ */ /** @file sdl.cpp Implementation of SDL support. */ #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("SDL_LoadBMP_RW") M("SDL_RWFromFile") M("SDL_SetColorKey") M("SDL_WM_SetIcon") M("SDL_MapRGB") M("") ; #undef M SDLProcs sdl_proc; static const char *LoadSdlDLL() { 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