/* $Id$ */ /* * This file is part of OpenTTD. * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. * OpenTTD 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 General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. */ /** @file sdl.cpp Implementation of SDL support. */ #include "stdafx.h" #ifdef WITH_SDL #include "sdl.h" #include <SDL.h> /** Number of users of the SDL library. */ static int _sdl_usage; #ifdef DYNAMICALLY_LOADED_SDL #include "os/windows/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("SDL_VideoModeOK") M("SDL_Linked_Version") 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 */ /** * Open the SDL library. * @param x The subsystem to load. */ 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 | SDL_INIT_NOPARACHUTE) == -1) return SDL_CALL SDL_GetError(); } else if (x != 0) { if (SDL_CALL SDL_InitSubSystem(x) == -1) return SDL_CALL SDL_GetError(); } return NULL; } /** * Close the SDL library. * @param x The subsystem to close. */ void SdlClose(uint32 x) { if (x != 0) { SDL_CALL SDL_QuitSubSystem(x); } if (--_sdl_usage == 0) { SDL_CALL SDL_Quit(); } } #endif