120 lines
2.5 KiB
C++
120 lines
2.5 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file sdl.cpp Implementation of SDL support. */
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#include "stdafx.h"
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#ifdef WITH_SDL
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#include "sdl.h"
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#include <SDL.h>
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/** Number of users of the SDL library. */
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static int _sdl_usage;
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#ifdef DYNAMICALLY_LOADED_SDL
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#include "os/windows/win32.h"
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#define M(x) x "\0"
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static const char sdl_files[] =
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M("sdl.dll")
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M("SDL_Init")
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M("SDL_InitSubSystem")
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M("SDL_GetError")
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M("SDL_QuitSubSystem")
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M("SDL_UpdateRect")
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M("SDL_UpdateRects")
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M("SDL_SetColors")
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M("SDL_WM_SetCaption")
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M("SDL_ShowCursor")
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M("SDL_FreeSurface")
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M("SDL_PollEvent")
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M("SDL_WarpMouse")
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M("SDL_GetTicks")
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M("SDL_OpenAudio")
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M("SDL_PauseAudio")
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M("SDL_CloseAudio")
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M("SDL_LockSurface")
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M("SDL_UnlockSurface")
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M("SDL_GetModState")
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M("SDL_Delay")
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M("SDL_Quit")
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M("SDL_SetVideoMode")
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M("SDL_EnableKeyRepeat")
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M("SDL_EnableUNICODE")
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M("SDL_VideoDriverName")
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M("SDL_ListModes")
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M("SDL_GetKeyState")
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M("SDL_LoadBMP_RW")
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M("SDL_RWFromFile")
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M("SDL_SetColorKey")
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M("SDL_WM_SetIcon")
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M("SDL_MapRGB")
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M("SDL_VideoModeOK")
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M("SDL_Linked_Version")
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M("")
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;
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#undef M
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SDLProcs sdl_proc;
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static const char *LoadSdlDLL()
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{
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if (sdl_proc.SDL_Init != NULL) {
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return NULL;
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}
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if (!LoadLibraryList((Function *)(void *)&sdl_proc, sdl_files)) {
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return "Unable to load sdl.dll";
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}
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return NULL;
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}
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#endif /* DYNAMICALLY_LOADED_SDL */
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#include "safeguards.h"
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/**
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* Open the SDL library.
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* @param x The subsystem to load.
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*/
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const char *SdlOpen(uint32 x)
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{
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#ifdef DYNAMICALLY_LOADED_SDL
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{
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const char *s = LoadSdlDLL();
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if (s != NULL) return s;
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}
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#endif
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if (_sdl_usage++ == 0) {
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if (SDL_CALL SDL_Init(x | SDL_INIT_NOPARACHUTE) == -1) return SDL_CALL SDL_GetError();
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} else if (x != 0) {
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if (SDL_CALL SDL_InitSubSystem(x) == -1) return SDL_CALL SDL_GetError();
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}
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return NULL;
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}
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/**
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* Close the SDL library.
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* @param x The subsystem to close.
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*/
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void SdlClose(uint32 x)
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{
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if (x != 0) {
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SDL_CALL SDL_QuitSubSystem(x);
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}
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if (--_sdl_usage == 0) {
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SDL_CALL SDL_Quit();
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}
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}
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#endif
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