sdl.cpp
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00002
00005 #include "stdafx.h"
00006
00007 #ifdef WITH_SDL
00008
00009 #include "openttd.h"
00010 #include "sdl.h"
00011 #include <SDL.h>
00012
00013 #ifdef UNIX
00014 #include <signal.h>
00015
00016 #ifdef __MORPHOS__
00017
00018 #undef SIG_DFL
00019 #define SIG_DFL (void (*)(int))0
00020 #endif
00021 #endif
00022
00023 static int _sdl_usage;
00024
00025 #ifdef DYNAMICALLY_LOADED_SDL
00026
00027 #include "win32.h"
00028
00029 #define M(x) x "\0"
00030 static const char sdl_files[] =
00031 M("sdl.dll")
00032 M("SDL_Init")
00033 M("SDL_InitSubSystem")
00034 M("SDL_GetError")
00035 M("SDL_QuitSubSystem")
00036 M("SDL_UpdateRect")
00037 M("SDL_UpdateRects")
00038 M("SDL_SetColors")
00039 M("SDL_WM_SetCaption")
00040 M("SDL_ShowCursor")
00041 M("SDL_FreeSurface")
00042 M("SDL_PollEvent")
00043 M("SDL_WarpMouse")
00044 M("SDL_GetTicks")
00045 M("SDL_OpenAudio")
00046 M("SDL_PauseAudio")
00047 M("SDL_CloseAudio")
00048 M("SDL_LockSurface")
00049 M("SDL_UnlockSurface")
00050 M("SDL_GetModState")
00051 M("SDL_Delay")
00052 M("SDL_Quit")
00053 M("SDL_SetVideoMode")
00054 M("SDL_EnableKeyRepeat")
00055 M("SDL_EnableUNICODE")
00056 M("SDL_VideoDriverName")
00057 M("SDL_ListModes")
00058 M("SDL_GetKeyState")
00059 M("SDL_LoadBMP_RW")
00060 M("SDL_RWFromFile")
00061 M("SDL_SetColorKey")
00062 M("SDL_WM_SetIcon")
00063 M("SDL_MapRGB")
00064 M("")
00065 ;
00066 #undef M
00067
00068 SDLProcs sdl_proc;
00069
00070 static const char *LoadSdlDLL()
00071 {
00072 if (sdl_proc.SDL_Init != NULL)
00073 return NULL;
00074 if (!LoadLibraryList((Function *)(void *)&sdl_proc, sdl_files))
00075 return "Unable to load sdl.dll";
00076 return NULL;
00077 }
00078
00079 #endif // DYNAMICALLY_LOADED_SDL
00080
00081
00082 #ifdef UNIX
00083 static void SdlAbort(int sig)
00084 {
00085
00086 SDL_CALL SDL_Quit();
00087
00088 switch (sig) {
00089 case SIGSEGV:
00090 case SIGFPE:
00091 signal(sig, SIG_DFL);
00092 raise(sig);
00093 break;
00094
00095 default:
00096 break;
00097 }
00098 }
00099 #endif
00100
00101
00102 const char *SdlOpen(uint32 x)
00103 {
00104 #ifdef DYNAMICALLY_LOADED_SDL
00105 {
00106 const char *s = LoadSdlDLL();
00107 if (s != NULL) return s;
00108 }
00109 #endif
00110 if (_sdl_usage++ == 0) {
00111 if (SDL_CALL SDL_Init(x) == -1)
00112 return SDL_CALL SDL_GetError();
00113 } else if (x != 0) {
00114 if (SDL_CALL SDL_InitSubSystem(x) == -1)
00115 return SDL_CALL SDL_GetError();
00116 }
00117
00118 #ifdef UNIX
00119 signal(SIGABRT, SdlAbort);
00120 signal(SIGSEGV, SdlAbort);
00121 signal(SIGFPE, SdlAbort);
00122 #endif
00123
00124 return NULL;
00125 }
00126
00127 void SdlClose(uint32 x)
00128 {
00129 if (x != 0)
00130 SDL_CALL SDL_QuitSubSystem(x);
00131 if (--_sdl_usage == 0) {
00132 SDL_CALL SDL_Quit();
00133 #ifdef UNIX
00134 signal(SIGABRT, SIG_DFL);
00135 signal(SIGSEGV, SIG_DFL);
00136 signal(SIGFPE, SIG_DFL);
00137 #endif
00138 }
00139 }
00140
00141 #endif