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("SDL_VideoModeOK")
00065 M("")
00066 ;
00067 #undef M
00068
00069 SDLProcs sdl_proc;
00070
00071 static const char *LoadSdlDLL()
00072 {
00073 if (sdl_proc.SDL_Init != NULL)
00074 return NULL;
00075 if (!LoadLibraryList((Function *)(void *)&sdl_proc, sdl_files))
00076 return "Unable to load sdl.dll";
00077 return NULL;
00078 }
00079
00080 #endif
00081
00082
00083 #ifdef UNIX
00084 static void SdlAbort(int sig)
00085 {
00086
00087 SDL_CALL SDL_Quit();
00088
00089 switch (sig) {
00090 case SIGSEGV:
00091 case SIGFPE:
00092 signal(sig, SIG_DFL);
00093 raise(sig);
00094 break;
00095
00096 default:
00097 break;
00098 }
00099 }
00100 #endif
00101
00102
00103 const char *SdlOpen(uint32 x)
00104 {
00105 #ifdef DYNAMICALLY_LOADED_SDL
00106 {
00107 const char *s = LoadSdlDLL();
00108 if (s != NULL) return s;
00109 }
00110 #endif
00111 if (_sdl_usage++ == 0) {
00112 if (SDL_CALL SDL_Init(x) == -1)
00113 return SDL_CALL SDL_GetError();
00114 } else if (x != 0) {
00115 if (SDL_CALL SDL_InitSubSystem(x) == -1)
00116 return SDL_CALL SDL_GetError();
00117 }
00118
00119 #ifdef UNIX
00120 signal(SIGABRT, SdlAbort);
00121 signal(SIGSEGV, SdlAbort);
00122 signal(SIGFPE, SdlAbort);
00123 #endif
00124
00125 return NULL;
00126 }
00127
00128 void SdlClose(uint32 x)
00129 {
00130 if (x != 0)
00131 SDL_CALL SDL_QuitSubSystem(x);
00132 if (--_sdl_usage == 0) {
00133 SDL_CALL SDL_Quit();
00134 #ifdef UNIX
00135 signal(SIGABRT, SIG_DFL);
00136 signal(SIGSEGV, SIG_DFL);
00137 signal(SIGFPE, SIG_DFL);
00138 #endif
00139 }
00140 }
00141
00142 #endif