--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/sdl.cpp Wed Jan 10 18:12:09 2007 +0000
@@ -0,0 +1,139 @@
+/* $Id$ */
+
+#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(void)
+{
+ 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