Mercurial > sdl-ios-xcode
view src/SDL_loadso.c @ 937:1e6366bde299
Date: Tue, 27 Jul 2004 17:14:00 +0200
From: "Eckhard Stolberg"
Subject: Controller names in SDL for Windows
I'm working on an Atari 2600 emulator for different systems that uses
the SDL. Some time ago someone created an adaptor that lets you use
your old Atari controllers with your computer through the USB port.
Some of the Atari controllers require special handling by the emulator,
so it would be nice, if it would be possible to detect if any of the
controllers connected to the computer is this adaptor.
SDL would allow that with the SDL_JoystickName function, but unfortunately
it doesn't work properly on Windows. On Linux and MacOSX this function
returns the name of the controller, but on Windows you'll only get the
name of the joystick driver. Most joysticks nowadays use the generic
Microsoft driver, so they all return the same name.
In an old MSDN article
(http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/dnarinput/html/msdn_extdirect.asp)
Microsoft describes how to read out the OEM controller names from the registry.
I have implemented this for the SDL controller handler on Windows,
and now reading the joystick name works properly there too.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sat, 21 Aug 2004 03:45:58 +0000 |
parents | 0c3e00cc9580 |
children | cf6133247d34 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /* System dependent library loading routines */ #include <stdio.h> #if defined(USE_DLOPEN) # include <dlfcn.h> #elif defined(WIN32) # include <windows.h> #elif defined(__BEOS__) # include <be/kernel/image.h> #elif defined(macintosh) # include <string.h> # include <Strings.h> # include <CodeFragments.h> # include <Errors.h> #elif defined(__MINT__) && defined(ENABLE_LDG) # include <gem.h> # include <ldg.h> #else /*#error Unsupported dynamic link environment*/ #endif /* system type */ #include "SDL_types.h" #include "SDL_error.h" #include "SDL_loadso.h" void *SDL_LoadObject(const char *sofile) { void *handle = NULL; const char *loaderror = "SDL_LoadObject() not implemented"; #if defined(USE_DLOPEN) /* * */ handle = dlopen(sofile, RTLD_NOW); loaderror = (char *)dlerror(); #elif defined(WIN32) /* * */ char errbuf[512]; handle = (void *)LoadLibrary(sofile); /* Generate an error message if all loads failed */ if ( handle == NULL ) { FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM), NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errbuf, SDL_TABLESIZE(errbuf), NULL); loaderror = errbuf; } #elif defined(__BEOS__) /* * */ image_id library_id; library_id = load_add_on(sofile); if ( library_id == B_ERROR ) { loaderror = "BeOS error"; } else { handle = (void *)(library_id); } #elif defined(macintosh) /* * */ CFragConnectionID library_id; Ptr mainAddr; Str255 errName; OSErr error; char psofile[512]; strncpy(psofile, sofile, SDL_TABLESIZE(psofile)); psofile[SDL_TABLESIZE(psofile)-1] = '\0'; error = GetSharedLibrary(C2PStr(psofile), kCompiledCFragArch, kLoadCFrag, &library_id, &mainAddr, errName); switch (error) { case noErr: loaderror = NULL; break; case cfragNoLibraryErr: loaderror = "Library not found"; break; case cfragUnresolvedErr: loaderror = "Unabled to resolve symbols"; break; case cfragNoPrivateMemErr: case cfragNoClientMemErr: loaderror = "Out of memory"; break; default: loaderror = "Unknown Code Fragment Manager error"; break; } if ( loaderror == NULL ) { handle = (void *)(library_id); } #elif defined(__MINT__) && defined(ENABLE_LDG) /* * */ handle = (void *)ldg_open((char *)sofile, ldg_global); #endif /* system type */ if ( handle == NULL ) { SDL_SetError("Failed loading %s: %s", sofile, loaderror); } return(handle); } void *SDL_LoadFunction(void *handle, const char *name) { void *symbol = NULL; const char *loaderror = "SDL_LoadFunction not implemented"; #if defined(USE_DLOPEN) /* * */ symbol = dlsym(handle, name); if ( symbol == NULL ) { loaderror = (char *)dlerror(); } #elif defined(WIN32) /* * */ char errbuf[512]; symbol = (void *)GetProcAddress((HMODULE)handle, name); if ( symbol == NULL ) { FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM), NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errbuf, SDL_TABLESIZE(errbuf), NULL); loaderror = errbuf; } #elif defined(__BEOS__) /* * */ image_id library_id = (image_id)handle; if ( get_image_symbol(library_id, name, B_SYMBOL_TYPE_TEXT, &symbol) != B_NO_ERROR ) { loaderror = "Symbol not found"; } #elif defined(macintosh) /* * */ CFragSymbolClass class; CFragConnectionID library_id = (CFragConnectionID)handle; char pname[512]; strncpy(pname, name, SDL_TABLESIZE(pname)); pname[SDL_TABLESIZE(pname)-1] = '\0'; if ( FindSymbol(library_id, C2PStr(pname), (char **)&symbol, &class) != noErr ) { loaderror = "Symbol not found"; } #elif defined(__MINT__) && defined(ENABLE_LDG) /* * */ symbol = (void *)ldg_find((char *)name, (LDG *)handle); #endif /* system type */ if ( symbol == NULL ) { SDL_SetError("Failed loading %s: %s", name, loaderror); } return(symbol); } void SDL_UnloadObject(void *handle) { #if defined(__BEOS__) image_id library_id; #elif defined(macintosh) CFragConnectionID library_id; #endif if ( handle == NULL ) { return; } #if defined(USE_DLOPEN) /* * */ dlclose(handle); #elif defined(WIN32) /* * */ FreeLibrary((HMODULE)handle); #elif defined(__BEOS__) /* * */ library_id = (image_id)handle; unload_add_on(library_id); #elif defined(macintosh) /* * */ library_id = (CFragConnectionID)handle; CloseConnection(&library_id); #elif defined(__MINT__) && defined(ENABLE_LDG) /* * */ ldg_close((LDG *)handle, ldg_global); #endif /* system type */ }