Mercurial > sdl-ios-xcode
view src/SDL_loadso.c @ 641:df178851293b
Date: 28 Jun 2003 22:42:52 +0100
From: Alan Swanson
Subject: Re: [SDL] New XFree 4.3 Video Mode Patch
I have a wee amendment that moves the qsort in set_best_resolution
to only occur after failing to find an exact match only. This would
make absolutely sure we get a user set mode.
While I've never had any problems for my normal resolutions (1280x1024,
1024x768, 800x600 & 640,480) while closely examining the output from
qsort I've noticed it doesn't seem to sort the modes fully. These is
one definite wrong at 1152x768 and a few that just look wrong to me.
From a program (attached) I made to examine this more easily. X has
sorted its mode list using the same method as ours (plus frequency),
and our user modes get inserted without any other movement.
On the patch I've made I've also changed cmpmodes to sort on vertical
resolution and then horizontal. Ie vertical is now most significant
bit.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sat, 28 Jun 2003 21:52:26 +0000 |
parents | 745873ea091f |
children | 35ff0890ac4e |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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> #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: 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); } #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"; } #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; #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) /* * */ CFragConnectionID library_id = (CFragConnectionID)handle; CloseConnection(library_id); #endif /* system type */ }