Mercurial > sdl-ios-xcode
diff src/video/directfb/SDL_DirectFB_dyn.c @ 3000:61081db2385a
Whoops, missing files from Couriersud's update
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 05 Jan 2009 01:48:15 +0000 |
parents | |
children | d72a0dd80e8b |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/directfb/SDL_DirectFB_dyn.c Mon Jan 05 01:48:15 2009 +0000 @@ -0,0 +1,112 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2009 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +#include "SDL_DirectFB_dyn.h" +#include "SDL_DirectFB_video.h" + +#ifdef SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC +#include "SDL_name.h" +#include "SDL_loadso.h" + +#define DFB_SYM(ret, name, args, al, func) ret (*name) args; +static struct _SDL_DirectFB_Symbols +{ + DFB_SYMS const unsigned int *directfb_major_version; + const unsigned int *directfb_minor_version; + const unsigned int *directfb_micro_version; +} SDL_DirectFB_Symbols; +#undef DFB_SYM + +#define DFB_SYM(ret, name, args, al, func) ret name args { func SDL_DirectFB_Symbols.name al ; } +DFB_SYMS +#undef DFB_SYM +static void *handle = NULL; + +int +SDL_DirectFB_LoadLibrary(void) +{ + int retval = 0; + + if (handle == NULL) { + handle = SDL_LoadObject(SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC); + if (handle != NULL) { + retval = 1; +#define DFB_SYM(ret, name, args, al, func) if (!(SDL_DirectFB_Symbols.name = SDL_LoadFunction(handle, # name))) retval = 0; + DFB_SYMS +#undef DFB_SYM + if (! + (SDL_DirectFB_Symbols.directfb_major_version = + SDL_LoadFunction(handle, "directfb_major_version"))) + retval = 0; + if (! + (SDL_DirectFB_Symbols.directfb_minor_version = + SDL_LoadFunction(handle, "directfb_minor_version"))) + retval = 0; + if (! + (SDL_DirectFB_Symbols.directfb_micro_version = + SDL_LoadFunction(handle, "directfb_micro_version"))) + retval = 0; + } + } + if (retval) { + /* Version Check */ + if ((*SDL_DirectFB_Symbols.directfb_major_version != + DIRECTFB_MAJOR_VERSION) + || (*SDL_DirectFB_Symbols.directfb_minor_version != + DIRECTFB_MINOR_VERSION)) { + fprintf(stderr, + "DirectFB Lib: Version mismatch. Compiled: %d.%d.%d Library %d.%d.%d\n", + DIRECTFB_MAJOR_VERSION, DIRECTFB_MINOR_VERSION, + DIRECTFB_MICRO_VERSION, + *SDL_DirectFB_Symbols.directfb_major_version, + *SDL_DirectFB_Symbols.directfb_minor_version, + *SDL_DirectFB_Symbols.directfb_micro_version); + retval = 0; + } + } + if (!retval) + SDL_DirectFB_UnLoadLibrary(); + return retval; +} + +void +SDL_DirectFB_UnLoadLibrary(void) +{ + if (handle != NULL) { + SDL_UnloadObject(handle); + handle = NULL; + } +} + +#else +int +SDL_DirectFB_LoadLibrary(void) +{ + return 1; +} + +void +SDL_DirectFB_UnLoadLibrary(void) +{ +} +#endif