This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_DirectFB_dyn.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2011 Sam Lantinga
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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
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SDL1.3 DirectFB driver by couriersud@arcor.de
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#include "SDL_config.h"
#include "SDL_DirectFB_video.h"
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#include "SDL_DirectFB_dyn.h"
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#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
{
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DFB_SYMS
const unsigned int *directfb_major_version;
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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
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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
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(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) {
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const char *stemp = DirectFBCheckVersion(DIRECTFB_MAJOR_VERSION,
DIRECTFB_MINOR_VERSION,
DIRECTFB_MICRO_VERSION);
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/* Version Check */
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if (stemp != NULL) {
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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