cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

SDL_DirectFB_dyn.c (3654B)

      1/*
      2  Simple DirectMedia Layer
      3  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
      4
      5  This software is provided 'as-is', without any express or implied
      6  warranty.  In no event will the authors be held liable for any damages
      7  arising from the use of this software.
      8
      9  Permission is granted to anyone to use this software for any purpose,
     10  including commercial applications, and to alter it and redistribute it
     11  freely, subject to the following restrictions:
     12
     13  1. The origin of this software must not be misrepresented; you must not
     14     claim that you wrote the original software. If you use this software
     15     in a product, an acknowledgment in the product documentation would be
     16     appreciated but is not required.
     17  2. Altered source versions must be plainly marked as such, and must not be
     18     misrepresented as being the original software.
     19  3. This notice may not be removed or altered from any source distribution.
     20*/
     21#include "../../SDL_internal.h"
     22
     23#if SDL_VIDEO_DRIVER_DIRECTFB
     24
     25#include "SDL_DirectFB_video.h"
     26#include "SDL_DirectFB_dyn.h"
     27
     28#ifdef SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC
     29#include "SDL_name.h"
     30#include "SDL_loadso.h"
     31
     32#define DFB_SYM(ret, name, args, al, func) ret (*name) args;
     33static struct _SDL_DirectFB_Symbols
     34{
     35    DFB_SYMS
     36    const unsigned int *directfb_major_version;
     37    const unsigned int *directfb_minor_version;
     38    const unsigned int *directfb_micro_version;
     39} SDL_DirectFB_Symbols;
     40#undef DFB_SYM
     41
     42#define DFB_SYM(ret, name, args, al, func) ret name args { func SDL_DirectFB_Symbols.name al  ; }
     43DFB_SYMS
     44#undef DFB_SYM
     45
     46static void *handle = NULL;
     47
     48int
     49SDL_DirectFB_LoadLibrary(void)
     50{
     51    int retval = 0;
     52
     53    if (handle == NULL) {
     54        handle = SDL_LoadObject(SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC);
     55        if (handle != NULL) {
     56            retval = 1;
     57#define DFB_SYM(ret, name, args, al, func) if (!(SDL_DirectFB_Symbols.name = SDL_LoadFunction(handle, # name))) retval = 0;
     58            DFB_SYMS
     59#undef DFB_SYM
     60            if (!
     61                    (SDL_DirectFB_Symbols.directfb_major_version =
     62                     SDL_LoadFunction(handle, "directfb_major_version")))
     63                retval = 0;
     64            if (!
     65                (SDL_DirectFB_Symbols.directfb_minor_version =
     66                 SDL_LoadFunction(handle, "directfb_minor_version")))
     67                retval = 0;
     68            if (!
     69                (SDL_DirectFB_Symbols.directfb_micro_version =
     70                 SDL_LoadFunction(handle, "directfb_micro_version")))
     71                retval = 0;
     72        }
     73    }
     74    if (retval) {
     75        const char *stemp = DirectFBCheckVersion(DIRECTFB_MAJOR_VERSION,
     76                                                 DIRECTFB_MINOR_VERSION,
     77                                                 DIRECTFB_MICRO_VERSION);
     78        /* Version Check */
     79        if (stemp != NULL) {
     80            fprintf(stderr,
     81                    "DirectFB Lib: Version mismatch. Compiled: %d.%d.%d Library %d.%d.%d\n",
     82                    DIRECTFB_MAJOR_VERSION, DIRECTFB_MINOR_VERSION,
     83                    DIRECTFB_MICRO_VERSION,
     84                    *SDL_DirectFB_Symbols.directfb_major_version,
     85                    *SDL_DirectFB_Symbols.directfb_minor_version,
     86                    *SDL_DirectFB_Symbols.directfb_micro_version);
     87            retval = 0;
     88        }
     89    }
     90    if (!retval)
     91        SDL_DirectFB_UnLoadLibrary();
     92    return retval;
     93}
     94
     95void
     96SDL_DirectFB_UnLoadLibrary(void)
     97{
     98    if (handle != NULL) {
     99        SDL_UnloadObject(handle);
    100        handle = NULL;
    101    }
    102}
    103
    104#else
    105int
    106SDL_DirectFB_LoadLibrary(void)
    107{
    108    return 1;
    109}
    110
    111void
    112SDL_DirectFB_UnLoadLibrary(void)
    113{
    114}
    115#endif
    116
    117#endif /* SDL_VIDEO_DRIVER_DIRECTFB */