kc3-lang/SDL/src/video/directfb/SDL_DirectFB_dyn.c

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• Hash : 3dcb451f
  Author :
  Date : 2014-04-09T21:29:19
  

  Added a README file regarding WinRT support To note, this file is currently formatted with CRLF line endings, rather than LF, to allow the file to be viewed with Notepad.

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• src/video/directfb/SDL_DirectFB_dyn.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  #include "../../SDL_internal.h"
  
  #if SDL_VIDEO_DRIVER_DIRECTFB
  
  #include "SDL_DirectFB_video.h"
  #include "SDL_DirectFB_dyn.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) {
          const char *stemp = DirectFBCheckVersion(DIRECTFB_MAJOR_VERSION,
                                                   DIRECTFB_MINOR_VERSION,
                                                   DIRECTFB_MICRO_VERSION);
          /* Version Check */
          if (stemp != NULL) {
              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
  
  #endif /* SDL_VIDEO_DRIVER_DIRECTFB */
  

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