source/mupen64plus-audio-sdl/src/osal_dynamiclib_win32.c

   1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   2  *   Mupen64plus-ui-console - osal_dynamiclib_win32.c                      *
   3  *   Mupen64Plus homepage: http://code.google.com/p/mupen64plus/           *
   4  *   Copyright (C) 2009 Richard Goedeken                                   *
   5  *                                                                         *
   6  *   This program is free software; you can redistribute it and/or modify  *
   7  *   it under the terms of the GNU General Public License as published by  *
   8  *   the Free Software Foundation; either version 2 of the License, or     *
   9  *   (at your option) any later version.                                   *
  10  *                                                                         *
  11  *   This program is distributed in the hope that it will be useful,       *
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  14  *   GNU General Public License for more details.                          *
  15  *                                                                         *
  16  *   You should have received a copy of the GNU General Public License     *
  17  *   along with this program; if not, write to the                         *
  18  *   Free Software Foundation, Inc.,                                       *
  19  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
  20  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  21
  22 #include <windows.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25
  26 #include "m64p_types.h"
  27 #include "osal_dynamiclib.h"
  28
  29 m64p_error osal_dynlib_open(m64p_dynlib_handle *pLibHandle, const char *pccLibraryPath)
  30 {
  31     if (pLibHandle == NULL || pccLibraryPath == NULL)
  32         return M64ERR_INPUT_ASSERT;
  33
  34     *pLibHandle = LoadLibrary(pccLibraryPath);
  35
  36     if (*pLibHandle == NULL)
  37     {
  38         char *pchErrMsg;
  39         DWORD dwErr = GetLastError();
  40         FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, dwErr,
  41                       MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &pchErrMsg, 0, NULL);
  42         fprintf(stderr, "LoadLibrary('%s') error: %s\n", pccLibraryPath, pchErrMsg);
  43         LocalFree(pchErrMsg);
  44         return M64ERR_INPUT_NOT_FOUND;
  45     }
  46
  47     return M64ERR_SUCCESS;
  48 }
  49
  50 void * osal_dynlib_getproc(m64p_dynlib_handle LibHandle, const char *pccProcedureName)
  51 {
  52     if (pccProcedureName == NULL)
  53         return NULL;
  54
  55     return GetProcAddress(LibHandle, pccProcedureName);
  56 }
  57
  58 m64p_error osal_dynlib_close(m64p_dynlib_handle LibHandle)
  59 {
  60     int rval = FreeLibrary(LibHandle);
  61
  62     if (rval == 0)
  63     {
  64         char *pchErrMsg;
  65         DWORD dwErr = GetLastError();
  66         FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, dwErr,
  67                       MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &pchErrMsg, 0, NULL);
  68         fprintf(stderr, "FreeLibrary() error: %s\n", pchErrMsg);
  69         LocalFree(pchErrMsg);
  70         return M64ERR_INTERNAL;
  71     }
  72
  73     return M64ERR_SUCCESS;
  74 }