OpenAL32/OpenAL32.c

   1 /**
   2  * OpenAL cross platform audio library
   3  * Copyright (C) 1999-2007 by authors.
   4  * This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  *  License along with this library; if not, write to the
  16  *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  *  Boston, MA  02111-1307, USA.
  18  * Or go to http://www.gnu.org/copyleft/lgpl.html
  19  */
  20
  21 #include "alMain.h"
  22 #include "alBuffer.h"
  23 #include "alThunk.h"
  24
  25 CRITICAL_SECTION g_mutex;
  26
  27 #ifdef _WIN32
  28 BOOL APIENTRY DllMain(HANDLE hModule,DWORD ul_reason_for_call,LPVOID lpReserved)
  29 {
  30     (void)lpReserved;
  31
  32     // Perform actions based on the reason for calling.
  33     switch(ul_reason_for_call)
  34     {
  35         case DLL_PROCESS_ATTACH:
  36             DisableThreadLibraryCalls(hModule);
  37             InitializeCriticalSection(&g_mutex);
  38             ALTHUNK_INIT();
  39             ReadALConfig();
  40             break;
  41
  42         case DLL_PROCESS_DETACH:
  43             ReleaseALBuffers();
  44             FreeALConfig();
  45             ALTHUNK_EXIT();
  46             DeleteCriticalSection(&g_mutex);
  47             break;
  48     }
  49     return TRUE;
  50 }
  51 #else
  52 static void my_init() __attribute__((constructor));
  53 static void my_init()
  54 {
  55     static ALenum once = AL_FALSE;
  56     if(once) return;
  57     once = AL_TRUE;
  58
  59     InitializeCriticalSection(&g_mutex);
  60     ALTHUNK_INIT();
  61     ReadALConfig();
  62 }
  63 static void my_deinit() __attribute__((destructor));
  64 static void my_deinit()
  65 {
  66     static ALenum once = AL_FALSE;
  67     if(once) return;
  68     once = AL_TRUE;
  69
  70     ReleaseALBuffers();
  71     FreeALConfig();
  72     ALTHUNK_EXIT();
  73     DeleteCriticalSection(&g_mutex);
  74 }
  75 #endif