/** * OpenAL cross platform audio library * Copyright (C) 1999-2007 by authors. * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * Or go to http://www.gnu.org/copyleft/lgpl.html */ #include #include "alMain.h" #include "alThunk.h" typedef struct { ALvoid *ptr; ALboolean InUse; } ThunkEntry; static ThunkEntry *g_ThunkArray; static ALuint g_ThunkArraySize; static CRITICAL_SECTION g_ThunkLock; void alThunkInit(void) { InitializeCriticalSection(&g_ThunkLock); g_ThunkArraySize = 1; g_ThunkArray = calloc(1, g_ThunkArraySize * sizeof(ThunkEntry)); } void alThunkExit(void) { free(g_ThunkArray); g_ThunkArray = NULL; g_ThunkArraySize = 0; DeleteCriticalSection(&g_ThunkLock); } ALuint alThunkAddEntry(ALvoid *ptr) { ALuint index; EnterCriticalSection(&g_ThunkLock); for(index = 0;index < g_ThunkArraySize;index++) { if(g_ThunkArray[index].InUse == AL_FALSE) break; } if(index == g_ThunkArraySize) { ThunkEntry *NewList; NewList = realloc(g_ThunkArray, g_ThunkArraySize*2 * sizeof(ThunkEntry)); if(!NewList) { LeaveCriticalSection(&g_ThunkLock); return 0; } memset(&NewList[g_ThunkArraySize], 0, g_ThunkArraySize*sizeof(ThunkEntry)); g_ThunkArraySize *= 2; g_ThunkArray = NewList; } g_ThunkArray[index].ptr = ptr; g_ThunkArray[index].InUse = AL_TRUE; LeaveCriticalSection(&g_ThunkLock); return index+1; } void alThunkRemoveEntry(ALuint index) { EnterCriticalSection(&g_ThunkLock); if(index > 0 && index <= g_ThunkArraySize) g_ThunkArray[index-1].InUse = AL_FALSE; LeaveCriticalSection(&g_ThunkLock); } ALvoid *alThunkLookupEntry(ALuint index) { ALvoid *ptr = NULL; EnterCriticalSection(&g_ThunkLock); if(index > 0 && index <= g_ThunkArraySize) ptr = g_ThunkArray[index-1].ptr; LeaveCriticalSection(&g_ThunkLock); return ptr; }