rlm@0: /**
rlm@0:  * OpenAL cross platform audio library
rlm@0:  * Copyright (C) 1999-2007 by authors.
rlm@0:  * This library is free software; you can redistribute it and/or
rlm@0:  *  modify it under the terms of the GNU Library General Public
rlm@0:  *  License as published by the Free Software Foundation; either
rlm@0:  *  version 2 of the License, or (at your option) any later version.
rlm@0:  *
rlm@0:  * This library is distributed in the hope that it will be useful,
rlm@0:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
rlm@0:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
rlm@0:  *  Library General Public License for more details.
rlm@0:  *
rlm@0:  * You should have received a copy of the GNU Library General Public
rlm@0:  *  License along with this library; if not, write to the
rlm@0:  *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
rlm@0:  *  Boston, MA  02111-1307, USA.
rlm@0:  * Or go to http://www.gnu.org/copyleft/lgpl.html
rlm@0:  */
rlm@0: 
rlm@0: #include "config.h"
rlm@0: 
rlm@0: #include <stdlib.h>
rlm@0: 
rlm@0: #include "alMain.h"
rlm@0: #include "alThunk.h"
rlm@0: 
rlm@0: 
rlm@0: static ALboolean  *ThunkArray;
rlm@0: static ALuint      ThunkArraySize;
rlm@0: 
rlm@0: static CRITICAL_SECTION ThunkLock;
rlm@0: 
rlm@0: void ThunkInit(void)
rlm@0: {
rlm@0:     InitializeCriticalSection(&ThunkLock);
rlm@0:     ThunkArraySize = 1;
rlm@0:     ThunkArray = calloc(1, ThunkArraySize * sizeof(*ThunkArray));
rlm@0: }
rlm@0: 
rlm@0: void ThunkExit(void)
rlm@0: {
rlm@0:     free(ThunkArray);
rlm@0:     ThunkArray = NULL;
rlm@0:     ThunkArraySize = 0;
rlm@0:     DeleteCriticalSection(&ThunkLock);
rlm@0: }
rlm@0: 
rlm@0: ALenum NewThunkEntry(ALuint *index)
rlm@0: {
rlm@0:     ALuint i;
rlm@0: 
rlm@0:     EnterCriticalSection(&ThunkLock);
rlm@0: 
rlm@0:     for(i = 0;i < ThunkArraySize;i++)
rlm@0:     {
rlm@0:         if(ThunkArray[i] == AL_FALSE)
rlm@0:             break;
rlm@0:     }
rlm@0: 
rlm@0:     if(i == ThunkArraySize)
rlm@0:     {
rlm@0:         ALboolean *NewList;
rlm@0: 
rlm@0:         NewList = realloc(ThunkArray, ThunkArraySize*2 * sizeof(*ThunkArray));
rlm@0:         if(!NewList)
rlm@0:         {
rlm@0:             LeaveCriticalSection(&ThunkLock);
rlm@0:             ERR("Realloc failed to increase to %u enties!\n", ThunkArraySize*2);
rlm@0:             return AL_OUT_OF_MEMORY;
rlm@0:         }
rlm@0:         memset(&NewList[ThunkArraySize], 0, ThunkArraySize*sizeof(*ThunkArray));
rlm@0:         ThunkArraySize *= 2;
rlm@0:         ThunkArray = NewList;
rlm@0:     }
rlm@0: 
rlm@0:     ThunkArray[i] = AL_TRUE;
rlm@0:     *index = i+1;
rlm@0: 
rlm@0:     LeaveCriticalSection(&ThunkLock);
rlm@0: 
rlm@0:     return AL_NO_ERROR;
rlm@0: }
rlm@0: 
rlm@0: void FreeThunkEntry(ALuint index)
rlm@0: {
rlm@0:     EnterCriticalSection(&ThunkLock);
rlm@0: 
rlm@0:     if(index > 0 && index <= ThunkArraySize)
rlm@0:         ThunkArray[index-1] = AL_FALSE;
rlm@0: 
rlm@0:     LeaveCriticalSection(&ThunkLock);
rlm@0: }