90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/**
|
|
* 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 "config.h"
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "alMain.h"
|
|
#include "alThunk.h"
|
|
|
|
|
|
static ALenum *ThunkArray;
|
|
static ALuint ThunkArraySize;
|
|
static RWLock ThunkLock;
|
|
|
|
void ThunkInit(void)
|
|
{
|
|
RWLockInit(&ThunkLock);
|
|
ThunkArraySize = 1;
|
|
ThunkArray = calloc(1, ThunkArraySize * sizeof(*ThunkArray));
|
|
}
|
|
|
|
void ThunkExit(void)
|
|
{
|
|
free(ThunkArray);
|
|
ThunkArray = NULL;
|
|
ThunkArraySize = 0;
|
|
}
|
|
|
|
ALenum NewThunkEntry(ALuint *index)
|
|
{
|
|
ALenum *NewList;
|
|
ALuint i;
|
|
|
|
ReadLock(&ThunkLock);
|
|
for(i = 0;i < ThunkArraySize;i++)
|
|
{
|
|
if(ExchangeInt(&ThunkArray[i], AL_TRUE) == AL_FALSE)
|
|
{
|
|
ReadUnlock(&ThunkLock);
|
|
*index = i+1;
|
|
return AL_NO_ERROR;
|
|
}
|
|
}
|
|
ReadUnlock(&ThunkLock);
|
|
|
|
WriteLock(&ThunkLock);
|
|
NewList = realloc(ThunkArray, ThunkArraySize*2 * sizeof(*ThunkArray));
|
|
if(!NewList)
|
|
{
|
|
WriteUnlock(&ThunkLock);
|
|
ERR("Realloc failed to increase to %u enties!\n", ThunkArraySize*2);
|
|
return AL_OUT_OF_MEMORY;
|
|
}
|
|
memset(&NewList[ThunkArraySize], 0, ThunkArraySize*sizeof(*ThunkArray));
|
|
ThunkArraySize *= 2;
|
|
ThunkArray = NewList;
|
|
|
|
ThunkArray[i] = AL_TRUE;
|
|
WriteUnlock(&ThunkLock);
|
|
|
|
*index = i+1;
|
|
return AL_NO_ERROR;
|
|
}
|
|
|
|
void FreeThunkEntry(ALuint index)
|
|
{
|
|
ReadLock(&ThunkLock);
|
|
if(index > 0 && index <= ThunkArraySize)
|
|
ExchangeInt(&ThunkArray[index-1], AL_FALSE);
|
|
ReadUnlock(&ThunkLock);
|
|
}
|