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