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comparison ext/openal-soft/OpenAL32/alThunk.c @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
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-1:000000000000 0:4a0efb7baf70
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 "config.h"
22
23 #include <stdlib.h>
24
25 #include "alMain.h"
26 #include "alThunk.h"
27
28 typedef struct {
29 ALvoid *ptr;
30 ALboolean InUse;
31 } ThunkEntry;
32
33 static ThunkEntry *g_ThunkArray;
34 static ALuint g_ThunkArraySize;
35
36 static CRITICAL_SECTION g_ThunkLock;
37
38 void alThunkInit(void)
39 {
40 InitializeCriticalSection(&g_ThunkLock);
41 g_ThunkArraySize = 1;
42 g_ThunkArray = calloc(1, g_ThunkArraySize * sizeof(ThunkEntry));
43 }
44
45 void alThunkExit(void)
46 {
47 free(g_ThunkArray);
48 g_ThunkArray = NULL;
49 g_ThunkArraySize = 0;
50 DeleteCriticalSection(&g_ThunkLock);
51 }
52
53 ALuint alThunkAddEntry(ALvoid *ptr)
54 {
55 ALuint index;
56
57 EnterCriticalSection(&g_ThunkLock);
58
59 for(index = 0;index < g_ThunkArraySize;index++)
60 {
61 if(g_ThunkArray[index].InUse == AL_FALSE)
62 break;
63 }
64
65 if(index == g_ThunkArraySize)
66 {
67 ThunkEntry *NewList;
68
69 NewList = realloc(g_ThunkArray, g_ThunkArraySize*2 * sizeof(ThunkEntry));
70 if(!NewList)
71 {
72 LeaveCriticalSection(&g_ThunkLock);
73 return 0;
74 }
75 memset(&NewList[g_ThunkArraySize], 0, g_ThunkArraySize*sizeof(ThunkEntry));
76 g_ThunkArraySize *= 2;
77 g_ThunkArray = NewList;
78 }
79
80 g_ThunkArray[index].ptr = ptr;
81 g_ThunkArray[index].InUse = AL_TRUE;
82
83 LeaveCriticalSection(&g_ThunkLock);
84
85 return index+1;
86 }
87
88 void alThunkRemoveEntry(ALuint index)
89 {
90 EnterCriticalSection(&g_ThunkLock);
91
92 if(index > 0 && index <= g_ThunkArraySize)
93 g_ThunkArray[index-1].InUse = AL_FALSE;
94
95 LeaveCriticalSection(&g_ThunkLock);
96 }
97
98 ALvoid *alThunkLookupEntry(ALuint index)
99 {
100 ALvoid *ptr = NULL;
101
102 EnterCriticalSection(&g_ThunkLock);
103
104 if(index > 0 && index <= g_ThunkArraySize)
105 ptr = g_ThunkArray[index-1].ptr;
106
107 LeaveCriticalSection(&g_ThunkLock);
108
109 return ptr;
110 }