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.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 * Or go to http://www.gnu.org/copyleft/lgpl.html
19 */
20
21 #include "config.h"
22
23 #include <cctype>
24 #include <cstdlib>
25 #include <cstring>
26
27 #include "AL/al.h"
28 #include "AL/alc.h"
29
30 #include "alcontext.h"
31 #include "alstring.h"
32 #include "core/except.h"
33 #include "opthelpers.h"
34
35
alIsExtensionPresent(const ALchar * extName)36 AL_API ALboolean AL_APIENTRY alIsExtensionPresent(const ALchar *extName)
37 START_API_FUNC
38 {
39 ContextRef context{GetContextRef()};
40 if UNLIKELY(!context) return AL_FALSE;
41
42 if(!extName)
43 SETERR_RETURN(context, AL_INVALID_VALUE, AL_FALSE, "NULL pointer");
44
45 size_t len{strlen(extName)};
46 const char *ptr{context->mExtensionList};
47 while(ptr && *ptr)
48 {
49 if(al::strncasecmp(ptr, extName, len) == 0 && (ptr[len] == '\0' || isspace(ptr[len])))
50 return AL_TRUE;
51
52 if((ptr=strchr(ptr, ' ')) != nullptr)
53 {
54 do {
55 ++ptr;
56 } while(isspace(*ptr));
57 }
58 }
59
60 return AL_FALSE;
61 }
62 END_API_FUNC
63
64
alGetProcAddress(const ALchar * funcName)65 AL_API ALvoid* AL_APIENTRY alGetProcAddress(const ALchar *funcName)
66 START_API_FUNC
67 {
68 if(!funcName) return nullptr;
69 return alcGetProcAddress(nullptr, funcName);
70 }
71 END_API_FUNC
72
alGetEnumValue(const ALchar * enumName)73 AL_API ALenum AL_APIENTRY alGetEnumValue(const ALchar *enumName)
74 START_API_FUNC
75 {
76 if(!enumName) return static_cast<ALenum>(0);
77 return alcGetEnumValue(nullptr, enumName);
78 }
79 END_API_FUNC
80