al/extension.cpp

   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 <string_view>
  24
  25 #include "AL/al.h"
  26 #include "AL/alc.h"
  27
  28 #include "alc/context.h"
  29 #include "alstring.h"
  30 #include "direct_defs.h"
  31 #include "opthelpers.h"
  32
  33
  34 AL_API DECL_FUNC1(ALboolean, alIsExtensionPresent, const ALchar*,extName)
  35 FORCE_ALIGN ALboolean AL_APIENTRY alIsExtensionPresentDirect(ALCcontext *context, const ALchar *extName) noexcept
  36 {
  37     if(!extName) UNLIKELY
  38     {
  39         context->setError(AL_INVALID_VALUE, "NULL pointer");
  40         return AL_FALSE;
  41     }
  42
  43     const std::string_view tofind{extName};
  44     for(std::string_view ext : context->mExtensions)
  45     {
  46         if(al::case_compare(ext, tofind) == 0)
  47             return AL_TRUE;
  48     }
  49
  50     return AL_FALSE;
  51 }
  52
  53
  54 AL_API ALvoid* AL_APIENTRY alGetProcAddress(const ALchar *funcName) noexcept
  55 {
  56     if(!funcName) return nullptr;
  57     return alcGetProcAddress(nullptr, funcName);
  58 }
  59
  60 FORCE_ALIGN ALvoid* AL_APIENTRY alGetProcAddressDirect(ALCcontext*, const ALchar *funcName) noexcept
  61 {
  62     if(!funcName) return nullptr;
  63     return alcGetProcAddress(nullptr, funcName);
  64 }
  65
  66 AL_API ALenum AL_APIENTRY alGetEnumValue(const ALchar *enumName) noexcept
  67 {
  68     if(!enumName) return ALenum{0};
  69     return alcGetEnumValue(nullptr, enumName);
  70 }
  71
  72 FORCE_ALIGN ALenum AL_APIENTRY alGetEnumValueDirect(ALCcontext*, const ALchar *enumName) noexcept
  73 {
  74     if(!enumName) return ALenum{0};
  75     return alcGetEnumValue(nullptr, enumName);
  76 }