/** * 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., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * Or go to http://www.gnu.org/copyleft/lgpl.html */ #include "config.h" #include <cstdlib> #include <cstring> #include <cctype> #include "AL/al.h" #include "AL/alc.h" #include "alMain.h" #include "alcontext.h" #include "alError.h" AL_API ALboolean AL_APIENTRY alIsExtensionPresent(const ALchar *extName) { ContextRef context{GetContextRef()}; if(UNLIKELY(!context)) return AL_FALSE; if(!extName) SETERR_RETURN(context.get(), AL_INVALID_VALUE, AL_FALSE, "NULL pointer"); size_t len{strlen(extName)}; const char *ptr{context->ExtensionList}; while(ptr && *ptr) { if(strncasecmp(ptr, extName, len) == 0 && (ptr[len] == '\0' || isspace(ptr[len]))) return AL_TRUE; if((ptr=strchr(ptr, ' ')) != nullptr) { do { ++ptr; } while(isspace(*ptr)); } } return AL_FALSE; } AL_API ALvoid* AL_APIENTRY alGetProcAddress(const ALchar *funcName) { if(!funcName) return nullptr; return alcGetProcAddress(nullptr, funcName); } AL_API ALenum AL_APIENTRY alGetEnumValue(const ALchar *enumName) { if(!enumName) return static_cast<ALenum>(0); return alcGetEnumValue(nullptr, enumName); }