mirror of
https://github.com/cookiengineer/audacity
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109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/*
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* $Id: pa_dynlink.c 1339 2008-02-15 07:50:33Z rossb $
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* Portable Audio I/O Library
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* dynamic library helper
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*
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* Based on the Open Source API proposed by Ross Bencina
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* Copyright (c) 2008 Ross Bencina
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* The text above constitutes the entire PortAudio license; however,
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* the PortAudio community also makes the following non-binding requests:
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*
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* Any person wishing to distribute modifications to the Software is
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* requested to send the modifications to the original developer so that
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* they can be incorporated into the canonical version. It is also
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* requested that these non-binding requests be included along with the
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* license above.
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*/
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/** @file
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@ingroup common_src
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@brief dynamic library helper functions.
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*/
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#if defined(WIN32)
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#include <windows.h>
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#else
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#include <dlfcn.h>
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#endif
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#include "pa_debugprint.h"
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#include "pa_dynload.h"
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#if !defined(NULL)
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#define NULL 0
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#endif
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paDynamicLib PaDL_Load( char *name )
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{
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paDynamicLib lib;
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#if defined(WIN32)
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lib = LoadLibrary(name);
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#else
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lib = dlopen(name, RTLD_LAZY);
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#endif
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if (!lib) {
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#if defined(WIN32)
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PA_DEBUG(("Couldn't load %s, error code: %d\n", name, GetLastError()));
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#else
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PA_DEBUG(("Couldn't load %s, error: %s\n", name, dlerror()));
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#endif
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}
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return lib;
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}
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void PaDL_Unload( paDynamicLib lib )
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{
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#if defined(WIN32)
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FreeLibrary(lib);
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#else
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dlclose(lib);
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#endif
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}
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void *PaDL_FindSymbol( paDynamicLib lib, char *name )
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{
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void *addr;
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#if defined(WIN32)
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addr = (void *) GetProcAddress(lib, name);
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#else
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addr = dlsym(lib, name);
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#endif
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if (addr == NULL) {
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#if defined(WIN32)
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PA_DEBUG(("Couldn't find %s function, error code: %d\n", name, GetLastError()));
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#else
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PA_DEBUG(("Couldn't find %s function, error: %s\n", name, dlerror()));
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#endif
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}
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return addr;
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}
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