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/*
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 * $Id: pa_log.c $
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 * Portable Audio I/O Library Multi-Host API front end
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 * Validate function parameters and manage multiple host APIs.
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 *
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 * Based on the Open Source API proposed by Ross Bencina
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 * Copyright (c) 1999-2006 Ross Bencina, Phil Burk
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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 Implements log function.
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    PaUtil_SetLogPrintFunction can be user called to replace the provided
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        DefaultLogPrint function, which writes to stderr.
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        One can NOT pass var_args across compiler/dll boundaries as it is not
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        "byte code/abi portable". So the technique used here is to allocate a local
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        a static array, write in it, then callback the user with a pointer to its
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        start.
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*/
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#include <stdio.h>
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#include <stdarg.h>
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#include "pa_debugprint.h"
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// for OutputDebugStringA
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#if defined(_MSC_VER) && defined(PA_ENABLE_MSVC_DEBUG_OUTPUT)
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        #define WIN32_LEAN_AND_MEAN // exclude rare headers
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        #include "windows.h"
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#endif
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// User callback
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static PaUtilLogCallback userCB = NULL;
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// Sets user callback
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void PaUtil_SetDebugPrintFunction(PaUtilLogCallback cb)
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{
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    userCB = cb;
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}
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/*
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 If your platform doesn?t have vsnprintf, you are stuck with a
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 VERY dangerous alternative, vsprintf (with no n)
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*/
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#if _MSC_VER
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        /* Some Windows Mobile SDKs don't define vsnprintf but all define _vsnprintf (hopefully).
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           According to MSDN "vsnprintf is identical to _vsnprintf". So we use _vsnprintf with MSC.
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        */
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        #define VSNPRINTF  _vsnprintf 
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#else
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        #define VSNPRINTF  vsnprintf
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#endif
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#define PA_LOG_BUF_SIZE 2048
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void PaUtil_DebugPrint( const char *format, ... )
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{
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        // Optional logging into Output console of Visual Studio
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#if defined(_MSC_VER) && defined(PA_ENABLE_MSVC_DEBUG_OUTPUT)
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        {
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                char buf[PA_LOG_BUF_SIZE];
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                va_list ap;
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                va_start(ap, format);
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                VSNPRINTF(buf, sizeof(buf), format, ap);
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                buf[sizeof(buf)-1] = 0;
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                OutputDebugStringA(buf);
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                va_end(ap);
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        }
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#endif
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        // Output to User-Callback
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    if (userCB != NULL)
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    {
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        char strdump[PA_LOG_BUF_SIZE];
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        va_list ap;
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        va_start(ap, format);
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        VSNPRINTF(strdump, sizeof(strdump), format, ap);
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        strdump[sizeof(strdump)-1] = 0;
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        userCB(strdump);
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        va_end(ap);
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    }
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    else
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        // Standard output to stderr
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    {
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        va_list ap;
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        va_start(ap, format);
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        vfprintf(stderr, format, ap);
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        va_end(ap);
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        fflush(stderr);
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    }
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}