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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8835 d0543943-73ff-0310-b7d9-9358b9ac24b2
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/*
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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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@todo Consider allocating strdump using dynamic allocation.
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@todo Consider reentrancy and possibly corrupted strdump buffer.
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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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static PaUtilLogCallback userCB=0;
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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<73>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) && (_MSC_VER <= 1400)
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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 SIZEDUMP 1024
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static char strdump[SIZEDUMP];
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void PaUtil_DebugPrint( const char *format, ... )
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{
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if (userCB)
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{
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va_list ap;
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va_start( ap, format );
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VSNPRINTF( strdump, SIZEDUMP, format, ap );
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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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{
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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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}
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