pa_debugprint.h

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#ifndef PA_LOG_H
#define PA_LOG_H
/*
 * Log file redirector function
 * Copyright (c) 1999-2006 Ross Bencina, Phil Burk
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files
 * (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/*
 * The text above constitutes the entire PortAudio license; however,
 * the PortAudio community also makes the following non-binding requests:
 *
 * Any person wishing to distribute modifications to the Software is
 * requested to send the modifications to the original developer so that
 * they can be incorporated into the canonical version. It is also
 * requested that these non-binding requests be included along with the
 * license above.
 */

#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */



void PaUtil_DebugPrint( const char *format, ... );


/*
    The basic format for log messages is described below. If you need to
    add any log messages, please follow this format.

    Function entry (void function):

        "FunctionName called.\n"

    Function entry (non void function):

        "FunctionName called:\n"
        "\tParam1Type param1: param1Value\n"
        "\tParam2Type param2: param2Value\n"      (etc...)


    Function exit (no return value):

        "FunctionName returned.\n"

    Function exit (simple return value):

        "FunctionName returned:\n"
        "\tReturnType: returnValue\n"

    If the return type is an error code, the error text is displayed in ()

    If the return type is not an error code, but has taken a special value
    because an error occurred, then the reason for the error is shown in []

    If the return type is a struct ptr, the struct is dumped.

    See the code below for examples
*/

#ifdef PA_ENABLE_DEBUG_OUTPUT
#define PA_DEBUG(x) PaUtil_DebugPrint x ;
#else
#define PA_DEBUG(x)
#endif


#ifdef PA_LOG_API_CALLS
#define PA_LOGAPI(x) PaUtil_DebugPrint x

#define PA_LOGAPI_ENTER(functionName) PaUtil_DebugPrint( functionName " called.\n" )

#define PA_LOGAPI_ENTER_PARAMS(functionName) PaUtil_DebugPrint( functionName " called:\n" )

#define PA_LOGAPI_EXIT(functionName) PaUtil_DebugPrint( functionName " returned.\n" )

#define PA_LOGAPI_EXIT_PAERROR( functionName, result ) \
    PaUtil_DebugPrint( functionName " returned:\n" ); \
    PaUtil_DebugPrint("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )

#define PA_LOGAPI_EXIT_T( functionName, resultFormatString, result ) \
    PaUtil_DebugPrint( functionName " returned:\n" ); \
    PaUtil_DebugPrint("\t" resultFormatString "\n", result )

#define PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( functionName, positiveResultFormatString, result ) \
    PaUtil_DebugPrint( functionName " returned:\n" ); \
    if( result > 0 ) \
        PaUtil_DebugPrint("\t" positiveResultFormatString "\n", result ); \
    else \
        PaUtil_DebugPrint("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )
#else
#define PA_LOGAPI(x)
#define PA_LOGAPI_ENTER(functionName)
#define PA_LOGAPI_ENTER_PARAMS(functionName)
#define PA_LOGAPI_EXIT(functionName)
#define PA_LOGAPI_EXIT_PAERROR( functionName, result )
#define PA_LOGAPI_EXIT_T( functionName, resultFormatString, result )
#define PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( functionName, positiveResultFormatString, result )
#endif


typedef void (*PaUtilLogCallback ) (const char *log);

void PaUtil_SetDebugPrintFunction(PaUtilLogCallback  cb);



#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_LOG_H */