jas_log.h

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/*
 * Copyright (c) 2001-2002 Michael David Adams.
 * All rights reserved.
 */
 
/* __START_OF_JASPER_LICENSE__
 * 
 * JasPer License Version 2.0
 * 
 * Copyright (c) 2001-2006 Michael David Adams
 * Copyright (c) 1999-2000 Image Power, Inc.
 * Copyright (c) 1999-2000 The University of British Columbia
 * 
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person (the
 * "User") 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, 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:
 * 
 * 1.  The above copyright notices and this permission notice (which
 * includes the disclaimer below) shall be included in all copies or
 * substantial portions of the Software.
 * 
 * 2.  The name of a copyright holder shall not be used to endorse or
 * promote products derived from the Software without specific prior
 * written permission.
 * 
 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
 * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
 * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
 * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
 * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
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 * __END_OF_JASPER_LICENSE__
 */
 
#ifndef JAS_LOG_H
#define JAS_LOG_H
 
/******************************************************************************\
* Includes.
\******************************************************************************/
 
/* The configuration header file should be included first. */
#include <jasper/jas_config.h>
 
#include <stdio.h>
#include <stdarg.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/******************************************************************************\
* Macros and functions.
\******************************************************************************/
 
#define JAS_LOGTYPE_CLASS_NULL 0
#define JAS_LOGTYPE_CLASS_ERROR 1
#define JAS_LOGTYPE_CLASS_WARN 2
#define JAS_LOGTYPE_CLASS_INFO 3
#define JAS_LOGTYPE_CLASS_DEBUG 4
#define JAS_LOGTYPE_NUM_CLASSES 5
 
#define JAS_LOGTYPE_MAX_PRIORITY 16384
 
// NOTE: without the @struct, jas_logtype_t autolinks are not generated
typedef unsigned int jas_logtype_t;
 
typedef int (jas_vlogmsgf_t)(jas_logtype_t, const char *, va_list);
 
static inline jas_logtype_t jas_logtype_init(int clas, int priority)
{
        assert(clas >= 0 && clas < JAS_LOGTYPE_NUM_CLASSES);
        assert(priority >= 0 && priority <= JAS_LOGTYPE_MAX_PRIORITY);
        return (clas & 0xf) | (priority << 4);
}
 
static inline int jas_logtype_getclass(jas_logtype_t type)
{
        return type & 0xf;
}
 
static inline int jas_logtype_getpriority(jas_logtype_t type)
{
        return type >> 4;
}
 
JAS_EXPORT
int jas_vlogmsgf(jas_logtype_t type, const char *fmt, va_list ap);
 
JAS_EXPORT
int jas_vlogmsgf_stderr(jas_logtype_t type, const char *fmt, va_list ap);
 
JAS_EXPORT
int jas_vlogmsgf_discard(jas_logtype_t type, const char *fmt, va_list ap);
 
#ifdef __cplusplus
}
#endif
 
#endif