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/*
* Copyright (c) 2005, Hervé Drolon, FreeImage Team
* Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __EVENT_H
#define __EVENT_H
#include "openjpeg.h"
/**
@file event.h
@brief Implementation of a event callback system
The functions in EVENT.C have for goal to send output messages (errors, warnings, debug) to the user.
*/
/**
Message handler object
used for
<ul>
<li>Error messages
<li>Warning messages
<li>Debugging messages
</ul>
*/
typedef struct opj_event_mgr
{
/** Data to call the event manager upon */
void * m_error_data;
/** Data to call the event manager upon */
void * m_warning_data;
/** Data to call the event manager upon */
void * m_info_data;
/** Error message callback if available, NULL otherwise */
opj_msg_callback error_handler;
/** Warning message callback if available, NULL otherwise */
opj_msg_callback warning_handler;
/** Debug message callback if available, NULL otherwise */
opj_msg_callback info_handler;
} opj_event_mgr_t;
#define EVT_ERROR 1 /**< Error event type */
#define EVT_WARNING 2 /**< Warning event type */
#define EVT_INFO 4 /**< Debug event type */
/** @defgroup EVENT EVENT - Implementation of a event callback system */
/*@{*/
/** @name Exported functions (see also openjpeg.h) */
/*@{*/
/* ----------------------------------------------------------------------- */
/**
* Writes formatted data to a string and send the string to a user callback.
* @param p_event_mgr the event manager to display messages.
* @param event_type Event type of the message
* @param fmt Format-control string (plus optionnal arguments)
* @return Returns true if successful, returns false otherwise
*/
bool opj_event_msg(struct opj_event_mgr * p_event_mgr, OPJ_INT32 event_type, const OPJ_CHAR *fmt, ...);
/* ----------------------------------------------------------------------- */
/*@}*/
/*@}*/
#endif /* __EVENT_H */
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