/src/FreeImage/Source/LibOpenJPEG/event.c

  1/*
  2 * Copyright (c) 2005, Herve Drolon, FreeImage Team
  3 * All rights reserved.
  4 *
  5 * Redistribution and use in source and binary forms, with or without
  6 * modification, are permitted provided that the following conditions
  7 * are met:
  8 * 1. Redistributions of source code must retain the above copyright
  9 *    notice, this list of conditions and the following disclaimer.
 10 * 2. Redistributions in binary form must reproduce the above copyright
 11 *    notice, this list of conditions and the following disclaimer in the
 12 *    documentation and/or other materials provided with the distribution.
 13 *
 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 24 * POSSIBILITY OF SUCH DAMAGE.
 25 */
 26
 27#include "opj_includes.h"
 28
 29/* ==========================================================
 30     Utility functions
 31   ==========================================================*/
 32
 33#ifdef OPJ_CODE_NOT_USED
 34#ifndef _WIN32
 35static char*
 36i2a(unsigned i, char *a, unsigned r) {
 37	if (i/r > 0) a = i2a(i/r,a,r);
 38	*a = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"[i%r];
 39	return a+1;
 40}
 41
 42/** 
 43 Transforms integer i into an ascii string and stores the result in a; 
 44 string is encoded in the base indicated by r.
 45 @param i Number to be converted
 46 @param a String result
 47 @param r Base of value; must be in the range 2 - 36
 48 @return Returns a
 49*/
 50static char *
 51_itoa(int i, char *a, int r) {
 52	r = ((r < 2) || (r > 36)) ? 10 : r;
 53	if(i < 0) {
 54		*a = '-';
 55		*i2a(-i, a+1, r) = 0;
 56	}
 57	else *i2a(i, a, r) = 0;
 58	return a;
 59}
 60
 61#endif /* !_WIN32 */
 62#endif
 63/* ----------------------------------------------------------------------- */
 64
 65opj_event_mgr_t* OPJ_CALLCONV opj_set_event_mgr(opj_common_ptr cinfo, opj_event_mgr_t *event_mgr, void *context) {
 66	if(cinfo) {
 67		opj_event_mgr_t *previous = cinfo->event_mgr;
 68		cinfo->event_mgr = event_mgr;
 69		cinfo->client_data = context;
 70		return previous;
 71	}
 72
 73	return NULL;
 74}
 75
 76opj_bool opj_event_msg(opj_common_ptr cinfo, int event_type, const char *fmt, ...) {
 77#define MSG_SIZE 512 /* 512 bytes should be more than enough for a short message */
 78	opj_msg_callback msg_handler = NULL;
 79
 80	opj_event_mgr_t *event_mgr = cinfo->event_mgr;
 81	if(event_mgr != NULL) {
 82		switch(event_type) {
 83			case EVT_ERROR:
 84				msg_handler = event_mgr->error_handler;
 85				break;
 86			case EVT_WARNING:
 87				msg_handler = event_mgr->warning_handler;
 88				break;
 89			case EVT_INFO:
 90				msg_handler = event_mgr->info_handler;
 91				break;
 92			default:
 93				break;
 94		}
 95		if(msg_handler == NULL) {
 96			return OPJ_FALSE;
 97		}
 98	} else {
 99		return OPJ_FALSE;
100	}
101
102	if ((fmt != NULL) && (event_mgr != NULL)) {
103		va_list arg;
104		int str_length/*, i, j*/; /* UniPG */
105		char message[MSG_SIZE];
106		memset(message, 0, MSG_SIZE);
107		/* initialize the optional parameter list */
108		va_start(arg, fmt);
109		/* check the length of the format string */
110		str_length = (strlen(fmt) > MSG_SIZE) ? MSG_SIZE : strlen(fmt);
111		/* parse the format string and put the result in 'message' */
112		vsprintf(message, fmt, arg); /* UniPG */
113		/* deinitialize the optional parameter list */
114		va_end(arg);
115
116		/* output the message to the user program */
117		msg_handler(message, cinfo->client_data);
118	}
119
120	return OPJ_TRUE;
121}
122