170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine/* 270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * jerror.c 370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Copyright (C) 1991-1998, Thomas G. Lane. 570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * This file is part of the Independent JPEG Group's software. 670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * For conditions of distribution and use, see the accompanying README file. 770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * This file contains simple error-reporting and trace-message routines. 970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * These are suitable for Unix-like systems and others where writing to 1070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * stderr is the right thing to do. Many applications will want to replace 1170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * some or all of these routines. 1270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 1370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * If you define USE_WINDOWS_MESSAGEBOX in jconfig.h or in the makefile, 1470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * you get a Windows-specific hack to display error messages in a dialog box. 1570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * It ain't much, but it beats dropping error messages into the bit bucket, 1670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * which is what happens to output to stderr under most Windows C compilers. 1770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 1870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * These routines are used by both the compression and decompression code. 1970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine */ 2070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 2170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine/* this is not a core library module, so it doesn't define JPEG_INTERNALS */ 2270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#include "jinclude.h" 2370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#include "jpeglib.h" 2470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#include "jversion.h" 2570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#include "jerror.h" 2670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 2770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#ifdef USE_WINDOWS_MESSAGEBOX 2870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#include <windows.h> 2970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#endif 3070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 3170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#ifndef EXIT_FAILURE /* define exit() codes if not provided */ 3270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#define EXIT_FAILURE 1 3370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#endif 3470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 3570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 3670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine/* 3770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Create the message string table. 3870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * We do this from the master message list in jerror.h by re-reading 3970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * jerror.h with a suitable definition for macro JMESSAGE. 4070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * The message table is made an external symbol just in case any applications 4170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * want to refer to it directly. 4270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine */ 4370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 4470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#ifdef NEED_SHORT_EXTERNAL_NAMES 4570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#define jpeg_std_message_table jMsgTable 4670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#endif 4770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 4870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#define JMESSAGE(code,string) string , 4970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 5070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkineconst char * const jpeg_std_message_table[] = { 5170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#include "jerror.h" 5270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine NULL 5370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine}; 5470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 5570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 5670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine/* 5770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Error exit handler: must not return to caller. 5870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 5970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Applications may override this if they want to get control back after 6070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * an error. Typically one would longjmp somewhere instead of exiting. 6170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * The setjmp buffer can be made a private field within an expanded error 6270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * handler object. Note that the info needed to generate an error message 6370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * is stored in the error object, so you can generate the message now or 6470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * later, at your convenience. 6570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * You should make sure that the JPEG object is cleaned up (with jpeg_abort 6670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * or jpeg_destroy) at some point. 6770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine */ 6870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 6970a18cd874a22452aca9e39e22275ed4538ed20bVladimir ChtchetkineMETHODDEF(void) 7070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkineerror_exit (j_common_ptr cinfo) 7170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine{ 7270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Always display the message */ 7370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine (*cinfo->err->output_message) (cinfo); 7470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 7570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Let the memory manager delete any temp files before we die */ 7670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine jpeg_destroy(cinfo); 7770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 7870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine exit(EXIT_FAILURE); 7970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine} 8070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 8170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 8270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine/* 8370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Actual output of an error or trace message. 8470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Applications may override this method to send JPEG messages somewhere 8570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * other than stderr. 8670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 8770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * On Windows, printing to stderr is generally completely useless, 8870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * so we provide optional code to produce an error-dialog popup. 8970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Most Windows applications will still prefer to override this routine, 9070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * but if they don't, it'll do something at least marginally useful. 9170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 9270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * NOTE: to use the library in an environment that doesn't support the 9370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * C stdio library, you may have to delete the call to fprintf() entirely, 9470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * not just not use this routine. 9570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine */ 9670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 9770a18cd874a22452aca9e39e22275ed4538ed20bVladimir ChtchetkineMETHODDEF(void) 9870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkineoutput_message (j_common_ptr cinfo) 9970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine{ 10070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine char buffer[JMSG_LENGTH_MAX]; 10170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 10270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Create the message */ 10370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine (*cinfo->err->format_message) (cinfo, buffer); 10470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 10570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#ifdef USE_WINDOWS_MESSAGEBOX 10670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Display it in a message dialog box */ 10770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine MessageBox(GetActiveWindow(), buffer, "JPEG Library Error", 10870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine MB_OK | MB_ICONERROR); 10970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#else 11070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Send it to stderr, adding a newline */ 11170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine fprintf(stderr, "%s\n", buffer); 11270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine#endif 11370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine} 11470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 11570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 11670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine/* 11770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Decide whether to emit a trace or warning message. 11870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * msg_level is one of: 11970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * -1: recoverable corrupt-data warning, may want to abort. 12070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 0: important advisory messages (always display to user). 12170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 1: first level of tracing detail. 12270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 2,3,...: successively more detailed tracing messages. 12370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * An application might override this method if it wanted to abort on warnings 12470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * or change the policy about which messages to display. 12570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine */ 12670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 12770a18cd874a22452aca9e39e22275ed4538ed20bVladimir ChtchetkineMETHODDEF(void) 12870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkineemit_message (j_common_ptr cinfo, int msg_level) 12970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine{ 13070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine struct jpeg_error_mgr * err = cinfo->err; 13170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 13270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine if (msg_level < 0) { 13370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* It's a warning message. Since corrupt files may generate many warnings, 13470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * the policy implemented here is to show only the first warning, 13570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * unless trace_level >= 3. 13670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine */ 13770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine if (err->num_warnings == 0 || err->trace_level >= 3) 13870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine (*err->output_message) (cinfo); 13970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Always count warnings in num_warnings. */ 14070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->num_warnings++; 14170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine } else { 14270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* It's a trace message. Show it if trace_level >= msg_level. */ 14370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine if (err->trace_level >= msg_level) 14470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine (*err->output_message) (cinfo); 14570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine } 14670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine} 14770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 14870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 14970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine/* 15070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Format a message string for the most recent JPEG error or message. 15170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * The message is stored into buffer, which should be at least JMSG_LENGTH_MAX 15270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * characters. Note that no '\n' character is added to the string. 15370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Few applications should need to override this method. 15470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine */ 15570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 15670a18cd874a22452aca9e39e22275ed4538ed20bVladimir ChtchetkineMETHODDEF(void) 15770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkineformat_message (j_common_ptr cinfo, char * buffer) 15870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine{ 15970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine struct jpeg_error_mgr * err = cinfo->err; 16070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine int msg_code = err->msg_code; 16170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine const char * msgtext = NULL; 16270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine const char * msgptr; 16370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine char ch; 16470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine boolean isstring; 16570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 16670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Look up message string in proper table */ 16770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine if (msg_code > 0 && msg_code <= err->last_jpeg_message) { 16870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine msgtext = err->jpeg_message_table[msg_code]; 16970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine } else if (err->addon_message_table != NULL && 17070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine msg_code >= err->first_addon_message && 17170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine msg_code <= err->last_addon_message) { 17270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine msgtext = err->addon_message_table[msg_code - err->first_addon_message]; 17370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine } 17470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 17570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Defend against bogus message number */ 17670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine if (msgtext == NULL) { 17770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->msg_parm.i[0] = msg_code; 17870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine msgtext = err->jpeg_message_table[0]; 17970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine } 18070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 18170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Check for string parameter, as indicated by %s in the message text */ 18270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine isstring = FALSE; 18370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine msgptr = msgtext; 18470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine while ((ch = *msgptr++) != '\0') { 18570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine if (ch == '%') { 18670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine if (*msgptr == 's') isstring = TRUE; 18770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine break; 18870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine } 18970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine } 19070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 19170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Format the message into the passed buffer */ 19270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine if (isstring) 19370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine sprintf(buffer, msgtext, err->msg_parm.s); 19470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine else 19570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine sprintf(buffer, msgtext, 19670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->msg_parm.i[0], err->msg_parm.i[1], 19770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->msg_parm.i[2], err->msg_parm.i[3], 19870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->msg_parm.i[4], err->msg_parm.i[5], 19970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->msg_parm.i[6], err->msg_parm.i[7]); 20070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine} 20170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 20270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 20370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine/* 20470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Reset error state variables at start of a new image. 20570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * This is called during compression startup to reset trace/error 20670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * processing to default state, without losing any application-specific 20770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * method pointers. An application might possibly want to override 20870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * this method if it has additional error processing state. 20970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine */ 21070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 21170a18cd874a22452aca9e39e22275ed4538ed20bVladimir ChtchetkineMETHODDEF(void) 21270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkinereset_error_mgr (j_common_ptr cinfo) 21370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine{ 21470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine cinfo->err->num_warnings = 0; 21570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* trace_level is not reset since it is an application-supplied parameter */ 21670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine cinfo->err->msg_code = 0; /* may be useful as a flag for "no error" */ 21770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine} 21870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 21970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 22070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine/* 22170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Fill in the standard error-handling methods in a jpeg_error_mgr object. 22270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * Typical call is: 22370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * struct jpeg_compress_struct cinfo; 22470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * struct jpeg_error_mgr err; 22570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * 22670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * cinfo.err = jpeg_std_error(&err); 22770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine * after which the application may override some of the methods. 22870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine */ 22970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 23070a18cd874a22452aca9e39e22275ed4538ed20bVladimir ChtchetkineGLOBAL(struct jpeg_error_mgr *) 23170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkinejpeg_std_error (struct jpeg_error_mgr * err) 23270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine{ 23370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->error_exit = error_exit; 23470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->emit_message = emit_message; 23570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->output_message = output_message; 23670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->format_message = format_message; 23770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->reset_error_mgr = reset_error_mgr; 23870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 23970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->trace_level = 0; /* default = no tracing */ 24070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->num_warnings = 0; /* no warnings emitted yet */ 24170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->msg_code = 0; /* may be useful as a flag for "no error" */ 24270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 24370a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine /* Initialize message table pointers */ 24470a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->jpeg_message_table = jpeg_std_message_table; 24570a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->last_jpeg_message = (int) JMSG_LASTMSGCODE - 1; 24670a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 24770a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->addon_message_table = NULL; 24870a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->first_addon_message = 0; /* for safety */ 24970a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine err->last_addon_message = 0; 25070a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine 25170a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine return err; 25270a18cd874a22452aca9e39e22275ed4538ed20bVladimir Chtchetkine} 253