Shoaib Ahmed / Mbed 2 deprecated uzairkhan

Final 350 project

Dependencies:   uzair Camera_LS_Y201 F7_Ethernet LCD_DISCO_F746NG NetworkAPI SDFileSystem mbed

includes/jerror.c@0:791a779d6220, 2017-07-31 (annotated)

Committer:
shoaib_ahmed
Date:
Mon Jul 31 09:16:35 2017 +0000
Revision:
0:791a779d6220
final project;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shoaib_ahmed 0:791a779d6220 1 /*
shoaib_ahmed 0:791a779d6220 2 * jerror.c
shoaib_ahmed 0:791a779d6220 3 *
shoaib_ahmed 0:791a779d6220 4 * Copyright (C) 1991-1998, Thomas G. Lane.
shoaib_ahmed 0:791a779d6220 5 * Modified 2012-2015 by Guido Vollbeding.
shoaib_ahmed 0:791a779d6220 6 * This file is part of the Independent JPEG Group's software.
shoaib_ahmed 0:791a779d6220 7 * For conditions of distribution and use, see the accompanying README file.
shoaib_ahmed 0:791a779d6220 8 *
shoaib_ahmed 0:791a779d6220 9 * This file contains simple error-reporting and trace-message routines.
shoaib_ahmed 0:791a779d6220 10 * These are suitable for Unix-like systems and others where writing to
shoaib_ahmed 0:791a779d6220 11 * stderr is the right thing to do. Many applications will want to replace
shoaib_ahmed 0:791a779d6220 12 * some or all of these routines.
shoaib_ahmed 0:791a779d6220 13 *
shoaib_ahmed 0:791a779d6220 14 * If you define USE_WINDOWS_MESSAGEBOX in jconfig.h or in the makefile,
shoaib_ahmed 0:791a779d6220 15 * you get a Windows-specific hack to display error messages in a dialog box.
shoaib_ahmed 0:791a779d6220 16 * It ain't much, but it beats dropping error messages into the bit bucket,
shoaib_ahmed 0:791a779d6220 17 * which is what happens to output to stderr under most Windows C compilers.
shoaib_ahmed 0:791a779d6220 18 *
shoaib_ahmed 0:791a779d6220 19 * These routines are used by both the compression and decompression code.
shoaib_ahmed 0:791a779d6220 20 */
shoaib_ahmed 0:791a779d6220 21
shoaib_ahmed 0:791a779d6220 22 #ifdef USE_WINDOWS_MESSAGEBOX
shoaib_ahmed 0:791a779d6220 23 #include <windows.h>
shoaib_ahmed 0:791a779d6220 24 #endif
shoaib_ahmed 0:791a779d6220 25
shoaib_ahmed 0:791a779d6220 26 /* this is not a core library module, so it doesn't define JPEG_INTERNALS */
shoaib_ahmed 0:791a779d6220 27 #include "jinclude.h"
shoaib_ahmed 0:791a779d6220 28 #include "jpeglib.h"
shoaib_ahmed 0:791a779d6220 29 #include "jversion.h"
shoaib_ahmed 0:791a779d6220 30 #include "jerror.h"
shoaib_ahmed 0:791a779d6220 31
shoaib_ahmed 0:791a779d6220 32 #ifndef EXIT_FAILURE /* define exit() codes if not provided */
shoaib_ahmed 0:791a779d6220 33 #define EXIT_FAILURE 1
shoaib_ahmed 0:791a779d6220 34 #endif
shoaib_ahmed 0:791a779d6220 35
shoaib_ahmed 0:791a779d6220 36
shoaib_ahmed 0:791a779d6220 37 /*
shoaib_ahmed 0:791a779d6220 38 * Create the message string table.
shoaib_ahmed 0:791a779d6220 39 * We do this from the master message list in jerror.h by re-reading
shoaib_ahmed 0:791a779d6220 40 * jerror.h with a suitable definition for macro JMESSAGE.
shoaib_ahmed 0:791a779d6220 41 * The message table is made an external symbol just in case any applications
shoaib_ahmed 0:791a779d6220 42 * want to refer to it directly.
shoaib_ahmed 0:791a779d6220 43 */
shoaib_ahmed 0:791a779d6220 44
shoaib_ahmed 0:791a779d6220 45 #ifdef NEED_SHORT_EXTERNAL_NAMES
shoaib_ahmed 0:791a779d6220 46 #define jpeg_std_message_table jMsgTable
shoaib_ahmed 0:791a779d6220 47 #endif
shoaib_ahmed 0:791a779d6220 48
shoaib_ahmed 0:791a779d6220 49 #define JMESSAGE(code,string) string ,
shoaib_ahmed 0:791a779d6220 50
shoaib_ahmed 0:791a779d6220 51 const char * const jpeg_std_message_table[] = {
shoaib_ahmed 0:791a779d6220 52 #include "jerror.h"
shoaib_ahmed 0:791a779d6220 53 NULL
shoaib_ahmed 0:791a779d6220 54 };
shoaib_ahmed 0:791a779d6220 55
shoaib_ahmed 0:791a779d6220 56
shoaib_ahmed 0:791a779d6220 57 /*
shoaib_ahmed 0:791a779d6220 58 * Error exit handler: must not return to caller.
shoaib_ahmed 0:791a779d6220 59 *
shoaib_ahmed 0:791a779d6220 60 * Applications may override this if they want to get control back after
shoaib_ahmed 0:791a779d6220 61 * an error. Typically one would longjmp somewhere instead of exiting.
shoaib_ahmed 0:791a779d6220 62 * The setjmp buffer can be made a private field within an expanded error
shoaib_ahmed 0:791a779d6220 63 * handler object. Note that the info needed to generate an error message
shoaib_ahmed 0:791a779d6220 64 * is stored in the error object, so you can generate the message now or
shoaib_ahmed 0:791a779d6220 65 * later, at your convenience.
shoaib_ahmed 0:791a779d6220 66 * You should make sure that the JPEG object is cleaned up (with jpeg_abort
shoaib_ahmed 0:791a779d6220 67 * or jpeg_destroy) at some point.
shoaib_ahmed 0:791a779d6220 68 */
shoaib_ahmed 0:791a779d6220 69
shoaib_ahmed 0:791a779d6220 70 METHODDEF(noreturn_t)
shoaib_ahmed 0:791a779d6220 71 error_exit (j_common_ptr cinfo)
shoaib_ahmed 0:791a779d6220 72 {
shoaib_ahmed 0:791a779d6220 73 /* Always display the message */
shoaib_ahmed 0:791a779d6220 74 (*cinfo->err->output_message) (cinfo);
shoaib_ahmed 0:791a779d6220 75
shoaib_ahmed 0:791a779d6220 76 /* Let the memory manager delete any temp files before we die */
shoaib_ahmed 0:791a779d6220 77 jpeg_destroy(cinfo);
shoaib_ahmed 0:791a779d6220 78
shoaib_ahmed 0:791a779d6220 79 exit(EXIT_FAILURE);
shoaib_ahmed 0:791a779d6220 80 }
shoaib_ahmed 0:791a779d6220 81
shoaib_ahmed 0:791a779d6220 82
shoaib_ahmed 0:791a779d6220 83 /*
shoaib_ahmed 0:791a779d6220 84 * Actual output of an error or trace message.
shoaib_ahmed 0:791a779d6220 85 * Applications may override this method to send JPEG messages somewhere
shoaib_ahmed 0:791a779d6220 86 * other than stderr.
shoaib_ahmed 0:791a779d6220 87 *
shoaib_ahmed 0:791a779d6220 88 * On Windows, printing to stderr is generally completely useless,
shoaib_ahmed 0:791a779d6220 89 * so we provide optional code to produce an error-dialog popup.
shoaib_ahmed 0:791a779d6220 90 * Most Windows applications will still prefer to override this routine,
shoaib_ahmed 0:791a779d6220 91 * but if they don't, it'll do something at least marginally useful.
shoaib_ahmed 0:791a779d6220 92 *
shoaib_ahmed 0:791a779d6220 93 * NOTE: to use the library in an environment that doesn't support the
shoaib_ahmed 0:791a779d6220 94 * C stdio library, you may have to delete the call to fprintf() entirely,
shoaib_ahmed 0:791a779d6220 95 * not just not use this routine.
shoaib_ahmed 0:791a779d6220 96 */
shoaib_ahmed 0:791a779d6220 97
shoaib_ahmed 0:791a779d6220 98 METHODDEF(void)
shoaib_ahmed 0:791a779d6220 99 output_message (j_common_ptr cinfo)
shoaib_ahmed 0:791a779d6220 100 {
shoaib_ahmed 0:791a779d6220 101 char buffer[JMSG_LENGTH_MAX];
shoaib_ahmed 0:791a779d6220 102
shoaib_ahmed 0:791a779d6220 103 /* Create the message */
shoaib_ahmed 0:791a779d6220 104 (*cinfo->err->format_message) (cinfo, buffer);
shoaib_ahmed 0:791a779d6220 105
shoaib_ahmed 0:791a779d6220 106 #ifdef USE_WINDOWS_MESSAGEBOX
shoaib_ahmed 0:791a779d6220 107 /* Display it in a message dialog box */
shoaib_ahmed 0:791a779d6220 108 MessageBox(GetActiveWindow(), buffer, "JPEG Library Error",
shoaib_ahmed 0:791a779d6220 109 MB_OK | MB_ICONERROR);
shoaib_ahmed 0:791a779d6220 110 #else
shoaib_ahmed 0:791a779d6220 111 /* Send it to stderr, adding a newline */
shoaib_ahmed 0:791a779d6220 112 fprintf(stderr, "%s\n", buffer);
shoaib_ahmed 0:791a779d6220 113 #endif
shoaib_ahmed 0:791a779d6220 114 }
shoaib_ahmed 0:791a779d6220 115
shoaib_ahmed 0:791a779d6220 116
shoaib_ahmed 0:791a779d6220 117 /*
shoaib_ahmed 0:791a779d6220 118 * Decide whether to emit a trace or warning message.
shoaib_ahmed 0:791a779d6220 119 * msg_level is one of:
shoaib_ahmed 0:791a779d6220 120 * -1: recoverable corrupt-data warning, may want to abort.
shoaib_ahmed 0:791a779d6220 121 * 0: important advisory messages (always display to user).
shoaib_ahmed 0:791a779d6220 122 * 1: first level of tracing detail.
shoaib_ahmed 0:791a779d6220 123 * 2,3,...: successively more detailed tracing messages.
shoaib_ahmed 0:791a779d6220 124 * An application might override this method if it wanted to abort on warnings
shoaib_ahmed 0:791a779d6220 125 * or change the policy about which messages to display.
shoaib_ahmed 0:791a779d6220 126 */
shoaib_ahmed 0:791a779d6220 127
shoaib_ahmed 0:791a779d6220 128 METHODDEF(void)
shoaib_ahmed 0:791a779d6220 129 emit_message (j_common_ptr cinfo, int msg_level)
shoaib_ahmed 0:791a779d6220 130 {
shoaib_ahmed 0:791a779d6220 131 struct jpeg_error_mgr * err = cinfo->err;
shoaib_ahmed 0:791a779d6220 132
shoaib_ahmed 0:791a779d6220 133 if (msg_level < 0) {
shoaib_ahmed 0:791a779d6220 134 /* It's a warning message. Since corrupt files may generate many warnings,
shoaib_ahmed 0:791a779d6220 135 * the policy implemented here is to show only the first warning,
shoaib_ahmed 0:791a779d6220 136 * unless trace_level >= 3.
shoaib_ahmed 0:791a779d6220 137 */
shoaib_ahmed 0:791a779d6220 138 if (err->num_warnings == 0 || err->trace_level >= 3)
shoaib_ahmed 0:791a779d6220 139 (*err->output_message) (cinfo);
shoaib_ahmed 0:791a779d6220 140 /* Always count warnings in num_warnings. */
shoaib_ahmed 0:791a779d6220 141 err->num_warnings++;
shoaib_ahmed 0:791a779d6220 142 } else {
shoaib_ahmed 0:791a779d6220 143 /* It's a trace message. Show it if trace_level >= msg_level. */
shoaib_ahmed 0:791a779d6220 144 if (err->trace_level >= msg_level)
shoaib_ahmed 0:791a779d6220 145 (*err->output_message) (cinfo);
shoaib_ahmed 0:791a779d6220 146 }
shoaib_ahmed 0:791a779d6220 147 }
shoaib_ahmed 0:791a779d6220 148
shoaib_ahmed 0:791a779d6220 149
shoaib_ahmed 0:791a779d6220 150 /*
shoaib_ahmed 0:791a779d6220 151 * Format a message string for the most recent JPEG error or message.
shoaib_ahmed 0:791a779d6220 152 * The message is stored into buffer, which should be at least JMSG_LENGTH_MAX
shoaib_ahmed 0:791a779d6220 153 * characters. Note that no '\n' character is added to the string.
shoaib_ahmed 0:791a779d6220 154 * Few applications should need to override this method.
shoaib_ahmed 0:791a779d6220 155 */
shoaib_ahmed 0:791a779d6220 156
shoaib_ahmed 0:791a779d6220 157 METHODDEF(void)
shoaib_ahmed 0:791a779d6220 158 format_message (j_common_ptr cinfo, char * buffer)
shoaib_ahmed 0:791a779d6220 159 {
shoaib_ahmed 0:791a779d6220 160 struct jpeg_error_mgr * err = cinfo->err;
shoaib_ahmed 0:791a779d6220 161 int msg_code = err->msg_code;
shoaib_ahmed 0:791a779d6220 162 const char * msgtext = NULL;
shoaib_ahmed 0:791a779d6220 163 const char * msgptr;
shoaib_ahmed 0:791a779d6220 164 char ch;
shoaib_ahmed 0:791a779d6220 165 boolean isstring;
shoaib_ahmed 0:791a779d6220 166
shoaib_ahmed 0:791a779d6220 167 /* Look up message string in proper table */
shoaib_ahmed 0:791a779d6220 168 if (msg_code > 0 && msg_code <= err->last_jpeg_message) {
shoaib_ahmed 0:791a779d6220 169 msgtext = err->jpeg_message_table[msg_code];
shoaib_ahmed 0:791a779d6220 170 } else if (err->addon_message_table != NULL &&
shoaib_ahmed 0:791a779d6220 171 msg_code >= err->first_addon_message &&
shoaib_ahmed 0:791a779d6220 172 msg_code <= err->last_addon_message) {
shoaib_ahmed 0:791a779d6220 173 msgtext = err->addon_message_table[msg_code - err->first_addon_message];
shoaib_ahmed 0:791a779d6220 174 }
shoaib_ahmed 0:791a779d6220 175
shoaib_ahmed 0:791a779d6220 176 /* Defend against bogus message number */
shoaib_ahmed 0:791a779d6220 177 if (msgtext == NULL) {
shoaib_ahmed 0:791a779d6220 178 err->msg_parm.i[0] = msg_code;
shoaib_ahmed 0:791a779d6220 179 msgtext = err->jpeg_message_table[0];
shoaib_ahmed 0:791a779d6220 180 }
shoaib_ahmed 0:791a779d6220 181
shoaib_ahmed 0:791a779d6220 182 /* Check for string parameter, as indicated by %s in the message text */
shoaib_ahmed 0:791a779d6220 183 isstring = FALSE;
shoaib_ahmed 0:791a779d6220 184 msgptr = msgtext;
shoaib_ahmed 0:791a779d6220 185 while ((ch = *msgptr++) != '\0') {
shoaib_ahmed 0:791a779d6220 186 if (ch == '%') {
shoaib_ahmed 0:791a779d6220 187 if (*msgptr == 's') isstring = TRUE;
shoaib_ahmed 0:791a779d6220 188 break;
shoaib_ahmed 0:791a779d6220 189 }
shoaib_ahmed 0:791a779d6220 190 }
shoaib_ahmed 0:791a779d6220 191
shoaib_ahmed 0:791a779d6220 192 /* Format the message into the passed buffer */
shoaib_ahmed 0:791a779d6220 193 if (isstring)
shoaib_ahmed 0:791a779d6220 194 sprintf(buffer, msgtext, err->msg_parm.s);
shoaib_ahmed 0:791a779d6220 195 else
shoaib_ahmed 0:791a779d6220 196 sprintf(buffer, msgtext,
shoaib_ahmed 0:791a779d6220 197 err->msg_parm.i[0], err->msg_parm.i[1],
shoaib_ahmed 0:791a779d6220 198 err->msg_parm.i[2], err->msg_parm.i[3],
shoaib_ahmed 0:791a779d6220 199 err->msg_parm.i[4], err->msg_parm.i[5],
shoaib_ahmed 0:791a779d6220 200 err->msg_parm.i[6], err->msg_parm.i[7]);
shoaib_ahmed 0:791a779d6220 201 }
shoaib_ahmed 0:791a779d6220 202
shoaib_ahmed 0:791a779d6220 203
shoaib_ahmed 0:791a779d6220 204 /*
shoaib_ahmed 0:791a779d6220 205 * Reset error state variables at start of a new image.
shoaib_ahmed 0:791a779d6220 206 * This is called during compression startup to reset trace/error
shoaib_ahmed 0:791a779d6220 207 * processing to default state, without losing any application-specific
shoaib_ahmed 0:791a779d6220 208 * method pointers. An application might possibly want to override
shoaib_ahmed 0:791a779d6220 209 * this method if it has additional error processing state.
shoaib_ahmed 0:791a779d6220 210 */
shoaib_ahmed 0:791a779d6220 211
shoaib_ahmed 0:791a779d6220 212 METHODDEF(void)
shoaib_ahmed 0:791a779d6220 213 reset_error_mgr (j_common_ptr cinfo)
shoaib_ahmed 0:791a779d6220 214 {
shoaib_ahmed 0:791a779d6220 215 cinfo->err->num_warnings = 0;
shoaib_ahmed 0:791a779d6220 216 /* trace_level is not reset since it is an application-supplied parameter */
shoaib_ahmed 0:791a779d6220 217 cinfo->err->msg_code = 0; /* may be useful as a flag for "no error" */
shoaib_ahmed 0:791a779d6220 218 }
shoaib_ahmed 0:791a779d6220 219
shoaib_ahmed 0:791a779d6220 220
shoaib_ahmed 0:791a779d6220 221 /*
shoaib_ahmed 0:791a779d6220 222 * Fill in the standard error-handling methods in a jpeg_error_mgr object.
shoaib_ahmed 0:791a779d6220 223 * Typical call is:
shoaib_ahmed 0:791a779d6220 224 * struct jpeg_compress_struct cinfo;
shoaib_ahmed 0:791a779d6220 225 * struct jpeg_error_mgr err;
shoaib_ahmed 0:791a779d6220 226 *
shoaib_ahmed 0:791a779d6220 227 * cinfo.err = jpeg_std_error(&err);
shoaib_ahmed 0:791a779d6220 228 * after which the application may override some of the methods.
shoaib_ahmed 0:791a779d6220 229 */
shoaib_ahmed 0:791a779d6220 230
shoaib_ahmed 0:791a779d6220 231 GLOBAL(struct jpeg_error_mgr *)
shoaib_ahmed 0:791a779d6220 232 jpeg_std_error (struct jpeg_error_mgr * err)
shoaib_ahmed 0:791a779d6220 233 {
shoaib_ahmed 0:791a779d6220 234 err->error_exit = error_exit;
shoaib_ahmed 0:791a779d6220 235 err->emit_message = emit_message;
shoaib_ahmed 0:791a779d6220 236 err->output_message = output_message;
shoaib_ahmed 0:791a779d6220 237 err->format_message = format_message;
shoaib_ahmed 0:791a779d6220 238 err->reset_error_mgr = reset_error_mgr;
shoaib_ahmed 0:791a779d6220 239
shoaib_ahmed 0:791a779d6220 240 err->trace_level = 0; /* default = no tracing */
shoaib_ahmed 0:791a779d6220 241 err->num_warnings = 0; /* no warnings emitted yet */
shoaib_ahmed 0:791a779d6220 242 err->msg_code = 0; /* may be useful as a flag for "no error" */
shoaib_ahmed 0:791a779d6220 243
shoaib_ahmed 0:791a779d6220 244 /* Initialize message table pointers */
shoaib_ahmed 0:791a779d6220 245 err->jpeg_message_table = jpeg_std_message_table;
shoaib_ahmed 0:791a779d6220 246 err->last_jpeg_message = (int) JMSG_LASTMSGCODE - 1;
shoaib_ahmed 0:791a779d6220 247
shoaib_ahmed 0:791a779d6220 248 err->addon_message_table = NULL;
shoaib_ahmed 0:791a779d6220 249 err->first_addon_message = 0; /* for safety */
shoaib_ahmed 0:791a779d6220 250 err->last_addon_message = 0;
shoaib_ahmed 0:791a779d6220 251
shoaib_ahmed 0:791a779d6220 252 return err;
shoaib_ahmed 0:791a779d6220 253 }