diff options
Diffstat (limited to 'code/jpeg-6/jerror.c')
-rwxr-xr-x | code/jpeg-6/jerror.c | 464 |
1 files changed, 232 insertions, 232 deletions
diff --git a/code/jpeg-6/jerror.c b/code/jpeg-6/jerror.c index aff0a79..255c092 100755 --- a/code/jpeg-6/jerror.c +++ b/code/jpeg-6/jerror.c @@ -1,232 +1,232 @@ -/*
- * jerror.c
- *
- * Copyright (C) 1991-1994, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README file.
- *
- * This file contains simple error-reporting and trace-message routines.
- * These are suitable for Unix-like systems and others where writing to
- * stderr is the right thing to do. Many applications will want to replace
- * some or all of these routines.
- *
- * These routines are used by both the compression and decompression code.
- */
-
-/* this is not a core library module, so it doesn't define JPEG_INTERNALS */
-#include "jinclude.h"
-#include "jpeglib.h"
-#include "jversion.h"
-#include "jerror.h"
-
-#include "../renderer/tr_local.h"
-
-#ifndef EXIT_FAILURE /* define exit() codes if not provided */
-#define EXIT_FAILURE 1
-#endif
-
-
-/*
- * Create the message string table.
- * We do this from the master message list in jerror.h by re-reading
- * jerror.h with a suitable definition for macro JMESSAGE.
- * The message table is made an external symbol just in case any applications
- * want to refer to it directly.
- */
-
-#ifdef NEED_SHORT_EXTERNAL_NAMES
-#define jpeg_std_message_table jMsgTable
-#endif
-
-#define JMESSAGE(code,string) string ,
-
-const char * const jpeg_std_message_table[] = {
-#include "jerror.h"
- NULL
-};
-
-
-/*
- * Error exit handler: must not return to caller.
- *
- * Applications may override this if they want to get control back after
- * an error. Typically one would longjmp somewhere instead of exiting.
- * The setjmp buffer can be made a private field within an expanded error
- * handler object. Note that the info needed to generate an error message
- * is stored in the error object, so you can generate the message now or
- * later, at your convenience.
- * You should make sure that the JPEG object is cleaned up (with jpeg_abort
- * or jpeg_destroy) at some point.
- */
-
-METHODDEF void
-error_exit (j_common_ptr cinfo)
-{
- char buffer[JMSG_LENGTH_MAX];
-
- /* Create the message */
- (*cinfo->err->format_message) (cinfo, buffer);
-
- /* Let the memory manager delete any temp files before we die */
- jpeg_destroy(cinfo);
-
- ri.Error( ERR_FATAL, "%s\n", buffer );
-}
-
-
-/*
- * Actual output of an error or trace message.
- * Applications may override this method to send JPEG messages somewhere
- * other than stderr.
- */
-
-METHODDEF void
-output_message (j_common_ptr cinfo)
-{
- char buffer[JMSG_LENGTH_MAX];
-
- /* Create the message */
- (*cinfo->err->format_message) (cinfo, buffer);
-
- /* Send it to stderr, adding a newline */
- ri.Printf(PRINT_ALL, "%s\n", buffer);
-}
-
-
-/*
- * Decide whether to emit a trace or warning message.
- * msg_level is one of:
- * -1: recoverable corrupt-data warning, may want to abort.
- * 0: important advisory messages (always display to user).
- * 1: first level of tracing detail.
- * 2,3,...: successively more detailed tracing messages.
- * An application might override this method if it wanted to abort on warnings
- * or change the policy about which messages to display.
- */
-
-METHODDEF void
-emit_message (j_common_ptr cinfo, int msg_level)
-{
- struct jpeg_error_mgr * err = cinfo->err;
-
- if (msg_level < 0) {
- /* It's a warning message. Since corrupt files may generate many warnings,
- * the policy implemented here is to show only the first warning,
- * unless trace_level >= 3.
- */
- if (err->num_warnings == 0 || err->trace_level >= 3)
- (*err->output_message) (cinfo);
- /* Always count warnings in num_warnings. */
- err->num_warnings++;
- } else {
- /* It's a trace message. Show it if trace_level >= msg_level. */
- if (err->trace_level >= msg_level)
- (*err->output_message) (cinfo);
- }
-}
-
-
-/*
- * Format a message string for the most recent JPEG error or message.
- * The message is stored into buffer, which should be at least JMSG_LENGTH_MAX
- * characters. Note that no '\n' character is added to the string.
- * Few applications should need to override this method.
- */
-
-METHODDEF void
-format_message (j_common_ptr cinfo, char * buffer)
-{
- struct jpeg_error_mgr * err = cinfo->err;
- int msg_code = err->msg_code;
- const char * msgtext = NULL;
- const char * msgptr;
- char ch;
- boolean isstring;
-
- /* Look up message string in proper table */
- if (msg_code > 0 && msg_code <= err->last_jpeg_message) {
- msgtext = err->jpeg_message_table[msg_code];
- } else if (err->addon_message_table != NULL &&
- msg_code >= err->first_addon_message &&
- msg_code <= err->last_addon_message) {
- msgtext = err->addon_message_table[msg_code - err->first_addon_message];
- }
-
- /* Defend against bogus message number */
- if (msgtext == NULL) {
- err->msg_parm.i[0] = msg_code;
- msgtext = err->jpeg_message_table[0];
- }
-
- /* Check for string parameter, as indicated by %s in the message text */
- isstring = FALSE;
- msgptr = msgtext;
- while ((ch = *msgptr++) != '\0') {
- if (ch == '%') {
- if (*msgptr == 's') isstring = TRUE;
- break;
- }
- }
-
- /* Format the message into the passed buffer */
- if (isstring)
- sprintf(buffer, msgtext, err->msg_parm.s);
- else
- sprintf(buffer, msgtext,
- err->msg_parm.i[0], err->msg_parm.i[1],
- err->msg_parm.i[2], err->msg_parm.i[3],
- err->msg_parm.i[4], err->msg_parm.i[5],
- err->msg_parm.i[6], err->msg_parm.i[7]);
-}
-
-
-/*
- * Reset error state variables at start of a new image.
- * This is called during compression startup to reset trace/error
- * processing to default state, without losing any application-specific
- * method pointers. An application might possibly want to override
- * this method if it has additional error processing state.
- */
-
-METHODDEF void
-reset_error_mgr (j_common_ptr cinfo)
-{
- cinfo->err->num_warnings = 0;
- /* trace_level is not reset since it is an application-supplied parameter */
- cinfo->err->msg_code = 0; /* may be useful as a flag for "no error" */
-}
-
-
-/*
- * Fill in the standard error-handling methods in a jpeg_error_mgr object.
- * Typical call is:
- * struct jpeg_compress_struct cinfo;
- * struct jpeg_error_mgr err;
- *
- * cinfo.err = jpeg_std_error(&err);
- * after which the application may override some of the methods.
- */
-
-GLOBAL struct jpeg_error_mgr *
-jpeg_std_error (struct jpeg_error_mgr * err)
-{
- err->error_exit = error_exit;
- err->emit_message = emit_message;
- err->output_message = output_message;
- err->format_message = format_message;
- err->reset_error_mgr = reset_error_mgr;
-
- err->trace_level = 0; /* default = no tracing */
- err->num_warnings = 0; /* no warnings emitted yet */
- err->msg_code = 0; /* may be useful as a flag for "no error" */
-
- /* Initialize message table pointers */
- err->jpeg_message_table = jpeg_std_message_table;
- err->last_jpeg_message = (int) JMSG_LASTMSGCODE - 1;
-
- err->addon_message_table = NULL;
- err->first_addon_message = 0; /* for safety */
- err->last_addon_message = 0;
-
- return err;
-}
+/* + * jerror.c + * + * Copyright (C) 1991-1994, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains simple error-reporting and trace-message routines. + * These are suitable for Unix-like systems and others where writing to + * stderr is the right thing to do. Many applications will want to replace + * some or all of these routines. + * + * These routines are used by both the compression and decompression code. + */ + +/* this is not a core library module, so it doesn't define JPEG_INTERNALS */ +#include "jinclude.h" +#include "jpeglib.h" +#include "jversion.h" +#include "jerror.h" + +#include "../renderer/tr_local.h" + +#ifndef EXIT_FAILURE /* define exit() codes if not provided */ +#define EXIT_FAILURE 1 +#endif + + +/* + * Create the message string table. + * We do this from the master message list in jerror.h by re-reading + * jerror.h with a suitable definition for macro JMESSAGE. + * The message table is made an external symbol just in case any applications + * want to refer to it directly. + */ + +#ifdef NEED_SHORT_EXTERNAL_NAMES +#define jpeg_std_message_table jMsgTable +#endif + +#define JMESSAGE(code,string) string , + +const char * const jpeg_std_message_table[] = { +#include "jerror.h" + NULL +}; + + +/* + * Error exit handler: must not return to caller. + * + * Applications may override this if they want to get control back after + * an error. Typically one would longjmp somewhere instead of exiting. + * The setjmp buffer can be made a private field within an expanded error + * handler object. Note that the info needed to generate an error message + * is stored in the error object, so you can generate the message now or + * later, at your convenience. + * You should make sure that the JPEG object is cleaned up (with jpeg_abort + * or jpeg_destroy) at some point. + */ + +METHODDEF void +error_exit (j_common_ptr cinfo) +{ + char buffer[JMSG_LENGTH_MAX]; + + /* Create the message */ + (*cinfo->err->format_message) (cinfo, buffer); + + /* Let the memory manager delete any temp files before we die */ + jpeg_destroy(cinfo); + + ri.Error( ERR_FATAL, "%s\n", buffer ); +} + + +/* + * Actual output of an error or trace message. + * Applications may override this method to send JPEG messages somewhere + * other than stderr. + */ + +METHODDEF void +output_message (j_common_ptr cinfo) +{ + char buffer[JMSG_LENGTH_MAX]; + + /* Create the message */ + (*cinfo->err->format_message) (cinfo, buffer); + + /* Send it to stderr, adding a newline */ + ri.Printf(PRINT_ALL, "%s\n", buffer); +} + + +/* + * Decide whether to emit a trace or warning message. + * msg_level is one of: + * -1: recoverable corrupt-data warning, may want to abort. + * 0: important advisory messages (always display to user). + * 1: first level of tracing detail. + * 2,3,...: successively more detailed tracing messages. + * An application might override this method if it wanted to abort on warnings + * or change the policy about which messages to display. + */ + +METHODDEF void +emit_message (j_common_ptr cinfo, int msg_level) +{ + struct jpeg_error_mgr * err = cinfo->err; + + if (msg_level < 0) { + /* It's a warning message. Since corrupt files may generate many warnings, + * the policy implemented here is to show only the first warning, + * unless trace_level >= 3. + */ + if (err->num_warnings == 0 || err->trace_level >= 3) + (*err->output_message) (cinfo); + /* Always count warnings in num_warnings. */ + err->num_warnings++; + } else { + /* It's a trace message. Show it if trace_level >= msg_level. */ + if (err->trace_level >= msg_level) + (*err->output_message) (cinfo); + } +} + + +/* + * Format a message string for the most recent JPEG error or message. + * The message is stored into buffer, which should be at least JMSG_LENGTH_MAX + * characters. Note that no '\n' character is added to the string. + * Few applications should need to override this method. + */ + +METHODDEF void +format_message (j_common_ptr cinfo, char * buffer) +{ + struct jpeg_error_mgr * err = cinfo->err; + int msg_code = err->msg_code; + const char * msgtext = NULL; + const char * msgptr; + char ch; + boolean isstring; + + /* Look up message string in proper table */ + if (msg_code > 0 && msg_code <= err->last_jpeg_message) { + msgtext = err->jpeg_message_table[msg_code]; + } else if (err->addon_message_table != NULL && + msg_code >= err->first_addon_message && + msg_code <= err->last_addon_message) { + msgtext = err->addon_message_table[msg_code - err->first_addon_message]; + } + + /* Defend against bogus message number */ + if (msgtext == NULL) { + err->msg_parm.i[0] = msg_code; + msgtext = err->jpeg_message_table[0]; + } + + /* Check for string parameter, as indicated by %s in the message text */ + isstring = FALSE; + msgptr = msgtext; + while ((ch = *msgptr++) != '\0') { + if (ch == '%') { + if (*msgptr == 's') isstring = TRUE; + break; + } + } + + /* Format the message into the passed buffer */ + if (isstring) + sprintf(buffer, msgtext, err->msg_parm.s); + else + sprintf(buffer, msgtext, + err->msg_parm.i[0], err->msg_parm.i[1], + err->msg_parm.i[2], err->msg_parm.i[3], + err->msg_parm.i[4], err->msg_parm.i[5], + err->msg_parm.i[6], err->msg_parm.i[7]); +} + + +/* + * Reset error state variables at start of a new image. + * This is called during compression startup to reset trace/error + * processing to default state, without losing any application-specific + * method pointers. An application might possibly want to override + * this method if it has additional error processing state. + */ + +METHODDEF void +reset_error_mgr (j_common_ptr cinfo) +{ + cinfo->err->num_warnings = 0; + /* trace_level is not reset since it is an application-supplied parameter */ + cinfo->err->msg_code = 0; /* may be useful as a flag for "no error" */ +} + + +/* + * Fill in the standard error-handling methods in a jpeg_error_mgr object. + * Typical call is: + * struct jpeg_compress_struct cinfo; + * struct jpeg_error_mgr err; + * + * cinfo.err = jpeg_std_error(&err); + * after which the application may override some of the methods. + */ + +GLOBAL struct jpeg_error_mgr * +jpeg_std_error (struct jpeg_error_mgr * err) +{ + err->error_exit = error_exit; + err->emit_message = emit_message; + err->output_message = output_message; + err->format_message = format_message; + err->reset_error_mgr = reset_error_mgr; + + err->trace_level = 0; /* default = no tracing */ + err->num_warnings = 0; /* no warnings emitted yet */ + err->msg_code = 0; /* may be useful as a flag for "no error" */ + + /* Initialize message table pointers */ + err->jpeg_message_table = jpeg_std_message_table; + err->last_jpeg_message = (int) JMSG_LASTMSGCODE - 1; + + err->addon_message_table = NULL; + err->first_addon_message = 0; /* for safety */ + err->last_addon_message = 0; + + return err; +} |