diff options
Diffstat (limited to 'code/jpeg-6/jerror.c')
| -rwxr-xr-x | code/jpeg-6/jerror.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/code/jpeg-6/jerror.c b/code/jpeg-6/jerror.c new file mode 100755 index 0000000..aff0a79 --- /dev/null +++ b/code/jpeg-6/jerror.c @@ -0,0 +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;
+}
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