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/*
* Extend libjpegs error handler to use setjmp/longjmp
*/
#include <jpeglib.h>
#include <setjmp.h>
struct myerrmgr
{
struct jpeg_error_mgr super;
jmp_buf jb;
char msg[JMSG_LENGTH_MAX];
};
static void myerrexit(j_common_ptr cinfo)
{
struct myerrmgr *err = (struct myerrmgr *)cinfo->err;
char msgbuf[JMSG_LENGTH_MAX];
err->super.format_message(cinfo, msgbuf);
strlcpy(err->msg, msgbuf, sizeof err->msg);
longjmp(err->jb, 1);
}
static void myoutmess(j_common_ptr cinfo)
{
struct myerrmgr *err = (struct myerrmgr *)cinfo->err;
char msgbuf[JMSG_LENGTH_MAX];
err->super.format_message(cinfo, msgbuf);
fprintf(stderr, "ioerror: dct: %s", msgbuf);
}
static void myiniterr(struct myerrmgr *err)
{
jpeg_std_error(&err->super);
err->super.error_exit = myerrexit;
err->super.output_message = myoutmess;
}
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