static int
checkhead( /* deal with line from header */
char *line,
void *p
)
{
char fmt[32];
double d;
COLOR ctmp;
if (formatval(fmt, line)) {
if (!strcmp(fmt, CIEFMT))
mybright = &xyz_bright;
else if (!strcmp(fmt, COLRFMT))
mybright = &rgb_bright;
else
wrongformat++;
} else if (original && isexpos(line)) {
d = 1.0/exposval(line);
scalecolor(exposure, d);
doexposure++;
} else if (original && iscolcor(line)) {
colcorval(ctmp, line);
setcolor(exposure, colval(exposure,RED)/colval(ctmp,RED),
colval(exposure,GRN)/colval(ctmp,GRN),
colval(exposure,BLU)/colval(ctmp,BLU));
doexposure++;
} else if (header)
fputs(line, stdout);
return(0);
}
static int
headline( /* check header line & echo if requested */
char *s,
void *p
)
{
char fmt[32];
double d;
COLOR ctmp;
if (isheadid(s)) /* header id */
return(0); /* don't echo */
if (formatval(fmt, s)) { /* check format */
if (globmatch(ourfmt, fmt)) {
wrongformat = 0;
strcpy(ourfmt, fmt);
} else
wrongformat = globmatch(PICFMT, fmt) ? 1 : -1;
return(0); /* don't echo */
}
if (isexpos(s)) { /* exposure */
d = exposval(s);
scalecolor(input[nfiles].expos, d);
} else if (iscolcor(s)) { /* color correction */
colcorval(ctmp, s);
multcolor(input[nfiles].expos, ctmp);
} else if (isaspect(s))
input[nfiles].pa *= aspectval(s);
else if (isview(s) && sscanview(&input[nfiles].vw, s) > 0)
gotview++;
if (echoheader) { /* echo line */
putchar('\t');
return(fputs(s, stdout));
}
return(0);
}
