| 83 |
|
int dtype; /* data type */ |
| 84 |
|
int need2swap; /* need byte swap? */ |
| 85 |
|
int nrows, ncols; /* matrix size */ |
| 86 |
+ |
COLOR expos; /* exposure value */ |
| 87 |
|
char *err; /* error message */ |
| 88 |
|
} CMINFO; /* header info record */ |
| 89 |
|
|
| 110 |
|
ip->need2swap = (nativebigendian() != i); |
| 111 |
|
return(0); |
| 112 |
|
} |
| 113 |
+ |
if (isexpos(s)) { |
| 114 |
+ |
double d = exposval(s); |
| 115 |
+ |
scalecolor(ip->expos, d); |
| 116 |
+ |
return(0); |
| 117 |
+ |
} |
| 118 |
+ |
if (iscolcor(s)) { |
| 119 |
+ |
COLOR ctmp; |
| 120 |
+ |
colcorval(ctmp, s); |
| 121 |
+ |
multcolor(ip->expos, ctmp); |
| 122 |
+ |
return(0); |
| 123 |
+ |
} |
| 124 |
|
if (!formatval(fmt, s)) |
| 125 |
|
return(0); |
| 126 |
|
for (i = 1; i < DTend; i++) |
| 131 |
|
|
| 132 |
|
/* Load header to obtain/check data type and number of columns */ |
| 133 |
|
char * |
| 134 |
< |
cm_getheader(int *dt, int *nr, int *nc, int *swp, FILE *fp) |
| 134 |
> |
cm_getheader(int *dt, int *nr, int *nc, int *swp, COLOR scale, FILE *fp) |
| 135 |
|
{ |
| 136 |
|
CMINFO cmi; |
| 137 |
|
/* read header */ |
| 138 |
|
cmi.dtype = DTfromHeader; |
| 139 |
|
cmi.need2swap = 0; |
| 140 |
+ |
cmi.expos[0] = cmi.expos[1] = cmi.expos[2] = 1.f; |
| 141 |
|
cmi.nrows = cmi.ncols = 0; |
| 142 |
|
cmi.err = "unexpected EOF in header"; |
| 143 |
|
if (getheader(fp, get_cminfo, &cmi) < 0) |
| 165 |
|
} |
| 166 |
|
if (swp) /* get/check swap? */ |
| 167 |
|
*swp = cmi.need2swap; |
| 168 |
+ |
if (scale) { /* transfer exposure comp. */ |
| 169 |
+ |
scale[0] = 1.f/cmi.expos[0]; |
| 170 |
+ |
scale[1] = 1.f/cmi.expos[1]; |
| 171 |
+ |
scale[2] = 1.f/cmi.expos[2]; |
| 172 |
+ |
} |
| 173 |
|
return(NULL); |
| 174 |
|
} |
| 175 |
|
|
| 176 |
|
/* Allocate and load image data into matrix */ |
| 177 |
|
static CMATRIX * |
| 178 |
< |
cm_load_rgbe(FILE *fp, int nrows, int ncols) |
| 178 |
> |
cm_load_rgbe(FILE *fp, int nrows, int ncols, COLOR scale) |
| 179 |
|
{ |
| 180 |
+ |
int doscale; |
| 181 |
|
CMATRIX *cm; |
| 182 |
|
COLORV *mp; |
| 183 |
|
/* header already loaded */ |
| 188 |
|
cm = cm_alloc(nrows, ncols); |
| 189 |
|
if (!cm) |
| 190 |
|
return(NULL); |
| 191 |
+ |
doscale = (scale[0] < .99) | (scale[0] > 1.01) | |
| 192 |
+ |
(scale[1] < .99) | (scale[1] > 1.01) | |
| 193 |
+ |
(scale[2] < .99) | (scale[2] > 1.01) ; |
| 194 |
|
mp = cm->cmem; |
| 195 |
|
while (nrows--) { |
| 196 |
|
if (freadscan((COLOR *)mp, ncols, fp) < 0) { |
| 198 |
|
cm_free(cm); |
| 199 |
|
return(NULL); |
| 200 |
|
} |
| 201 |
< |
mp += 3*ncols; |
| 201 |
> |
if (doscale) { |
| 202 |
> |
int i = ncols; |
| 203 |
> |
while (i--) { |
| 204 |
> |
*mp++ *= scale[0]; |
| 205 |
> |
*mp++ *= scale[1]; |
| 206 |
> |
*mp++ *= scale[2]; |
| 207 |
> |
} |
| 208 |
> |
} else |
| 209 |
> |
mp += 3*ncols; |
| 210 |
|
} /* caller closes stream */ |
| 211 |
|
return(cm); |
| 212 |
|
} |
| 218 |
|
const int ROWINC = 2048; |
| 219 |
|
FILE *fp = stdin; |
| 220 |
|
int swap = 0; |
| 221 |
+ |
COLOR scale; |
| 222 |
|
CMATRIX *cm; |
| 223 |
|
|
| 224 |
|
if (!inspec) |
| 239 |
|
if (dtype != DTascii) |
| 240 |
|
SET_FILE_BINARY(fp); /* doesn't really work */ |
| 241 |
|
if (!dtype | !ncols) { /* expecting header? */ |
| 242 |
< |
char *err = cm_getheader(&dtype, &nrows, &ncols, &swap, fp); |
| 242 |
> |
char *err = cm_getheader(&dtype, &nrows, &ncols, &swap, scale, fp); |
| 243 |
|
if (err) |
| 244 |
|
error(USER, err); |
| 245 |
|
if (ncols <= 0) |
| 252 |
|
break; |
| 253 |
|
case DTrgbe: |
| 254 |
|
case DTxyze: |
| 255 |
< |
cm = cm_load_rgbe(fp, nrows, ncols); |
| 255 |
> |
cm = cm_load_rgbe(fp, nrows, ncols, scale); |
| 256 |
|
goto cleanup; |
| 257 |
|
default: |
| 258 |
|
error(USER, "unexpected data type in cm_load()"); |