| 1 |
greg |
1.1 |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
|
|
|
| 3 |
|
|
#ifndef lint |
| 4 |
|
|
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
|
|
#endif |
| 6 |
|
|
|
| 7 |
|
|
/* |
| 8 |
|
|
* program to convert between RADIANCE and Poskanzer Pixmaps |
| 9 |
|
|
*/ |
| 10 |
|
|
|
| 11 |
|
|
#include <stdio.h> |
| 12 |
|
|
|
| 13 |
|
|
#include <ctype.h> |
| 14 |
|
|
|
| 15 |
|
|
#include "color.h" |
| 16 |
|
|
|
| 17 |
|
|
extern double atof(), pow(); |
| 18 |
|
|
|
| 19 |
|
|
int agryscan(), bgryscan(), aclrscan(), bclrscan(); |
| 20 |
|
|
|
| 21 |
|
|
int bradj = 0; /* brightness adjustment */ |
| 22 |
|
|
|
| 23 |
|
|
int maxval = 255; /* maximum primary value */ |
| 24 |
|
|
|
| 25 |
|
|
char *progname; |
| 26 |
|
|
|
| 27 |
|
|
int xmax, ymax; |
| 28 |
|
|
|
| 29 |
|
|
|
| 30 |
|
|
main(argc, argv) |
| 31 |
|
|
int argc; |
| 32 |
|
|
char *argv[]; |
| 33 |
|
|
{ |
| 34 |
|
|
double gamma = 2.2; |
| 35 |
|
|
int binflag = 1; |
| 36 |
|
|
int reverse = 0; |
| 37 |
|
|
int ptype; |
| 38 |
|
|
int i; |
| 39 |
|
|
|
| 40 |
|
|
progname = argv[0]; |
| 41 |
|
|
|
| 42 |
|
|
for (i = 1; i < argc; i++) |
| 43 |
|
|
if (argv[i][0] == '-') |
| 44 |
|
|
switch (argv[i][1]) { |
| 45 |
|
|
case 'g': |
| 46 |
|
|
gamma = atof(argv[++i]); |
| 47 |
|
|
break; |
| 48 |
|
|
case 'e': |
| 49 |
|
|
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
| 50 |
|
|
goto userr; |
| 51 |
|
|
bradj = atoi(argv[++i]); |
| 52 |
|
|
break; |
| 53 |
|
|
case 'a': |
| 54 |
|
|
binflag = 0; |
| 55 |
|
|
break; |
| 56 |
|
|
case 'r': |
| 57 |
|
|
reverse = !reverse; |
| 58 |
|
|
break; |
| 59 |
|
|
default: |
| 60 |
|
|
goto userr; |
| 61 |
|
|
} |
| 62 |
|
|
else |
| 63 |
|
|
break; |
| 64 |
|
|
|
| 65 |
|
|
if (i < argc-2) |
| 66 |
|
|
goto userr; |
| 67 |
|
|
if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
| 68 |
|
|
fprintf(stderr, "%s: can't open input \"%s\"\n", |
| 69 |
|
|
progname, argv[i]); |
| 70 |
|
|
exit(1); |
| 71 |
|
|
} |
| 72 |
|
|
if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
| 73 |
|
|
fprintf(stderr, "can't open output \"%s\"\n", |
| 74 |
|
|
progname, argv[i+1]); |
| 75 |
|
|
exit(1); |
| 76 |
|
|
} |
| 77 |
|
|
setcolrgam(gamma); |
| 78 |
|
|
if (reverse) { |
| 79 |
|
|
/* get header */ |
| 80 |
|
|
if (getc(stdin) != 'P') |
| 81 |
|
|
quiterr("input not a Poskanzer Pixmap"); |
| 82 |
|
|
ptype = getc(stdin); |
| 83 |
|
|
xmax = scanint(stdin); |
| 84 |
|
|
ymax = scanint(stdin); |
| 85 |
|
|
maxval = scanint(stdin); |
| 86 |
|
|
/* put header */ |
| 87 |
|
|
printargs(i, argv, stdout); |
| 88 |
|
|
fputformat(COLRFMT, stdout); |
| 89 |
|
|
putchar('\n'); |
| 90 |
|
|
fputresolu(YMAJOR|YDECR, xmax, ymax, stdout); |
| 91 |
|
|
/* convert file */ |
| 92 |
|
|
switch (ptype) { |
| 93 |
|
|
case '2': |
| 94 |
|
|
ppm2ra(agryscan); |
| 95 |
|
|
break; |
| 96 |
|
|
case '5': |
| 97 |
|
|
ppm2ra(bgryscan); |
| 98 |
|
|
break; |
| 99 |
|
|
case '3': |
| 100 |
|
|
ppm2ra(aclrscan); |
| 101 |
|
|
break; |
| 102 |
|
|
case '6': |
| 103 |
|
|
ppm2ra(bclrscan); |
| 104 |
|
|
break; |
| 105 |
|
|
default: |
| 106 |
|
|
quiterr("unsupported Pixmap type"); |
| 107 |
|
|
} |
| 108 |
|
|
} else { |
| 109 |
|
|
/* get header info. */ |
| 110 |
|
|
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
| 111 |
|
|
fgetresolu(&xmax, &ymax, stdin) != (YMAJOR|YDECR)) |
| 112 |
|
|
quiterr("bad picture format"); |
| 113 |
|
|
/* write PPM header */ |
| 114 |
|
|
printf("P%c\n%d %d\n%d\n", binflag ? '6' : '3', |
| 115 |
|
|
xmax, ymax, maxval); |
| 116 |
|
|
/* convert file */ |
| 117 |
|
|
ra2ppm(binflag); |
| 118 |
|
|
} |
| 119 |
|
|
exit(0); |
| 120 |
|
|
userr: |
| 121 |
|
|
fprintf(stderr, |
| 122 |
|
|
"Usage: %s [-r][-a][-g gamma][-e +/-stops] [input [output]]\n", |
| 123 |
|
|
progname); |
| 124 |
|
|
exit(1); |
| 125 |
|
|
} |
| 126 |
|
|
|
| 127 |
|
|
|
| 128 |
|
|
quiterr(err) /* print message and exit */ |
| 129 |
|
|
char *err; |
| 130 |
|
|
{ |
| 131 |
|
|
if (err != NULL) { |
| 132 |
|
|
fprintf(stderr, "%s: %s\n", progname, err); |
| 133 |
|
|
exit(1); |
| 134 |
|
|
} |
| 135 |
|
|
exit(0); |
| 136 |
|
|
} |
| 137 |
|
|
|
| 138 |
|
|
|
| 139 |
|
|
ppm2ra(getscan) /* convert color Pixmap to Radiance picture */ |
| 140 |
|
|
int (*getscan)(); |
| 141 |
|
|
{ |
| 142 |
|
|
COLR *scanout; |
| 143 |
|
|
register int x; |
| 144 |
|
|
int y; |
| 145 |
|
|
/* allocate scanline */ |
| 146 |
|
|
scanout = (COLR *)malloc(xmax*sizeof(COLR)); |
| 147 |
|
|
if (scanout == NULL) |
| 148 |
|
|
quiterr("out of memory in ppm2ra"); |
| 149 |
|
|
/* convert image */ |
| 150 |
|
|
for (y = ymax-1; y >= 0; y--) { |
| 151 |
|
|
if ((*getscan)(scanout, xmax, stdin) < 0) |
| 152 |
|
|
quiterr("error reading Pixmap"); |
| 153 |
|
|
gambs_colrs(scanout, xmax); |
| 154 |
|
|
if (bradj) |
| 155 |
|
|
shiftcolrs(scanout, xmax, bradj); |
| 156 |
|
|
if (fwritecolrs(scanout, xmax, stdout) < 0) |
| 157 |
|
|
quiterr("error writing Radiance picture"); |
| 158 |
|
|
} |
| 159 |
|
|
/* free scanline */ |
| 160 |
|
|
free((char *)scanout); |
| 161 |
|
|
} |
| 162 |
|
|
|
| 163 |
|
|
|
| 164 |
|
|
ra2ppm(binary) /* convert Radiance picture to Pixmap */ |
| 165 |
|
|
int binary; |
| 166 |
|
|
{ |
| 167 |
|
|
COLR *scanin; |
| 168 |
|
|
register int x; |
| 169 |
|
|
int y; |
| 170 |
|
|
/* allocate scanline */ |
| 171 |
|
|
scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
| 172 |
|
|
if (scanin == NULL) |
| 173 |
|
|
quiterr("out of memory in ra2pr"); |
| 174 |
|
|
/* convert image */ |
| 175 |
|
|
for (y = ymax-1; y >= 0; y--) { |
| 176 |
|
|
if (freadcolrs(scanin, xmax, stdin) < 0) |
| 177 |
|
|
quiterr("error reading Radiance picture"); |
| 178 |
|
|
if (bradj) |
| 179 |
|
|
shiftcolrs(scanin, xmax, bradj); |
| 180 |
|
|
colrs_gambs(scanin, xmax); |
| 181 |
|
|
if (binary) |
| 182 |
|
|
for (x = 0; x < xmax; x++) { |
| 183 |
|
|
putc(scanin[x][RED], stdout); |
| 184 |
|
|
putc(scanin[x][GRN], stdout); |
| 185 |
|
|
putc(scanin[x][BLU], stdout); |
| 186 |
|
|
} |
| 187 |
|
|
else |
| 188 |
|
|
for (x = 0; x < xmax; x++) |
| 189 |
|
|
printf("%d %d %d\n", scanin[x][RED], |
| 190 |
|
|
scanin[x][GRN], |
| 191 |
|
|
scanin[x][BLU]); |
| 192 |
|
|
if (ferror(stdout)) |
| 193 |
|
|
quiterr("error writing Pixmap"); |
| 194 |
|
|
} |
| 195 |
|
|
/* free scanline */ |
| 196 |
|
|
free((char *)scanin); |
| 197 |
|
|
} |
| 198 |
|
|
|
| 199 |
|
|
|
| 200 |
|
|
agryscan(scan, len, fp) /* get an ASCII greyscale scanline */ |
| 201 |
|
|
register COLR *scan; |
| 202 |
|
|
register int len; |
| 203 |
|
|
FILE *fp; |
| 204 |
|
|
{ |
| 205 |
|
|
while (len-- > 0) { |
| 206 |
|
|
scan[0][RED] = |
| 207 |
|
|
scan[0][GRN] = |
| 208 |
|
|
scan[0][BLU] = normval(scanint(fp)); |
| 209 |
|
|
scan++; |
| 210 |
|
|
} |
| 211 |
|
|
return(0); |
| 212 |
|
|
} |
| 213 |
|
|
|
| 214 |
|
|
|
| 215 |
|
|
bgryscan(scan, len, fp) /* get a binary greyscale scanline */ |
| 216 |
|
|
register COLR *scan; |
| 217 |
|
|
int len; |
| 218 |
|
|
register FILE *fp; |
| 219 |
|
|
{ |
| 220 |
|
|
register int c; |
| 221 |
|
|
|
| 222 |
|
|
while (len-- > 0) { |
| 223 |
|
|
if ((c = getc(fp)) == EOF) |
| 224 |
|
|
return(-1); |
| 225 |
|
|
if (maxval != 255) |
| 226 |
|
|
c = normval(c); |
| 227 |
|
|
scan[0][RED] = |
| 228 |
|
|
scan[0][GRN] = |
| 229 |
|
|
scan[0][BLU] = c; |
| 230 |
|
|
scan++; |
| 231 |
|
|
} |
| 232 |
|
|
return(0); |
| 233 |
|
|
} |
| 234 |
|
|
|
| 235 |
|
|
|
| 236 |
|
|
aclrscan(scan, len, fp) /* get an ASCII color scanline */ |
| 237 |
|
|
register COLR *scan; |
| 238 |
|
|
register int len; |
| 239 |
|
|
FILE *fp; |
| 240 |
|
|
{ |
| 241 |
|
|
while (len-- > 0) { |
| 242 |
|
|
scan[0][RED] = normval(scanint(fp)); |
| 243 |
|
|
scan[0][GRN] = normval(scanint(fp)); |
| 244 |
|
|
scan[0][BLU] = normval(scanint(fp)); |
| 245 |
|
|
scan++; |
| 246 |
|
|
} |
| 247 |
|
|
return(0); |
| 248 |
|
|
} |
| 249 |
|
|
|
| 250 |
|
|
|
| 251 |
|
|
bclrscan(scan, len, fp) /* get a binary color scanline */ |
| 252 |
|
|
register COLR *scan; |
| 253 |
|
|
int len; |
| 254 |
|
|
register FILE *fp; |
| 255 |
|
|
{ |
| 256 |
|
|
int r, g, b; |
| 257 |
|
|
|
| 258 |
|
|
while (len-- > 0) { |
| 259 |
|
|
r = getc(fp); |
| 260 |
|
|
g = getc(fp); |
| 261 |
|
|
if ((b = getc(fp)) == EOF) |
| 262 |
|
|
return(-1); |
| 263 |
|
|
if (maxval == 255) { |
| 264 |
|
|
scan[0][RED] = r; |
| 265 |
|
|
scan[0][GRN] = g; |
| 266 |
|
|
scan[0][BLU] = b; |
| 267 |
|
|
} else { |
| 268 |
|
|
scan[0][RED] = normval(r); |
| 269 |
|
|
scan[0][GRN] = normval(g); |
| 270 |
|
|
scan[0][BLU] = normval(b); |
| 271 |
|
|
} |
| 272 |
|
|
scan++; |
| 273 |
|
|
} |
| 274 |
|
|
return(0); |
| 275 |
|
|
} |
| 276 |
|
|
|
| 277 |
|
|
|
| 278 |
|
|
int |
| 279 |
|
|
scanint(fp) /* scan the next positive integer value */ |
| 280 |
|
|
register FILE *fp; |
| 281 |
|
|
{ |
| 282 |
|
|
register int i, c; |
| 283 |
|
|
tryagain: |
| 284 |
|
|
while (isspace(c = getc(fp))) |
| 285 |
|
|
; |
| 286 |
|
|
if (c == EOF) |
| 287 |
|
|
quiterr("unexpected end of file"); |
| 288 |
|
|
if (c == '#') { /* comment */ |
| 289 |
|
|
while ((c = getc(fp)) != EOF && c != '\n') |
| 290 |
|
|
; |
| 291 |
|
|
goto tryagain; |
| 292 |
|
|
} |
| 293 |
|
|
/* should be integer */ |
| 294 |
|
|
i = 0; |
| 295 |
|
|
do { |
| 296 |
|
|
if (!isdigit(c)) |
| 297 |
|
|
quiterr("error reading integer"); |
| 298 |
|
|
i = 10*i + c - '0'; |
| 299 |
|
|
c = getc(fp); |
| 300 |
|
|
} while (c != EOF && !isspace(c)); |
| 301 |
|
|
return(i); |
| 302 |
|
|
} |
| 303 |
|
|
|
| 304 |
|
|
|
| 305 |
|
|
int |
| 306 |
|
|
normval(v) /* normalize a value to [0,255] */ |
| 307 |
|
|
register int v; |
| 308 |
|
|
{ |
| 309 |
|
|
if (v >= maxval) |
| 310 |
|
|
return(255); |
| 311 |
|
|
if (maxval == 255) |
| 312 |
|
|
return(v); |
| 313 |
|
|
return(v*255L/maxval); |
| 314 |
|
|
} |
