| 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 24-bit TIFF files. |
| 9 |
*/ |
| 10 |
|
| 11 |
#include <stdio.h> |
| 12 |
|
| 13 |
#include <math.h> |
| 14 |
|
| 15 |
#include "tiffio.h" |
| 16 |
|
| 17 |
#include "color.h" |
| 18 |
|
| 19 |
#include "resolu.h" |
| 20 |
|
| 21 |
|
| 22 |
extern char *malloc(), *realloc(); |
| 23 |
|
| 24 |
int lzcomp = 0; /* use Lempel-Ziv compression? */ |
| 25 |
|
| 26 |
int greyscale = 0; /* produce greyscale image? */ |
| 27 |
|
| 28 |
double gamcor = 2.2; /* gamma correction */ |
| 29 |
|
| 30 |
int bradj = 0; /* brightness adjustment */ |
| 31 |
|
| 32 |
char *progname; |
| 33 |
|
| 34 |
|
| 35 |
main(argc, argv) |
| 36 |
int argc; |
| 37 |
char *argv[]; |
| 38 |
{ |
| 39 |
int reverse = 0; |
| 40 |
int i; |
| 41 |
|
| 42 |
progname = argv[0]; |
| 43 |
|
| 44 |
for (i = 1; i < argc; i++) |
| 45 |
if (argv[i][0] == '-') |
| 46 |
switch (argv[i][1]) { |
| 47 |
case 'g': |
| 48 |
gamcor = atof(argv[++i]); |
| 49 |
break; |
| 50 |
case 'z': |
| 51 |
lzcomp = !lzcomp; |
| 52 |
break; |
| 53 |
case 'b': |
| 54 |
greyscale = !greyscale; |
| 55 |
break; |
| 56 |
case 'e': |
| 57 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
| 58 |
goto userr; |
| 59 |
bradj = atoi(argv[++i]); |
| 60 |
break; |
| 61 |
case 'r': |
| 62 |
reverse = !reverse; |
| 63 |
break; |
| 64 |
case '\0': |
| 65 |
goto doneopts; |
| 66 |
default: |
| 67 |
goto userr; |
| 68 |
} |
| 69 |
else |
| 70 |
break; |
| 71 |
doneopts: |
| 72 |
setcolrgam(gamcor); |
| 73 |
|
| 74 |
if (reverse) |
| 75 |
if (i != argc-2 && i != argc-1) |
| 76 |
goto userr; |
| 77 |
else |
| 78 |
tiff2ra(argv[i], argv[i+1]); |
| 79 |
else |
| 80 |
if (i != argc-2) |
| 81 |
goto userr; |
| 82 |
else |
| 83 |
ra2tiff(argv[i], argv[i+1]); |
| 84 |
|
| 85 |
exit(0); |
| 86 |
userr: |
| 87 |
fprintf(stderr, |
| 88 |
"Usage: %s [-r][-b][-z][-e +/-stops][-g gamma] input output\n", |
| 89 |
progname); |
| 90 |
exit(1); |
| 91 |
} |
| 92 |
|
| 93 |
|
| 94 |
quiterr(err) /* print message and exit */ |
| 95 |
char *err; |
| 96 |
{ |
| 97 |
if (err != NULL) { |
| 98 |
fprintf(stderr, "%s: %s\n", progname, err); |
| 99 |
exit(1); |
| 100 |
} |
| 101 |
exit(0); |
| 102 |
} |
| 103 |
|
| 104 |
|
| 105 |
tiff2ra(inpf, outf) /* convert TIFF file to Radiance picture */ |
| 106 |
char *inpf, *outf; |
| 107 |
{ |
| 108 |
unsigned long xmax, ymax; |
| 109 |
TIFF *tif; |
| 110 |
unsigned short pconfig, nsamps; |
| 111 |
unsigned short hi; |
| 112 |
register BYTE *scanin; |
| 113 |
register COLR *scanout; |
| 114 |
register int x; |
| 115 |
int y; |
| 116 |
/* open/check TIFF file */ |
| 117 |
if ((tif = TIFFOpen(inpf, "r")) == NULL) |
| 118 |
quiterr("cannot open TIFF input"); |
| 119 |
if (!TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &nsamps) || |
| 120 |
(nsamps != 1 && nsamps != 3)) |
| 121 |
quiterr("unsupported samples per pixel"); |
| 122 |
if (!TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &hi) || hi != 8) |
| 123 |
quiterr("unsupported bits per sample"); |
| 124 |
if (TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &hi) && |
| 125 |
hi != (nsamps==1 ? 1 : 2)) |
| 126 |
quiterr("unsupported photometric interpretation"); |
| 127 |
if (!TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &pconfig) || |
| 128 |
(pconfig != 1 && pconfig != 2)) |
| 129 |
quiterr("unsupported planar configuration"); |
| 130 |
if (!TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &xmax) || |
| 131 |
!TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &ymax)) |
| 132 |
quiterr("unknown input image resolution"); |
| 133 |
/* allocate scanlines */ |
| 134 |
scanin = (BYTE *)malloc(TIFFScanlineSize(tif)); |
| 135 |
scanout = (COLR *)malloc(xmax*sizeof(COLR)); |
| 136 |
if (scanin == NULL || scanout == NULL) |
| 137 |
quiterr("out of memory in tiff2ra"); |
| 138 |
/* open output and write header */ |
| 139 |
if (outf != NULL && strcmp(outf, "-") && |
| 140 |
freopen(outf, "w", stdout) == NULL) |
| 141 |
quiterr("cannot open Radiance output file"); |
| 142 |
newheader("RADIANCE", stdout); |
| 143 |
fputs(progname, stdout); |
| 144 |
if (bradj) |
| 145 |
printf(" -e %+d", bradj); |
| 146 |
fputs(" -r\n", stdout); |
| 147 |
fputformat(COLRFMT, stdout); |
| 148 |
putchar('\n'); |
| 149 |
fprtresolu((int)xmax, (int)ymax, stdout); |
| 150 |
/* convert image */ |
| 151 |
if (nsamps == 1) |
| 152 |
pconfig = 1; |
| 153 |
for (y = 0; y < ymax; y++) { |
| 154 |
if (pconfig == 1) { |
| 155 |
if (TIFFReadScanline(tif, scanin, y, 0) < 0) |
| 156 |
goto readerr; |
| 157 |
if (nsamps == 1) |
| 158 |
for (x = 0; x < xmax; x++) |
| 159 |
scanout[x][RED] = |
| 160 |
scanout[x][GRN] = |
| 161 |
scanout[x][BLU] = scanin[x]; |
| 162 |
else |
| 163 |
for (x = 0; x < xmax; x++) { |
| 164 |
scanout[x][RED] = scanin[3*x]; |
| 165 |
scanout[x][GRN] = scanin[3*x+1]; |
| 166 |
scanout[x][BLU] = scanin[3*x+2]; |
| 167 |
} |
| 168 |
} else { |
| 169 |
if (TIFFReadScanline(tif, scanin, y, 0) < 0) |
| 170 |
goto readerr; |
| 171 |
for (x = 0; x < xmax; x++) |
| 172 |
scanout[x][RED] = scanin[x]; |
| 173 |
if (TIFFReadScanline(tif, scanin, y, 1) < 0) |
| 174 |
goto readerr; |
| 175 |
for (x = 0; x < xmax; x++) |
| 176 |
scanout[x][GRN] = scanin[x]; |
| 177 |
if (TIFFReadScanline(tif, scanin, y, 2) < 0) |
| 178 |
goto readerr; |
| 179 |
for (x = 0; x < xmax; x++) |
| 180 |
scanout[x][BLU] = scanin[x]; |
| 181 |
} |
| 182 |
gambs_colrs(scanout, xmax); |
| 183 |
if (bradj) |
| 184 |
shiftcolrs(scanout, xmax, bradj); |
| 185 |
if (fwritecolrs(scanout, xmax, stdout) < 0) |
| 186 |
quiterr("error writing Radiance picture"); |
| 187 |
} |
| 188 |
/* clean up */ |
| 189 |
free((char *)scanin); |
| 190 |
free((char *)scanout); |
| 191 |
TIFFClose(tif); |
| 192 |
return; |
| 193 |
readerr: |
| 194 |
quiterr("error reading TIFF input"); |
| 195 |
} |
| 196 |
|
| 197 |
|
| 198 |
ra2tiff(inpf, outf) /* convert Radiance file to 24-bit TIFF */ |
| 199 |
char *inpf, *outf; |
| 200 |
{ |
| 201 |
TIFF *tif; |
| 202 |
int xmax, ymax; |
| 203 |
BYTE *scanout; |
| 204 |
COLR *scanin; |
| 205 |
register int x; |
| 206 |
int y; |
| 207 |
/* open Radiance file */ |
| 208 |
if (strcmp(inpf, "-") && freopen(inpf, "r", stdin) == NULL) |
| 209 |
quiterr("cannot open Radiance input file"); |
| 210 |
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
| 211 |
fgetresolu(&xmax, &ymax, stdin) < 0) |
| 212 |
quiterr("bad Radiance picture"); |
| 213 |
/* open TIFF file */ |
| 214 |
if ((tif = TIFFOpen(outf, "w")) == NULL) |
| 215 |
quiterr("cannot open TIFF output"); |
| 216 |
TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, (unsigned long)xmax); |
| 217 |
TIFFSetField(tif, TIFFTAG_IMAGELENGTH, (unsigned long)ymax); |
| 218 |
TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, greyscale ? 1 : 3); |
| 219 |
TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8); |
| 220 |
TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, greyscale ? 1 : 2); |
| 221 |
TIFFSetField(tif, TIFFTAG_PLANARCONFIG, 1); |
| 222 |
if (lzcomp) |
| 223 |
TIFFSetField(tif, TIFFTAG_COMPRESSION, (unsigned short)5); |
| 224 |
/* allocate scanlines */ |
| 225 |
scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
| 226 |
scanout = (BYTE *)malloc(TIFFScanlineSize(tif)); |
| 227 |
if (scanin == NULL || scanout == NULL) |
| 228 |
quiterr("out of memory in ra2tiff"); |
| 229 |
/* convert image */ |
| 230 |
for (y = 0; y < ymax; y++) { |
| 231 |
if (freadcolrs(scanin, xmax, stdin) < 0) |
| 232 |
quiterr("error reading Radiance picture"); |
| 233 |
if (bradj) |
| 234 |
shiftcolrs(scanin, xmax, bradj); |
| 235 |
if (greyscale) { |
| 236 |
for (x = 0; x < xmax; x++) |
| 237 |
scanin[x][GRN] = normbright(scanin[x]); |
| 238 |
colrs_gambs(scanin, xmax); |
| 239 |
for (x = 0; x < xmax; x++) |
| 240 |
scanout[x] = scanin[x][GRN]; |
| 241 |
} else { |
| 242 |
colrs_gambs(scanin, xmax); |
| 243 |
for (x = 0; x < xmax; x++) { |
| 244 |
scanout[3*x] = scanin[x][RED]; |
| 245 |
scanout[3*x+1] = scanin[x][GRN]; |
| 246 |
scanout[3*x+2] = scanin[x][BLU]; |
| 247 |
} |
| 248 |
} |
| 249 |
if (TIFFWriteScanline(tif, scanout, y, 0) < 0) |
| 250 |
quiterr("error writing TIFF output"); |
| 251 |
} |
| 252 |
/* clean up */ |
| 253 |
free((char *)scanin); |
| 254 |
free((char *)scanout); |
| 255 |
TIFFClose(tif); |
| 256 |
} |
