| 1 |
greg |
2.3 |
/* Copyright (c) 1992 Regents of the University of California */ |
| 2 |
greg |
1.1 |
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| 3 |
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#ifndef lint |
| 4 |
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static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
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#endif |
| 6 |
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| 7 |
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/* |
| 8 |
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* program to convert between RADIANCE and Poskanzer Pixmaps |
| 9 |
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*/ |
| 10 |
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| 11 |
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#include <stdio.h> |
| 12 |
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| 13 |
greg |
2.3 |
#ifdef MSDOS |
| 14 |
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#include <fcntl.h> |
| 15 |
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#endif |
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| 17 |
greg |
2.4 |
#include <math.h> |
| 18 |
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greg |
1.1 |
#include <ctype.h> |
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| 21 |
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#include "color.h" |
| 22 |
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| 23 |
greg |
1.2 |
#include "resolu.h" |
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| 25 |
greg |
1.1 |
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| 26 |
greg |
2.3 |
extern char *malloc(); |
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greg |
1.1 |
int agryscan(), bgryscan(), aclrscan(), bclrscan(); |
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int bradj = 0; /* brightness adjustment */ |
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int maxval = 255; /* maximum primary value */ |
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char *progname; |
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int xmax, ymax; |
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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greg |
2.3 |
char inpbuf[2]; |
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greg |
2.5 |
double gamcor = 2.2; |
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greg |
1.1 |
int binflag = 1; |
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int reverse = 0; |
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int ptype; |
| 48 |
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int i; |
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progname = argv[0]; |
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for (i = 1; i < argc; i++) |
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if (argv[i][0] == '-') |
| 54 |
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switch (argv[i][1]) { |
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case 'g': |
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greg |
2.5 |
gamcor = atof(argv[++i]); |
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greg |
1.1 |
break; |
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case 'e': |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
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goto userr; |
| 61 |
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bradj = atoi(argv[++i]); |
| 62 |
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break; |
| 63 |
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case 'a': |
| 64 |
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binflag = 0; |
| 65 |
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break; |
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case 'r': |
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reverse = !reverse; |
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break; |
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default: |
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goto userr; |
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} |
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else |
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break; |
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| 75 |
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if (i < argc-2) |
| 76 |
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goto userr; |
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if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
| 78 |
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fprintf(stderr, "%s: can't open input \"%s\"\n", |
| 79 |
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progname, argv[i]); |
| 80 |
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exit(1); |
| 81 |
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} |
| 82 |
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
| 83 |
greg |
2.6 |
fprintf(stderr, "%s: can't open output \"%s\"\n", |
| 84 |
greg |
1.1 |
progname, argv[i+1]); |
| 85 |
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exit(1); |
| 86 |
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} |
| 87 |
greg |
2.5 |
setcolrgam(gamcor); |
| 88 |
greg |
1.1 |
if (reverse) { |
| 89 |
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/* get header */ |
| 90 |
greg |
2.3 |
if (read(fileno(stdin), inpbuf, 2) != 2 || inpbuf[0] != 'P') |
| 91 |
greg |
1.1 |
quiterr("input not a Poskanzer Pixmap"); |
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greg |
2.3 |
ptype = inpbuf[1]; |
| 93 |
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#ifdef MSDOS |
| 94 |
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if (ptype > 4) |
| 95 |
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setmode(fileno(stdin), O_BINARY); |
| 96 |
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setmode(fileno(stdout), O_BINARY); |
| 97 |
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#endif |
| 98 |
greg |
1.1 |
xmax = scanint(stdin); |
| 99 |
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ymax = scanint(stdin); |
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maxval = scanint(stdin); |
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/* put header */ |
| 102 |
greg |
2.7 |
newheader("RADIANCE", stdout); |
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greg |
1.1 |
printargs(i, argv, stdout); |
| 104 |
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fputformat(COLRFMT, stdout); |
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putchar('\n'); |
| 106 |
greg |
1.2 |
fprtresolu(xmax, ymax, stdout); |
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greg |
1.1 |
/* convert file */ |
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switch (ptype) { |
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case '2': |
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ppm2ra(agryscan); |
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break; |
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case '5': |
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ppm2ra(bgryscan); |
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break; |
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case '3': |
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ppm2ra(aclrscan); |
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break; |
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case '6': |
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ppm2ra(bclrscan); |
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break; |
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default: |
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quiterr("unsupported Pixmap type"); |
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} |
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} else { |
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greg |
2.3 |
#ifdef MSDOS |
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setmode(fileno(stdin), O_BINARY); |
| 127 |
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if (binflag) |
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setmode(fileno(stdout), O_BINARY); |
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#endif |
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greg |
1.1 |
/* get header info. */ |
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if (checkheader(stdin, COLRFMT, NULL) < 0 || |
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greg |
1.2 |
fgetresolu(&xmax, &ymax, stdin) < 0) |
| 133 |
greg |
1.1 |
quiterr("bad picture format"); |
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/* write PPM header */ |
| 135 |
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printf("P%c\n%d %d\n%d\n", binflag ? '6' : '3', |
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xmax, ymax, maxval); |
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/* convert file */ |
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ra2ppm(binflag); |
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} |
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exit(0); |
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userr: |
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fprintf(stderr, |
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"Usage: %s [-r][-a][-g gamma][-e +/-stops] [input [output]]\n", |
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progname); |
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exit(1); |
| 146 |
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} |
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| 149 |
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quiterr(err) /* print message and exit */ |
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char *err; |
| 151 |
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{ |
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if (err != NULL) { |
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fprintf(stderr, "%s: %s\n", progname, err); |
| 154 |
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exit(1); |
| 155 |
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} |
| 156 |
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exit(0); |
| 157 |
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} |
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| 159 |
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| 160 |
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ppm2ra(getscan) /* convert color Pixmap to Radiance picture */ |
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int (*getscan)(); |
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{ |
| 163 |
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COLR *scanout; |
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int y; |
| 165 |
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/* allocate scanline */ |
| 166 |
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scanout = (COLR *)malloc(xmax*sizeof(COLR)); |
| 167 |
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if (scanout == NULL) |
| 168 |
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quiterr("out of memory in ppm2ra"); |
| 169 |
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/* convert image */ |
| 170 |
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for (y = ymax-1; y >= 0; y--) { |
| 171 |
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if ((*getscan)(scanout, xmax, stdin) < 0) |
| 172 |
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quiterr("error reading Pixmap"); |
| 173 |
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gambs_colrs(scanout, xmax); |
| 174 |
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if (bradj) |
| 175 |
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shiftcolrs(scanout, xmax, bradj); |
| 176 |
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if (fwritecolrs(scanout, xmax, stdout) < 0) |
| 177 |
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quiterr("error writing Radiance picture"); |
| 178 |
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} |
| 179 |
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/* free scanline */ |
| 180 |
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free((char *)scanout); |
| 181 |
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} |
| 182 |
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| 183 |
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| 184 |
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ra2ppm(binary) /* convert Radiance picture to Pixmap */ |
| 185 |
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int binary; |
| 186 |
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{ |
| 187 |
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COLR *scanin; |
| 188 |
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register int x; |
| 189 |
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int y; |
| 190 |
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/* allocate scanline */ |
| 191 |
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scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
| 192 |
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if (scanin == NULL) |
| 193 |
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quiterr("out of memory in ra2pr"); |
| 194 |
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/* convert image */ |
| 195 |
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for (y = ymax-1; y >= 0; y--) { |
| 196 |
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if (freadcolrs(scanin, xmax, stdin) < 0) |
| 197 |
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quiterr("error reading Radiance picture"); |
| 198 |
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if (bradj) |
| 199 |
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shiftcolrs(scanin, xmax, bradj); |
| 200 |
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colrs_gambs(scanin, xmax); |
| 201 |
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if (binary) |
| 202 |
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for (x = 0; x < xmax; x++) { |
| 203 |
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putc(scanin[x][RED], stdout); |
| 204 |
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putc(scanin[x][GRN], stdout); |
| 205 |
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putc(scanin[x][BLU], stdout); |
| 206 |
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} |
| 207 |
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else |
| 208 |
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for (x = 0; x < xmax; x++) |
| 209 |
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printf("%d %d %d\n", scanin[x][RED], |
| 210 |
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scanin[x][GRN], |
| 211 |
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scanin[x][BLU]); |
| 212 |
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if (ferror(stdout)) |
| 213 |
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quiterr("error writing Pixmap"); |
| 214 |
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} |
| 215 |
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/* free scanline */ |
| 216 |
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free((char *)scanin); |
| 217 |
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} |
| 218 |
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| 219 |
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| 220 |
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agryscan(scan, len, fp) /* get an ASCII greyscale scanline */ |
| 221 |
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register COLR *scan; |
| 222 |
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register int len; |
| 223 |
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FILE *fp; |
| 224 |
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{ |
| 225 |
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while (len-- > 0) { |
| 226 |
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scan[0][RED] = |
| 227 |
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scan[0][GRN] = |
| 228 |
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scan[0][BLU] = normval(scanint(fp)); |
| 229 |
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scan++; |
| 230 |
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} |
| 231 |
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return(0); |
| 232 |
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} |
| 233 |
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| 234 |
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| 235 |
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bgryscan(scan, len, fp) /* get a binary greyscale scanline */ |
| 236 |
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register COLR *scan; |
| 237 |
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int len; |
| 238 |
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register FILE *fp; |
| 239 |
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{ |
| 240 |
|
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register int c; |
| 241 |
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| 242 |
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while (len-- > 0) { |
| 243 |
|
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if ((c = getc(fp)) == EOF) |
| 244 |
|
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return(-1); |
| 245 |
|
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if (maxval != 255) |
| 246 |
|
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c = normval(c); |
| 247 |
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scan[0][RED] = |
| 248 |
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scan[0][GRN] = |
| 249 |
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scan[0][BLU] = c; |
| 250 |
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scan++; |
| 251 |
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} |
| 252 |
|
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return(0); |
| 253 |
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} |
| 254 |
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| 255 |
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| 256 |
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aclrscan(scan, len, fp) /* get an ASCII color scanline */ |
| 257 |
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register COLR *scan; |
| 258 |
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register int len; |
| 259 |
|
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FILE *fp; |
| 260 |
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{ |
| 261 |
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while (len-- > 0) { |
| 262 |
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scan[0][RED] = normval(scanint(fp)); |
| 263 |
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scan[0][GRN] = normval(scanint(fp)); |
| 264 |
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scan[0][BLU] = normval(scanint(fp)); |
| 265 |
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scan++; |
| 266 |
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} |
| 267 |
|
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return(0); |
| 268 |
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} |
| 269 |
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| 270 |
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| 271 |
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bclrscan(scan, len, fp) /* get a binary color scanline */ |
| 272 |
|
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register COLR *scan; |
| 273 |
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int len; |
| 274 |
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register FILE *fp; |
| 275 |
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{ |
| 276 |
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int r, g, b; |
| 277 |
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| 278 |
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while (len-- > 0) { |
| 279 |
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r = getc(fp); |
| 280 |
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g = getc(fp); |
| 281 |
|
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if ((b = getc(fp)) == EOF) |
| 282 |
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return(-1); |
| 283 |
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if (maxval == 255) { |
| 284 |
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scan[0][RED] = r; |
| 285 |
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scan[0][GRN] = g; |
| 286 |
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scan[0][BLU] = b; |
| 287 |
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} else { |
| 288 |
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scan[0][RED] = normval(r); |
| 289 |
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scan[0][GRN] = normval(g); |
| 290 |
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scan[0][BLU] = normval(b); |
| 291 |
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} |
| 292 |
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scan++; |
| 293 |
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} |
| 294 |
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return(0); |
| 295 |
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} |
| 296 |
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| 297 |
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| 298 |
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int |
| 299 |
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scanint(fp) /* scan the next positive integer value */ |
| 300 |
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register FILE *fp; |
| 301 |
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{ |
| 302 |
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register int i, c; |
| 303 |
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tryagain: |
| 304 |
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while (isspace(c = getc(fp))) |
| 305 |
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; |
| 306 |
|
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if (c == EOF) |
| 307 |
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quiterr("unexpected end of file"); |
| 308 |
|
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if (c == '#') { /* comment */ |
| 309 |
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while ((c = getc(fp)) != EOF && c != '\n') |
| 310 |
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; |
| 311 |
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goto tryagain; |
| 312 |
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} |
| 313 |
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/* should be integer */ |
| 314 |
|
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i = 0; |
| 315 |
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do { |
| 316 |
|
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if (!isdigit(c)) |
| 317 |
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quiterr("error reading integer"); |
| 318 |
|
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i = 10*i + c - '0'; |
| 319 |
|
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c = getc(fp); |
| 320 |
|
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} while (c != EOF && !isspace(c)); |
| 321 |
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return(i); |
| 322 |
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} |
| 323 |
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| 324 |
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| 325 |
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int |
| 326 |
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normval(v) /* normalize a value to [0,255] */ |
| 327 |
|
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register int v; |
| 328 |
|
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{ |
| 329 |
|
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if (v >= maxval) |
| 330 |
|
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return(255); |
| 331 |
|
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if (maxval == 255) |
| 332 |
|
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return(v); |
| 333 |
|
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return(v*255L/maxval); |
| 334 |
|
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} |
