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/* Copyright (c) 1991 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* program to convert between RADIANCE and Poskanzer Pixmaps |
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*/ |
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|
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#include <stdio.h> |
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|
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#include <math.h> |
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#include <ctype.h> |
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|
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#include "paths.h" |
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#include "platform.h" |
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#include "rtio.h" |
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#include "color.h" |
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#include "resolu.h" |
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|
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extern double atof(), pow(); |
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|
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int agryscan(), bgryscan(), aclrscan(), bclrscan(); |
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|
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#define fltv(i) (((i)+.5)/(maxval+1.)) |
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int bradj = 0; /* brightness adjustment */ |
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|
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double gamcor = 2.2; /* gamma correction value */ |
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int maxval = 255; /* maximum primary value */ |
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int xmax, ymax; |
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|
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char *progname; |
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typedef int colrscanf_t(COLR *scan, int len, FILE *fp); |
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typedef int colorscanf_t(COLOR *scan, int len, FILE *fp); |
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|
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int xmax, ymax; |
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static colrscanf_t agryscan, bgryscan, aclrscan, bclrscan; |
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static void ppm2ra(colrscanf_t *getscan); |
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static void ra2ppm(int binary, int grey); |
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|
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static colorscanf_t agryscan2, bgryscan2, aclrscan2, bclrscan2; |
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static void ppm2ra2(colorscanf_t *getscan); |
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static void ra2ppm2(int binary, int grey); |
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|
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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static int normval(unsigned int v); |
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static unsigned int scanint(FILE *fp); |
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static unsigned int intv(double v); |
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static unsigned int getby2(FILE *fp); |
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static void putby2(unsigned int w, FILE *fp); |
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static void quiterr(char *err); |
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|
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|
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int |
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main( |
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int argc, |
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char *argv[] |
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) |
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{ |
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double gamma = 2.2; |
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char inpbuf[2]; |
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int gryflag = 0; |
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int binflag = 1; |
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int reverse = 0; |
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int ptype; |
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int i; |
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|
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progname = argv[0]; |
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fixargv0(argv[0]); |
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|
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for (i = 1; i < argc; i++) |
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if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 's': |
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maxval = atoi(argv[++i]) & 0xffff; |
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break; |
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case 'b': |
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gryflag = 1; |
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break; |
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case 'g': |
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gamma = atof(argv[++i]); |
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gamcor = atof(argv[++i]); |
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break; |
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case 'e': |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
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exit(1); |
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} |
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
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fprintf(stderr, "can't open output \"%s\"\n", |
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fprintf(stderr, "%s: can't open output \"%s\"\n", |
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progname, argv[i+1]); |
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exit(1); |
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} |
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setcolrgam(gamma); |
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if (maxval < 256) |
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setcolrgam(gamcor); |
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if (reverse) { |
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/* get header */ |
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if (getc(stdin) != 'P') |
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if (read(fileno(stdin), inpbuf, 2) != 2 || inpbuf[0] != 'P') |
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quiterr("input not a Poskanzer Pixmap"); |
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ptype = getc(stdin); |
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ptype = inpbuf[1]; |
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#if defined(_WIN32) || defined(_WIN64) |
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if (ptype > 4) |
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SET_FILE_BINARY(stdin); |
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SET_FILE_BINARY(stdout); |
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#endif |
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xmax = scanint(stdin); |
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ymax = scanint(stdin); |
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maxval = scanint(stdin); |
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/* put header */ |
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newheader("RADIANCE", stdout); |
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printargs(i, argv, stdout); |
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fputformat(COLRFMT, stdout); |
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putchar('\n'); |
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fputresolu(YMAJOR|YDECR, xmax, ymax, stdout); |
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fprtresolu(xmax, ymax, stdout); |
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/* 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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if (maxval >= 256) |
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switch (ptype) { |
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case '2': |
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ppm2ra2(agryscan2); |
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break; |
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case '5': |
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ppm2ra2(bgryscan2); |
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break; |
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case '3': |
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ppm2ra2(aclrscan2); |
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break; |
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case '6': |
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ppm2ra2(bclrscan2); |
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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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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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#if defined(_WIN32) || defined(_WIN64) |
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SET_FILE_BINARY(stdin); |
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if (binflag) |
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SET_FILE_BINARY(stdout); |
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#endif |
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/* get header info. */ |
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if (checkheader(stdin, COLRFMT, NULL) < 0 || |
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fgetresolu(&xmax, &ymax, stdin) != (YMAJOR|YDECR)) |
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fgetresolu(&xmax, &ymax, stdin) < 0) |
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quiterr("bad picture format"); |
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/* write PPM header */ |
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printf("P%c\n%d %d\n%d\n", binflag ? '6' : '3', |
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printf("P%1d\n%d %d\n%u\n", (gryflag?2:3)+(binflag?3:0), |
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xmax, ymax, maxval); |
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/* convert file */ |
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ra2ppm(binflag); |
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if (maxval >= 256) |
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ra2ppm2(binflag, gryflag); |
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else |
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ra2ppm(binflag, gryflag); |
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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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"Usage: %s [-r][-a][-b][-s maxv][-g gamma][-e +/-stops] [input [output]]\n", |
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progname); |
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exit(1); |
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} |
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|
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|
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quiterr(err) /* print message and exit */ |
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char *err; |
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static void |
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quiterr( /* print message and exit */ |
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char *err |
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) |
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{ |
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if (err != NULL) { |
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fprintf(stderr, "%s: %s\n", progname, err); |
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} |
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|
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|
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ppm2ra(getscan) /* convert color Pixmap to Radiance picture */ |
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int (*getscan)(); |
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static void |
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ppm2ra( /* convert 1-byte Pixmap to Radiance picture */ |
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colrscanf_t *getscan |
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) |
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{ |
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COLR *scanout; |
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register int x; |
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int y; |
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/* allocate scanline */ |
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scanout = (COLR *)malloc(xmax*sizeof(COLR)); |
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quiterr("error writing Radiance picture"); |
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} |
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/* free scanline */ |
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< |
free((char *)scanout); |
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> |
free((void *)scanout); |
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} |
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|
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ra2ppm(binary) /* convert Radiance picture to Pixmap */ |
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int binary; |
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static void |
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ra2ppm( /* convert Radiance picture to 1-byte/sample Pixmap */ |
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int binary, |
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int grey |
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) |
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{ |
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COLR *scanin; |
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register int x; |
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/* allocate scanline */ |
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scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
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if (scanin == NULL) |
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quiterr("out of memory in ra2pr"); |
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quiterr("out of memory in ra2ppm"); |
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/* convert image */ |
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for (y = ymax-1; y >= 0; y--) { |
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if (freadcolrs(scanin, xmax, stdin) < 0) |
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quiterr("error reading Radiance picture"); |
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if (bradj) |
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shiftcolrs(scanin, xmax, bradj); |
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+ |
for (x = grey?xmax:0; x--; ) |
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scanin[x][GRN] = normbright(scanin[x]); |
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colrs_gambs(scanin, xmax); |
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< |
if (binary) |
243 |
< |
for (x = 0; x < xmax; x++) { |
244 |
< |
putc(scanin[x][RED], stdout); |
245 |
< |
putc(scanin[x][GRN], stdout); |
246 |
< |
putc(scanin[x][BLU], stdout); |
242 |
> |
if (grey) |
243 |
> |
if (binary) |
244 |
> |
for (x = 0; x < xmax; x++) |
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> |
putc(scanin[x][GRN], stdout); |
246 |
> |
else |
247 |
> |
for (x = 0; x < xmax; x++) |
248 |
> |
printf("%d\n", scanin[x][GRN]); |
249 |
> |
else |
250 |
> |
if (binary) |
251 |
> |
for (x = 0; x < xmax; x++) { |
252 |
> |
putc(scanin[x][RED], stdout); |
253 |
> |
putc(scanin[x][GRN], stdout); |
254 |
> |
putc(scanin[x][BLU], stdout); |
255 |
> |
} |
256 |
> |
else |
257 |
> |
for (x = 0; x < xmax; x++) |
258 |
> |
printf("%d %d %d\n", scanin[x][RED], |
259 |
> |
scanin[x][GRN], |
260 |
> |
scanin[x][BLU]); |
261 |
> |
if (ferror(stdout)) |
262 |
> |
quiterr("error writing Pixmap"); |
263 |
> |
} |
264 |
> |
/* free scanline */ |
265 |
> |
free((void *)scanin); |
266 |
> |
} |
267 |
> |
|
268 |
> |
|
269 |
> |
static void |
270 |
> |
ppm2ra2( /* convert 2-byte Pixmap to Radiance picture */ |
271 |
> |
colorscanf_t *getscan |
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) |
273 |
> |
{ |
274 |
> |
COLOR *scanout; |
275 |
> |
double mult; |
276 |
> |
int y; |
277 |
> |
register int x; |
278 |
> |
/* allocate scanline */ |
279 |
> |
scanout = (COLOR *)malloc(xmax*sizeof(COLOR)); |
280 |
> |
if (scanout == NULL) |
281 |
> |
quiterr("out of memory in ppm2ra2"); |
282 |
> |
if (bradj) |
283 |
> |
mult = pow(2., (double)bradj); |
284 |
> |
/* convert image */ |
285 |
> |
for (y = ymax-1; y >= 0; y--) { |
286 |
> |
if ((*getscan)(scanout, xmax, stdin) < 0) |
287 |
> |
quiterr("error reading Pixmap"); |
288 |
> |
for (x = (gamcor>1.01)|(gamcor<0.99)?xmax:0; x--; ) { |
289 |
> |
colval(scanout[x],RED) = |
290 |
> |
pow(colval(scanout[x],RED), gamcor); |
291 |
> |
colval(scanout[x],GRN) = |
292 |
> |
pow(colval(scanout[x],GRN), gamcor); |
293 |
> |
colval(scanout[x],BLU) = |
294 |
> |
pow(colval(scanout[x],BLU), gamcor); |
295 |
> |
} |
296 |
> |
for (x = bradj?xmax:0; x--; ) |
297 |
> |
scalecolor(scanout[x], mult); |
298 |
> |
if (fwritescan(scanout, xmax, stdout) < 0) |
299 |
> |
quiterr("error writing Radiance picture"); |
300 |
> |
} |
301 |
> |
/* free scanline */ |
302 |
> |
free((void *)scanout); |
303 |
> |
} |
304 |
> |
|
305 |
> |
|
306 |
> |
static void |
307 |
> |
ra2ppm2( /* convert Radiance picture to Pixmap (2-byte) */ |
308 |
> |
int binary, |
309 |
> |
int grey |
310 |
> |
) |
311 |
> |
{ |
312 |
> |
COLOR *scanin; |
313 |
> |
double mult, d; |
314 |
> |
register int x; |
315 |
> |
int y; |
316 |
> |
/* allocate scanline */ |
317 |
> |
scanin = (COLOR *)malloc(xmax*sizeof(COLOR)); |
318 |
> |
if (scanin == NULL) |
319 |
> |
quiterr("out of memory in ra2ppm2"); |
320 |
> |
if (bradj) |
321 |
> |
mult = pow(2., (double)bradj); |
322 |
> |
/* convert image */ |
323 |
> |
for (y = ymax-1; y >= 0; y--) { |
324 |
> |
if (freadscan(scanin, xmax, stdin) < 0) |
325 |
> |
quiterr("error reading Radiance picture"); |
326 |
> |
for (x = bradj?xmax:0; x--; ) |
327 |
> |
scalecolor(scanin[x], mult); |
328 |
> |
for (x = grey?xmax:0; x--; ) |
329 |
> |
colval(scanin[x],GRN) = bright(scanin[x]); |
330 |
> |
d = 1./gamcor; |
331 |
> |
for (x = (d>1.01)|(d<0.99)?xmax:0; x--; ) { |
332 |
> |
colval(scanin[x],GRN) = pow(colval(scanin[x],GRN), d); |
333 |
> |
if (!grey) { |
334 |
> |
colval(scanin[x],RED) = |
335 |
> |
pow(colval(scanin[x],RED), d); |
336 |
> |
colval(scanin[x],BLU) = |
337 |
> |
pow(colval(scanin[x],BLU), d); |
338 |
|
} |
339 |
+ |
} |
340 |
+ |
if (grey) |
341 |
+ |
if (binary) |
342 |
+ |
for (x = 0; x < xmax; x++) |
343 |
+ |
putby2(intv(colval(scanin[x],GRN)), |
344 |
+ |
stdout); |
345 |
+ |
else |
346 |
+ |
for (x = 0; x < xmax; x++) |
347 |
+ |
printf("%u\n", |
348 |
+ |
intv(colval(scanin[x],GRN))); |
349 |
|
else |
350 |
< |
for (x = 0; x < xmax; x++) |
351 |
< |
printf("%d %d %d\n", scanin[x][RED], |
352 |
< |
scanin[x][GRN], |
353 |
< |
scanin[x][BLU]); |
350 |
> |
if (binary) |
351 |
> |
for (x = 0; x < xmax; x++) { |
352 |
> |
putby2(intv(colval(scanin[x],RED)), |
353 |
> |
stdout); |
354 |
> |
putby2(intv(colval(scanin[x],GRN)), |
355 |
> |
stdout); |
356 |
> |
putby2(intv(colval(scanin[x],BLU)), |
357 |
> |
stdout); |
358 |
> |
} |
359 |
> |
else |
360 |
> |
for (x = 0; x < xmax; x++) |
361 |
> |
printf("%u %u %u\n", |
362 |
> |
intv(colval(scanin[x],RED)), |
363 |
> |
intv(colval(scanin[x],GRN)), |
364 |
> |
intv(colval(scanin[x],BLU))); |
365 |
|
if (ferror(stdout)) |
366 |
|
quiterr("error writing Pixmap"); |
367 |
|
} |
368 |
|
/* free scanline */ |
369 |
< |
free((char *)scanin); |
369 |
> |
free((void *)scanin); |
370 |
|
} |
371 |
|
|
372 |
|
|
373 |
< |
agryscan(scan, len, fp) /* get an ASCII greyscale scanline */ |
374 |
< |
register COLR *scan; |
375 |
< |
register int len; |
376 |
< |
FILE *fp; |
373 |
> |
static int |
374 |
> |
agryscan( /* get an ASCII greyscale scanline */ |
375 |
> |
register COLR *scan, |
376 |
> |
register int len, |
377 |
> |
FILE *fp |
378 |
> |
) |
379 |
|
{ |
380 |
|
while (len-- > 0) { |
381 |
|
scan[0][RED] = |
387 |
|
} |
388 |
|
|
389 |
|
|
390 |
< |
bgryscan(scan, len, fp) /* get a binary greyscale scanline */ |
391 |
< |
register COLR *scan; |
392 |
< |
int len; |
393 |
< |
register FILE *fp; |
390 |
> |
static int |
391 |
> |
bgryscan( /* get a binary greyscale scanline */ |
392 |
> |
register COLR *scan, |
393 |
> |
int len, |
394 |
> |
register FILE *fp |
395 |
> |
) |
396 |
|
{ |
397 |
|
register int c; |
398 |
|
|
410 |
|
} |
411 |
|
|
412 |
|
|
413 |
< |
aclrscan(scan, len, fp) /* get an ASCII color scanline */ |
414 |
< |
register COLR *scan; |
415 |
< |
register int len; |
416 |
< |
FILE *fp; |
413 |
> |
static int |
414 |
> |
aclrscan( /* get an ASCII color scanline */ |
415 |
> |
register COLR *scan, |
416 |
> |
register int len, |
417 |
> |
FILE *fp |
418 |
> |
) |
419 |
|
{ |
420 |
|
while (len-- > 0) { |
421 |
|
scan[0][RED] = normval(scanint(fp)); |
427 |
|
} |
428 |
|
|
429 |
|
|
430 |
< |
bclrscan(scan, len, fp) /* get a binary color scanline */ |
431 |
< |
register COLR *scan; |
432 |
< |
int len; |
433 |
< |
register FILE *fp; |
430 |
> |
static int |
431 |
> |
bclrscan( /* get a binary color scanline */ |
432 |
> |
register COLR *scan, |
433 |
> |
int len, |
434 |
> |
register FILE *fp |
435 |
> |
) |
436 |
|
{ |
437 |
|
int r, g, b; |
438 |
|
|
456 |
|
} |
457 |
|
|
458 |
|
|
459 |
< |
int |
460 |
< |
scanint(fp) /* scan the next positive integer value */ |
461 |
< |
register FILE *fp; |
459 |
> |
static int |
460 |
> |
agryscan2( /* get an ASCII greyscale scanline */ |
461 |
> |
register COLOR *scan, |
462 |
> |
register int len, |
463 |
> |
FILE *fp |
464 |
> |
) |
465 |
|
{ |
466 |
< |
register int i, c; |
466 |
> |
while (len-- > 0) { |
467 |
> |
colval(scan[0],RED) = |
468 |
> |
colval(scan[0],GRN) = |
469 |
> |
colval(scan[0],BLU) = fltv(scanint(fp)); |
470 |
> |
scan++; |
471 |
> |
} |
472 |
> |
return(0); |
473 |
> |
} |
474 |
> |
|
475 |
> |
|
476 |
> |
static int |
477 |
> |
bgryscan2( /* get a binary greyscale scanline */ |
478 |
> |
register COLOR *scan, |
479 |
> |
int len, |
480 |
> |
register FILE *fp |
481 |
> |
) |
482 |
> |
{ |
483 |
> |
register int c; |
484 |
> |
|
485 |
> |
while (len-- > 0) { |
486 |
> |
if ((c = getby2(fp)) == EOF) |
487 |
> |
return(-1); |
488 |
> |
colval(scan[0],RED) = |
489 |
> |
colval(scan[0],GRN) = |
490 |
> |
colval(scan[0],BLU) = fltv(c); |
491 |
> |
scan++; |
492 |
> |
} |
493 |
> |
return(0); |
494 |
> |
} |
495 |
> |
|
496 |
> |
|
497 |
> |
static int |
498 |
> |
aclrscan2( /* get an ASCII color scanline */ |
499 |
> |
register COLOR *scan, |
500 |
> |
register int len, |
501 |
> |
FILE *fp |
502 |
> |
) |
503 |
> |
{ |
504 |
> |
while (len-- > 0) { |
505 |
> |
colval(scan[0],RED) = fltv(scanint(fp)); |
506 |
> |
colval(scan[0],GRN) = fltv(scanint(fp)); |
507 |
> |
colval(scan[0],BLU) = fltv(scanint(fp)); |
508 |
> |
scan++; |
509 |
> |
} |
510 |
> |
return(0); |
511 |
> |
} |
512 |
> |
|
513 |
> |
|
514 |
> |
static int |
515 |
> |
bclrscan2( /* get a binary color scanline */ |
516 |
> |
register COLOR *scan, |
517 |
> |
int len, |
518 |
> |
register FILE *fp |
519 |
> |
) |
520 |
> |
{ |
521 |
> |
int r, g, b; |
522 |
> |
|
523 |
> |
while (len-- > 0) { |
524 |
> |
r = getby2(fp); |
525 |
> |
g = getby2(fp); |
526 |
> |
if ((b = getby2(fp)) == EOF) |
527 |
> |
return(-1); |
528 |
> |
scan[0][RED] = fltv(r); |
529 |
> |
scan[0][GRN] = fltv(g); |
530 |
> |
scan[0][BLU] = fltv(b); |
531 |
> |
scan++; |
532 |
> |
} |
533 |
> |
return(0); |
534 |
> |
} |
535 |
> |
|
536 |
> |
|
537 |
> |
static unsigned int |
538 |
> |
scanint( /* scan the next positive integer value */ |
539 |
> |
register FILE *fp |
540 |
> |
) |
541 |
> |
{ |
542 |
> |
register int c; |
543 |
> |
register unsigned int i; |
544 |
|
tryagain: |
545 |
|
while (isspace(c = getc(fp))) |
546 |
|
; |
563 |
|
} |
564 |
|
|
565 |
|
|
566 |
< |
int |
567 |
< |
normval(v) /* normalize a value to [0,255] */ |
568 |
< |
register int v; |
566 |
> |
static int |
567 |
> |
normval( /* normalize a value to [0,255] */ |
568 |
> |
register unsigned int v |
569 |
> |
) |
570 |
|
{ |
571 |
|
if (v >= maxval) |
572 |
|
return(255); |
573 |
|
if (maxval == 255) |
574 |
|
return(v); |
575 |
|
return(v*255L/maxval); |
576 |
+ |
} |
577 |
+ |
|
578 |
+ |
|
579 |
+ |
static unsigned int |
580 |
+ |
getby2( /* return 2-byte quantity from fp */ |
581 |
+ |
register FILE *fp |
582 |
+ |
) |
583 |
+ |
{ |
584 |
+ |
register int lowerb, upperb; |
585 |
+ |
|
586 |
+ |
upperb = getc(fp); |
587 |
+ |
lowerb = getc(fp); |
588 |
+ |
if (lowerb == EOF) |
589 |
+ |
return(EOF); |
590 |
+ |
return(upperb<<8 | lowerb); |
591 |
+ |
} |
592 |
+ |
|
593 |
+ |
|
594 |
+ |
static void |
595 |
+ |
putby2( /* put 2-byte quantity to fp */ |
596 |
+ |
register unsigned int w, |
597 |
+ |
register FILE *fp |
598 |
+ |
) |
599 |
+ |
{ |
600 |
+ |
putc(w>>8 & 0xff, fp); |
601 |
+ |
putc(w & 0xff, fp); |
602 |
+ |
if (ferror(fp)) { |
603 |
+ |
fprintf(stderr, "%s: write error on PPM output\n", progname); |
604 |
+ |
exit(1); |
605 |
+ |
} |
606 |
+ |
} |
607 |
+ |
|
608 |
+ |
|
609 |
+ |
static unsigned int |
610 |
+ |
intv( /* return integer quantity for v */ |
611 |
+ |
register double v |
612 |
+ |
) |
613 |
+ |
{ |
614 |
+ |
if (v >= 0.99999) |
615 |
+ |
return(maxval); |
616 |
+ |
if (v <= 0.) |
617 |
+ |
return(0); |
618 |
+ |
return((int)(v*(maxval+1))); |
619 |
|
} |