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/* Copyright (c) 1991 Regents of the University of California */ |
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|
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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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#include <time.h> |
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|
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#include "platform.h" |
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#include "color.h" |
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|
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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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|
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char *progname; |
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|
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int xmax, ymax; |
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|
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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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main(argc, argv) |
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int argc; |
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char *argv[]; |
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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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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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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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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) < 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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|
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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) |
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< |
for (x = 0; x < xmax; x++) { |
246 |
< |
putc(scanin[x][RED], stdout); |
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< |
putc(scanin[x][GRN], stdout); |
248 |
< |
putc(scanin[x][BLU], stdout); |
244 |
> |
if (grey) |
245 |
> |
if (binary) |
246 |
> |
for (x = 0; x < xmax; x++) |
247 |
> |
putc(scanin[x][GRN], stdout); |
248 |
> |
else |
249 |
> |
for (x = 0; x < xmax; x++) |
250 |
> |
printf("%d\n", scanin[x][GRN]); |
251 |
> |
else |
252 |
> |
if (binary) |
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> |
for (x = 0; x < xmax; x++) { |
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> |
putc(scanin[x][RED], stdout); |
255 |
> |
putc(scanin[x][GRN], stdout); |
256 |
> |
putc(scanin[x][BLU], stdout); |
257 |
> |
} |
258 |
> |
else |
259 |
> |
for (x = 0; x < xmax; x++) |
260 |
> |
printf("%d %d %d\n", scanin[x][RED], |
261 |
> |
scanin[x][GRN], |
262 |
> |
scanin[x][BLU]); |
263 |
> |
if (ferror(stdout)) |
264 |
> |
quiterr("error writing Pixmap"); |
265 |
> |
} |
266 |
> |
/* free scanline */ |
267 |
> |
free((void *)scanin); |
268 |
> |
} |
269 |
> |
|
270 |
> |
|
271 |
> |
static void |
272 |
> |
ppm2ra2( /* convert 2-byte Pixmap to Radiance picture */ |
273 |
> |
colorscanf_t *getscan |
274 |
> |
) |
275 |
> |
{ |
276 |
> |
COLOR *scanout; |
277 |
> |
double mult; |
278 |
> |
int y; |
279 |
> |
register int x; |
280 |
> |
/* allocate scanline */ |
281 |
> |
scanout = (COLOR *)malloc(xmax*sizeof(COLOR)); |
282 |
> |
if (scanout == NULL) |
283 |
> |
quiterr("out of memory in ppm2ra2"); |
284 |
> |
if (bradj) |
285 |
> |
mult = pow(2., (double)bradj); |
286 |
> |
/* convert image */ |
287 |
> |
for (y = ymax-1; y >= 0; y--) { |
288 |
> |
if ((*getscan)(scanout, xmax, stdin) < 0) |
289 |
> |
quiterr("error reading Pixmap"); |
290 |
> |
for (x = (gamcor>1.01)|(gamcor<0.99)?xmax:0; x--; ) { |
291 |
> |
colval(scanout[x],RED) = |
292 |
> |
pow(colval(scanout[x],RED), gamcor); |
293 |
> |
colval(scanout[x],GRN) = |
294 |
> |
pow(colval(scanout[x],GRN), gamcor); |
295 |
> |
colval(scanout[x],BLU) = |
296 |
> |
pow(colval(scanout[x],BLU), gamcor); |
297 |
> |
} |
298 |
> |
for (x = bradj?xmax:0; x--; ) |
299 |
> |
scalecolor(scanout[x], mult); |
300 |
> |
if (fwritescan(scanout, xmax, stdout) < 0) |
301 |
> |
quiterr("error writing Radiance picture"); |
302 |
> |
} |
303 |
> |
/* free scanline */ |
304 |
> |
free((void *)scanout); |
305 |
> |
} |
306 |
> |
|
307 |
> |
|
308 |
> |
static void |
309 |
> |
ra2ppm2( /* convert Radiance picture to Pixmap (2-byte) */ |
310 |
> |
int binary, |
311 |
> |
int grey |
312 |
> |
) |
313 |
> |
{ |
314 |
> |
COLOR *scanin; |
315 |
> |
double mult, d; |
316 |
> |
register int x; |
317 |
> |
int y; |
318 |
> |
/* allocate scanline */ |
319 |
> |
scanin = (COLOR *)malloc(xmax*sizeof(COLOR)); |
320 |
> |
if (scanin == NULL) |
321 |
> |
quiterr("out of memory in ra2ppm2"); |
322 |
> |
if (bradj) |
323 |
> |
mult = pow(2., (double)bradj); |
324 |
> |
/* convert image */ |
325 |
> |
for (y = ymax-1; y >= 0; y--) { |
326 |
> |
if (freadscan(scanin, xmax, stdin) < 0) |
327 |
> |
quiterr("error reading Radiance picture"); |
328 |
> |
for (x = bradj?xmax:0; x--; ) |
329 |
> |
scalecolor(scanin[x], mult); |
330 |
> |
for (x = grey?xmax:0; x--; ) |
331 |
> |
colval(scanin[x],GRN) = bright(scanin[x]); |
332 |
> |
d = 1./gamcor; |
333 |
> |
for (x = (d>1.01)|(d<0.99)?xmax:0; x--; ) { |
334 |
> |
colval(scanin[x],GRN) = pow(colval(scanin[x],GRN), d); |
335 |
> |
if (!grey) { |
336 |
> |
colval(scanin[x],RED) = |
337 |
> |
pow(colval(scanin[x],RED), d); |
338 |
> |
colval(scanin[x],BLU) = |
339 |
> |
pow(colval(scanin[x],BLU), d); |
340 |
|
} |
341 |
+ |
} |
342 |
+ |
if (grey) |
343 |
+ |
if (binary) |
344 |
+ |
for (x = 0; x < xmax; x++) |
345 |
+ |
putby2(intv(colval(scanin[x],GRN)), |
346 |
+ |
stdout); |
347 |
+ |
else |
348 |
+ |
for (x = 0; x < xmax; x++) |
349 |
+ |
printf("%u\n", |
350 |
+ |
intv(colval(scanin[x],GRN))); |
351 |
|
else |
352 |
< |
for (x = 0; x < xmax; x++) |
353 |
< |
printf("%d %d %d\n", scanin[x][RED], |
354 |
< |
scanin[x][GRN], |
355 |
< |
scanin[x][BLU]); |
352 |
> |
if (binary) |
353 |
> |
for (x = 0; x < xmax; x++) { |
354 |
> |
putby2(intv(colval(scanin[x],RED)), |
355 |
> |
stdout); |
356 |
> |
putby2(intv(colval(scanin[x],GRN)), |
357 |
> |
stdout); |
358 |
> |
putby2(intv(colval(scanin[x],BLU)), |
359 |
> |
stdout); |
360 |
> |
} |
361 |
> |
else |
362 |
> |
for (x = 0; x < xmax; x++) |
363 |
> |
printf("%u %u %u\n", |
364 |
> |
intv(colval(scanin[x],RED)), |
365 |
> |
intv(colval(scanin[x],GRN)), |
366 |
> |
intv(colval(scanin[x],BLU))); |
367 |
|
if (ferror(stdout)) |
368 |
|
quiterr("error writing Pixmap"); |
369 |
|
} |
370 |
|
/* free scanline */ |
371 |
< |
free((char *)scanin); |
371 |
> |
free((void *)scanin); |
372 |
|
} |
373 |
|
|
374 |
|
|
375 |
< |
agryscan(scan, len, fp) /* get an ASCII greyscale scanline */ |
376 |
< |
register COLR *scan; |
377 |
< |
register int len; |
378 |
< |
FILE *fp; |
375 |
> |
static int |
376 |
> |
agryscan( /* get an ASCII greyscale scanline */ |
377 |
> |
register COLR *scan, |
378 |
> |
register int len, |
379 |
> |
FILE *fp |
380 |
> |
) |
381 |
|
{ |
382 |
|
while (len-- > 0) { |
383 |
|
scan[0][RED] = |
389 |
|
} |
390 |
|
|
391 |
|
|
392 |
< |
bgryscan(scan, len, fp) /* get a binary greyscale scanline */ |
393 |
< |
register COLR *scan; |
394 |
< |
int len; |
395 |
< |
register FILE *fp; |
392 |
> |
static int |
393 |
> |
bgryscan( /* get a binary greyscale scanline */ |
394 |
> |
register COLR *scan, |
395 |
> |
int len, |
396 |
> |
register FILE *fp |
397 |
> |
) |
398 |
|
{ |
399 |
|
register int c; |
400 |
|
|
412 |
|
} |
413 |
|
|
414 |
|
|
415 |
< |
aclrscan(scan, len, fp) /* get an ASCII color scanline */ |
416 |
< |
register COLR *scan; |
417 |
< |
register int len; |
418 |
< |
FILE *fp; |
415 |
> |
static int |
416 |
> |
aclrscan( /* get an ASCII color scanline */ |
417 |
> |
register COLR *scan, |
418 |
> |
register int len, |
419 |
> |
FILE *fp |
420 |
> |
) |
421 |
|
{ |
422 |
|
while (len-- > 0) { |
423 |
|
scan[0][RED] = normval(scanint(fp)); |
429 |
|
} |
430 |
|
|
431 |
|
|
432 |
< |
bclrscan(scan, len, fp) /* get a binary color scanline */ |
433 |
< |
register COLR *scan; |
434 |
< |
int len; |
435 |
< |
register FILE *fp; |
432 |
> |
static int |
433 |
> |
bclrscan( /* get a binary color scanline */ |
434 |
> |
register COLR *scan, |
435 |
> |
int len, |
436 |
> |
register FILE *fp |
437 |
> |
) |
438 |
|
{ |
439 |
|
int r, g, b; |
440 |
|
|
458 |
|
} |
459 |
|
|
460 |
|
|
461 |
< |
int |
462 |
< |
scanint(fp) /* scan the next positive integer value */ |
463 |
< |
register FILE *fp; |
461 |
> |
static int |
462 |
> |
agryscan2( /* get an ASCII greyscale scanline */ |
463 |
> |
register COLOR *scan, |
464 |
> |
register int len, |
465 |
> |
FILE *fp |
466 |
> |
) |
467 |
|
{ |
468 |
< |
register int i, c; |
468 |
> |
while (len-- > 0) { |
469 |
> |
colval(scan[0],RED) = |
470 |
> |
colval(scan[0],GRN) = |
471 |
> |
colval(scan[0],BLU) = fltv(scanint(fp)); |
472 |
> |
scan++; |
473 |
> |
} |
474 |
> |
return(0); |
475 |
> |
} |
476 |
> |
|
477 |
> |
|
478 |
> |
static int |
479 |
> |
bgryscan2( /* get a binary greyscale scanline */ |
480 |
> |
register COLOR *scan, |
481 |
> |
int len, |
482 |
> |
register FILE *fp |
483 |
> |
) |
484 |
> |
{ |
485 |
> |
register int c; |
486 |
> |
|
487 |
> |
while (len-- > 0) { |
488 |
> |
if ((c = getby2(fp)) == EOF) |
489 |
> |
return(-1); |
490 |
> |
colval(scan[0],RED) = |
491 |
> |
colval(scan[0],GRN) = |
492 |
> |
colval(scan[0],BLU) = fltv(c); |
493 |
> |
scan++; |
494 |
> |
} |
495 |
> |
return(0); |
496 |
> |
} |
497 |
> |
|
498 |
> |
|
499 |
> |
static int |
500 |
> |
aclrscan2( /* get an ASCII color scanline */ |
501 |
> |
register COLOR *scan, |
502 |
> |
register int len, |
503 |
> |
FILE *fp |
504 |
> |
) |
505 |
> |
{ |
506 |
> |
while (len-- > 0) { |
507 |
> |
colval(scan[0],RED) = fltv(scanint(fp)); |
508 |
> |
colval(scan[0],GRN) = fltv(scanint(fp)); |
509 |
> |
colval(scan[0],BLU) = fltv(scanint(fp)); |
510 |
> |
scan++; |
511 |
> |
} |
512 |
> |
return(0); |
513 |
> |
} |
514 |
> |
|
515 |
> |
|
516 |
> |
static int |
517 |
> |
bclrscan2( /* get a binary color scanline */ |
518 |
> |
register COLOR *scan, |
519 |
> |
int len, |
520 |
> |
register FILE *fp |
521 |
> |
) |
522 |
> |
{ |
523 |
> |
int r, g, b; |
524 |
> |
|
525 |
> |
while (len-- > 0) { |
526 |
> |
r = getby2(fp); |
527 |
> |
g = getby2(fp); |
528 |
> |
if ((b = getby2(fp)) == EOF) |
529 |
> |
return(-1); |
530 |
> |
scan[0][RED] = fltv(r); |
531 |
> |
scan[0][GRN] = fltv(g); |
532 |
> |
scan[0][BLU] = fltv(b); |
533 |
> |
scan++; |
534 |
> |
} |
535 |
> |
return(0); |
536 |
> |
} |
537 |
> |
|
538 |
> |
|
539 |
> |
static unsigned int |
540 |
> |
scanint( /* scan the next positive integer value */ |
541 |
> |
register FILE *fp |
542 |
> |
) |
543 |
> |
{ |
544 |
> |
register int c; |
545 |
> |
register unsigned int i; |
546 |
|
tryagain: |
547 |
|
while (isspace(c = getc(fp))) |
548 |
|
; |
565 |
|
} |
566 |
|
|
567 |
|
|
568 |
< |
int |
569 |
< |
normval(v) /* normalize a value to [0,255] */ |
570 |
< |
register int v; |
568 |
> |
static int |
569 |
> |
normval( /* normalize a value to [0,255] */ |
570 |
> |
register unsigned int v |
571 |
> |
) |
572 |
|
{ |
573 |
|
if (v >= maxval) |
574 |
|
return(255); |
575 |
|
if (maxval == 255) |
576 |
|
return(v); |
577 |
|
return(v*255L/maxval); |
578 |
+ |
} |
579 |
+ |
|
580 |
+ |
|
581 |
+ |
static unsigned int |
582 |
+ |
getby2( /* return 2-byte quantity from fp */ |
583 |
+ |
register FILE *fp |
584 |
+ |
) |
585 |
+ |
{ |
586 |
+ |
register int lowerb, upperb; |
587 |
+ |
|
588 |
+ |
upperb = getc(fp); |
589 |
+ |
lowerb = getc(fp); |
590 |
+ |
if (lowerb == EOF) |
591 |
+ |
return(EOF); |
592 |
+ |
return(upperb<<8 | lowerb); |
593 |
+ |
} |
594 |
+ |
|
595 |
+ |
|
596 |
+ |
static void |
597 |
+ |
putby2( /* put 2-byte quantity to fp */ |
598 |
+ |
register unsigned int w, |
599 |
+ |
register FILE *fp |
600 |
+ |
) |
601 |
+ |
{ |
602 |
+ |
putc(w>>8 & 0xff, fp); |
603 |
+ |
putc(w & 0xff, fp); |
604 |
+ |
if (ferror(fp)) { |
605 |
+ |
fprintf(stderr, "%s: write error on PPM output\n", progname); |
606 |
+ |
exit(1); |
607 |
+ |
} |
608 |
+ |
} |
609 |
+ |
|
610 |
+ |
|
611 |
+ |
static unsigned int |
612 |
+ |
intv( /* return integer quantity for v */ |
613 |
+ |
register double v |
614 |
+ |
) |
615 |
+ |
{ |
616 |
+ |
if (v >= 0.99999) |
617 |
+ |
return(maxval); |
618 |
+ |
if (v <= 0.) |
619 |
+ |
return(0); |
620 |
+ |
return((int)(v*(maxval+1))); |
621 |
|
} |