src/px/pvalue.c

/* Copyright (c) 1992 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  pvalue.c - program to print pixel values.
 *
 *     4/23/86
 */

#include  "standard.h"

#include  "color.h"

#include  "resolu.h"

#define  min(a,b)               ((a)<(b)?(a):(b))

RESOLU  picres;                 /* resolution of picture */

int  uniq = 0;                  /* print only unique values? */

int  doexposure = 0;            /* exposure change? (>100 to print) */

int  dataonly = 0;              /* data only format? */

int  brightonly = 0;            /* only brightness values? */

int  reverse = 0;               /* reverse conversion? */

int  format = 'a';              /* input/output format */
char  *fmtid = "ascii";         /* format identifier for header */

int  header = 1;                /* do header? */

int  resolution = 1;            /* put/get resolution string? */

int  original = 0;              /* convert to original values? */

int  wrongformat = 0;           /* wrong input format? */

double  gamcor = 1.0;           /* gamma correction */

int  ord[3] = {RED, GRN, BLU};  /* RGB ordering */
int  rord[4];                   /* reverse ordering */

COLOR  exposure = WHTCOLOR;

char  *progname;

FILE  *fin;

int  (*getval)(), (*putval)();


main(argc, argv)
int  argc;
char  **argv;
{
        extern int  checkhead();
        double  d, expval = 1.0;
        int  i;

        progname = argv[0];

        for (i = 1; i < argc; i++)
                if (argv[i][0] == '-' || argv[i][0] == '+')
                        switch (argv[i][1]) {
                        case 'h':               /* header */
                                header = argv[i][0] == '+';
                                break;
                        case 'H':               /* resolution string */
                                resolution = argv[i][0] == '+';
                                break;
                        case 'u':               /* unique values */
                                uniq = argv[i][0] == '-';
                                break;
                        case 'o':               /* original values */
                                original = argv[i][0] == '-';
                                break;
                        case 'g':               /* gamma correction */
                                gamcor = atof(argv[i+1]);
                                if (argv[i][0] == '+')
                                        gamcor = 1.0/gamcor;
                                i++;
                                break;
                        case 'e':               /* exposure correction */
                                d = atof(argv[i+1]);
                                if (argv[i+1][0] == '-' || argv[i+1][0] == '+')
                                        d = pow(2.0, d);
                                if (argv[i][0] == '-')
                                        doexposure = 100;
                                scalecolor(exposure, d);
                                expval *= d;
                                doexposure++;
                                i++;
                                break;
                        case 'R':               /* reverse byte sequence */
                                if (argv[i][0] == '-') {
                                        ord[0]=BLU; ord[1]=GRN; ord[2]=RED;
                                } else {
                                        ord[0]=RED; ord[1]=GRN; ord[2]=BLU;
                                }
                                break;
                        case 'r':               /* reverse conversion */
                                reverse = argv[i][0] == '-';
                                break;
                        case 'b':               /* brightness values */
                                brightonly = argv[i][0] == '-';
                                break;
                        case 'd':               /* data only (no indices) */
                                dataonly = argv[i][0] == '-';
                                switch (argv[i][2]) {
                                case '\0':
                                case 'a':               /* ascii */
                                        format = 'a';
                                        fmtid = "ascii";
                                        break;
                                case 'i':               /* integer */
                                        format = 'i';
                                        fmtid = "ascii";
                                        break;
                                case 'b':               /* byte */
                                        dataonly = 1;
                                        format = 'b';
                                        fmtid = "byte";
                                        break;
                                case 'f':               /* float */
                                        dataonly = 1;
                                        format = 'f';
                                        fmtid = "float";
                                        break;
                                case 'd':               /* double */
                                        dataonly = 1;
                                        format = 'd';
                                        fmtid = "double";
                                        break;
                                default:
                                        goto unkopt;
                                }
                                break;
                        case 'x':               /* x resolution */
                        case 'X':               /* x resolution */
                                resolution = 0;
                                if (argv[i][0] == '-')
                                        picres.or |= XDECR;
                                picres.xr = atoi(argv[++i]);
                                break;
                        case 'y':               /* y resolution */
                        case 'Y':               /* y resolution */
                                resolution = 0;
                                if (argv[i][0] == '-')
                                        picres.or |= YDECR;
                                if (picres.xr == 0)
                                        picres.or |= YMAJOR;
                                picres.yr = atoi(argv[++i]);
                                break;
                        default:
unkopt:
                                fprintf(stderr, "%s: unknown option: %s\n",
                                                progname, argv[i]);
                                quit(1);
                                break;
                        }
                else
                        break;
                                        /* recognize special formats */
        if (dataonly && format == 'b')
                if (brightonly)
                        fmtid = "8-bit_grey";
                else
                        fmtid = "24-bit_rgb";
                                        /* assign reverse ordering */
        rord[ord[0]] = 0;
        rord[ord[1]] = 1;
        rord[ord[2]] = 2;
                                        /* get input */
        if (i == argc) {
                fin = stdin;
        } else if (i == argc-1) {
                if ((fin = fopen(argv[i], "r")) == NULL) {
                        fprintf(stderr, "%s: can't open file \"%s\"\n",
                                                progname, argv[i]);
                        quit(1);
                }
        } else {
                fprintf(stderr, "%s: bad # file arguments\n", progname);
                quit(1);
        }

        set_io();

        if (reverse) {
#ifdef MSDOS
                setmode(fileno(stdout), O_BINARY);
                if (format != 'a' && format != 'i')
                        setmode(fileno(fin), O_BINARY);
#endif
                                        /* get header */
                if (header && checkheader(fin, fmtid, stdout) < 0) {
                        fprintf(stderr, "%s: wrong input format\n", progname);
                        quit(1);
                }
                                        /* get resolution */
                if ((resolution && !fgetsresolu(&picres, fin)) ||
                                picres.xr <= 0 || picres.yr <= 0) {
                        fprintf(stderr, "%s: missing resolution\n", progname);
                        quit(1);
                }
                                                /* add to header */
                printargs(i, argv, stdout);
                if (doexposure > 100)
                        fputexpos(expval, stdout);
                fputformat(COLRFMT, stdout);
                putchar('\n');
                fputsresolu(&picres, stdout);   /* always put resolution */
                valtopix();
        } else {
#ifdef MSDOS
                setmode(fileno(fin), O_BINARY);
                if (format != 'a' && format != 'i')
                        setmode(fileno(stdout), O_BINARY);
#endif
                                                /* get header */
                getheader(fin, checkhead, NULL);
                if (wrongformat) {
                        fprintf(stderr, "%s: input not a Radiance picture\n",
                                        progname);
                        quit(1);
                }
                if (!fgetsresolu(&picres, fin)) {
                        fprintf(stderr, "%s: missing resolution\n", progname);
                        quit(1);
                }
                if (header) {
                        printargs(i, argv, stdout);
                        if (doexposure > 100)
                                fputexpos(expval, stdout);
                        fputformat(fmtid, stdout);
                        putchar('\n');
                }
                if (resolution)                 /* put resolution */
                        fputsresolu(&picres, stdout);
                pixtoval();
        }

        quit(0);
}


checkhead(line)                         /* deal with line from header */
char  *line;
{
        char    fmt[32];
        double  d;
        COLOR   ctmp;

        if (isformat(line)) {
                formatval(fmt, line);
                wrongformat = strcmp(fmt, COLRFMT);
        } else if (original && isexpos(line)) {
                d = 1.0/exposval(line);
                scalecolor(exposure, d);
                doexposure++;
        } else if (original && iscolcor(line)) {
                colcorval(ctmp, line);
                setcolor(exposure, colval(exposure,RED)/colval(ctmp,RED),
                                colval(exposure,GRN)/colval(ctmp,GRN),
                                colval(exposure,BLU)/colval(ctmp,BLU));
                doexposure++;
        } else if (header)
                fputs(line, stdout);
}


pixtoval()                              /* convert picture to values */
{
        register COLOR  *scanln;
        int  dogamma;
        COLOR  lastc;
        FLOAT  hv[2];
        int  y;
        register int  x;

        scanln = (COLOR *)malloc(scanlen(&picres)*sizeof(COLOR));
        if (scanln == NULL) {
                fprintf(stderr, "%s: out of memory\n", progname);
                quit(1);
        }
        dogamma = gamcor < .95 || gamcor > 1.05;
        setcolor(lastc, 0.0, 0.0, 0.0);
        for (y = 0; y < numscans(&picres); y++) {
                if (freadscan(scanln, scanlen(&picres), fin) < 0) {
                        fprintf(stderr, "%s: read error\n", progname);
                        quit(1);
                }
                for (x = 0; x < scanlen(&picres); x++) {
                        if (uniq)
                                if (    colval(scanln[x],RED) ==
                                                colval(lastc,RED) &&
                                        colval(scanln[x],GRN) ==
                                                colval(lastc,GRN) &&
                                        colval(scanln[x],BLU) ==
                                                colval(lastc,BLU)       )
                                        continue;
                                else
                                        copycolor(lastc, scanln[x]);
                        if (doexposure)
                                multcolor(scanln[x], exposure);
                        if (dogamma)
                                setcolor(scanln[x],
                                pow(colval(scanln[x],RED), 1.0/gamcor),
                                pow(colval(scanln[x],GRN), 1.0/gamcor),
                                pow(colval(scanln[x],BLU), 1.0/gamcor));
                        if (!dataonly) {
                                pix2loc(hv, &picres, x, y);
                                printf("%7d %7d ", (int)(hv[0]*picres.xr),
                                                (int)(hv[1]*picres.yr));
                        }
                        if ((*putval)(scanln[x], stdout) < 0) {
                                fprintf(stderr, "%s: write error\n", progname);
                                quit(1);
                        }
                }
        }
        free((char *)scanln);
}


valtopix()                      /* convert values to a pixel file */
{
        int  dogamma;
        register COLOR  *scanln;
        int  y;
        register int  x;

        scanln = (COLOR *)malloc(scanlen(&picres)*sizeof(COLOR));
        if (scanln == NULL) {
                fprintf(stderr, "%s: out of memory\n", progname);
                quit(1);
        }
        dogamma = gamcor < .95 || gamcor > 1.05;
        for (y = 0; y < numscans(&picres); y++) {
                for (x = 0; x < scanlen(&picres); x++) {
                        if (!dataonly)
                                fscanf(fin, "%*d %*d");
                        if ((*getval)(scanln[x], fin) < 0) {
                                fprintf(stderr, "%s: read error\n", progname);
                                quit(1);
                        }
                        if (dogamma)
                                setcolor(scanln[x],
                                        pow(colval(scanln[x],RED), gamcor),
                                        pow(colval(scanln[x],GRN), gamcor),
                                        pow(colval(scanln[x],BLU), gamcor));
                        if (doexposure)
                                multcolor(scanln[x], exposure);
                }
                if (fwritescan(scanln, scanlen(&picres), stdout) < 0) {
                        fprintf(stderr, "%s: write error\n", progname);
                        quit(1);
                }
        }
        free((char *)scanln);
}


quit(code)
int  code;
{
        exit(code);
}


getcascii(col, fp)              /* get an ascii color value from fp */
COLOR  col;
FILE  *fp;
{
        double  vd[3];

        if (fscanf(fp, "%lf %lf %lf", &vd[0], &vd[1], &vd[2]) != 3)
                return(-1);
        setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
        return(0);
}


getcdouble(col, fp)             /* get a double color value from fp */
COLOR  col;
FILE  *fp;
{
        double  vd[3];

        if (fread((char *)vd, sizeof(double), 3, fp) != 3)
                return(-1);
        setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
        return(0);
}


getcfloat(col, fp)              /* get a float color value from fp */
COLOR  col;
FILE  *fp;
{
        float  vf[3];

        if (fread((char *)vf, sizeof(float), 3, fp) != 3)
                return(-1);
        setcolor(col, vf[rord[RED]], vf[rord[GRN]], vf[rord[BLU]]);
        return(0);
}


getcint(col, fp)                /* get an int color value from fp */
COLOR  col;
FILE  *fp;
{
        int  vi[3];

        if (fscanf(fp, "%d %d %d", &vi[0], &vi[1], &vi[2]) != 3)
                return(-1);
        setcolor(col, (vi[rord[RED]]+.5)/256.,
                        (vi[rord[GRN]]+.5)/256., (vi[rord[BLU]]+.5)/256.);
        return(0);
}


getcbyte(col, fp)               /* get a byte color value from fp */
COLOR  col;
FILE  *fp;
{
        BYTE  vb[3];

        if (fread((char *)vb, sizeof(BYTE), 3, fp) != 3)
                return(-1);
        setcolor(col, (vb[rord[RED]]+.5)/256.,
                        (vb[rord[GRN]]+.5)/256., (vb[rord[BLU]]+.5)/256.);
        return(0);
}


getbascii(col, fp)              /* get an ascii brightness value from fp */
COLOR  col;
FILE  *fp;
{
        double  vd;

        if (fscanf(fp, "%lf", &vd) != 1)
                return(-1);
        setcolor(col, vd, vd, vd);
        return(0);
}


getbdouble(col, fp)             /* get a double brightness value from fp */
COLOR  col;
FILE  *fp;
{
        double  vd;

        if (fread((char *)&vd, sizeof(double), 1, fp) != 1)
                return(-1);
        setcolor(col, vd, vd, vd);
        return(0);
}


getbfloat(col, fp)              /* get a float brightness value from fp */
COLOR  col;
FILE  *fp;
{
        float  vf;

        if (fread((char *)&vf, sizeof(float), 1, fp) != 1)
                return(-1);
        setcolor(col, vf, vf, vf);
        return(0);
}


getbint(col, fp)                /* get an int brightness value from fp */
COLOR  col;
FILE  *fp;
{
        int  vi;
        double  d;

        if (fscanf(fp, "%d", &vi) != 1)
                return(-1);
        d = (vi+.5)/256.;
        setcolor(col, d, d, d);
        return(0);
}


getbbyte(col, fp)               /* get a byte brightness value from fp */
COLOR  col;
FILE  *fp;
{
        BYTE  vb;
        double  d;

        if (fread((char *)&vb, sizeof(BYTE), 1, fp) != 1)
                return(-1);
        d = (vb+.5)/256.;
        setcolor(col, d, d, d);
        return(0);
}


putcascii(col, fp)                      /* put an ascii color to fp */
COLOR  col;
FILE  *fp;
{
        fprintf(fp, "%15.3e %15.3e %15.3e\n",
                        colval(col,ord[0]),
                        colval(col,ord[1]),
                        colval(col,ord[2]));

        return(ferror(fp) ? -1 : 0);
}


putcfloat(col, fp)                      /* put a float color to fp */
COLOR  col;
FILE  *fp;
{
        float  vf[3];

        vf[0] = colval(col,ord[0]);
        vf[1] = colval(col,ord[1]);
        vf[2] = colval(col,ord[2]);
        fwrite((char *)vf, sizeof(float), 3, fp);

        return(ferror(fp) ? -1 : 0);
}


putcdouble(col, fp)                     /* put a double color to fp */
COLOR  col;
FILE  *fp;
{
        double  vd[3];

        vd[0] = colval(col,ord[0]);
        vd[1] = colval(col,ord[1]);
        vd[2] = colval(col,ord[2]);
        fwrite((char *)vd, sizeof(double), 3, fp);

        return(ferror(fp) ? -1 : 0);
}


putcint(col, fp)                        /* put an int color to fp */
COLOR  col;
FILE  *fp;
{
        fprintf(fp, "%d %d %d\n",
                        (int)(colval(col,ord[0])*256.),
                        (int)(colval(col,ord[1])*256.),
                        (int)(colval(col,ord[2])*256.));

        return(ferror(fp) ? -1 : 0);
}


putcbyte(col, fp)                       /* put a byte color to fp */
COLOR  col;
FILE  *fp;
{
        register int  i;
        BYTE  vb[3];

        i = colval(col,ord[0])*256.;
        vb[0] = min(i,255);
        i = colval(col,ord[1])*256.;
        vb[1] = min(i,255);
        i = colval(col,ord[2])*256.;
        vb[2] = min(i,255);
        fwrite((char *)vb, sizeof(BYTE), 3, fp);

        return(ferror(fp) ? -1 : 0);
}


putbascii(col, fp)                      /* put an ascii brightness to fp */
COLOR  col;
FILE  *fp;
{
        fprintf(fp, "%15.3e\n", bright(col));

        return(ferror(fp) ? -1 : 0);
}


putbfloat(col, fp)                      /* put a float brightness to fp */
COLOR  col;
FILE  *fp;
{
        float  vf;

        vf = bright(col);
        fwrite((char *)&vf, sizeof(float), 1, fp);

        return(ferror(fp) ? -1 : 0);
}


putbdouble(col, fp)                     /* put a double brightness to fp */
COLOR  col;
FILE  *fp;
{
        double  vd;

        vd = bright(col);
        fwrite((char *)&vd, sizeof(double), 1, fp);

        return(ferror(fp) ? -1 : 0);
}


putbint(col, fp)                        /* put an int brightness to fp */
COLOR  col;
FILE  *fp;
{
        fprintf(fp, "%d\n", (int)(bright(col)*256.));

        return(ferror(fp) ? -1 : 0);
}


putbbyte(col, fp)                       /* put a byte brightness to fp */
COLOR  col;
FILE  *fp;
{
        register int  i;
        BYTE  vb;

        i = bright(col)*256.;
        vb = min(i,255);
        fwrite((char *)&vb, sizeof(BYTE), 1, fp);

        return(ferror(fp) ? -1 : 0);
}


set_io()                        /* set put and get functions */
{
        switch (format) {
        case 'a':                                       /* ascii */
                if (brightonly) {
                        getval = getbascii;
                        putval = putbascii;
                } else {
                        getval = getcascii;
                        putval = putcascii;
                }
                return;
        case 'f':                                       /* binary float */
                if (brightonly) {
                        getval = getbfloat;
                        putval = putbfloat;
                } else {
                        getval = getcfloat;
                        putval = putcfloat;
                }
                return;
        case 'd':                                       /* binary double */
                if (brightonly) {
                        getval = getbdouble;
                        putval = putbdouble;
                } else {
                        getval = getcdouble;
                        putval = putcdouble;
                }
                return;
        case 'i':                                       /* integer */
                if (brightonly) {
                        getval = getbint;
                        putval = putbint;
                } else {
                        getval = getcint;
                        putval = putcint;
                }
                return;
        case 'b':                                       /* byte */
                if (brightonly) {
                        getval = getbbyte;
                        putval = putbbyte;
                } else {
                        getval = getcbyte;
                        putval = putcbyte;
                }
                return;
        }
}
Revision:	2.7
Committed:	Tue Nov 9 15:21:00 1993 UTC (30 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.6:	+26 -3 lines
Log Message:	added +/-e option to correct/adjust exposure
#	User	Rev	Content
1	greg	2.5	/* Copyright (c) 1992 Regents of the University of California */
2	greg	1.1
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* pvalue.c - program to print pixel values.
9			*
10			* 4/23/86
11			*/
12
13	greg	1.8	#include "standard.h"
14	greg	1.1
15			#include "color.h"
16
17	greg	1.8	#include "resolu.h"
18
19	greg	2.5	#define min(a,b) ((a)<(b)?(a):(b))
20	greg	1.1
21	greg	2.5	RESOLU picres; /* resolution of picture */
22	greg	1.1
23	greg	1.6	int uniq = 0; /* print only unique values? */
24	greg	1.1
25	greg	2.7	int doexposure = 0; /* exposure change? (>100 to print) */
26	greg	1.1
27			int dataonly = 0; /* data only format? */
28
29			int brightonly = 0; /* only brightness values? */
30
31			int reverse = 0; /* reverse conversion? */
32
33			int format = 'a'; /* input/output format */
34	greg	1.6	char fmtid = "ascii"; / format identifier for header */
35	greg	1.1
36	greg	2.3	int header = 1; /* do header? */
37	greg	1.1
38	greg	2.3	int resolution = 1; /* put/get resolution string? */
39
40	greg	2.7	int original = 0; /* convert to original values? */
41
42	greg	1.6	int wrongformat = 0; /* wrong input format? */
43
44	greg	2.5	double gamcor = 1.0; /* gamma correction */
45	greg	1.7
46	greg	2.4	int ord[3] = {RED, GRN, BLU}; /* RGB ordering */
47			int rord[4]; /* reverse ordering */
48
49	greg	1.5	COLOR exposure = WHTCOLOR;
50	greg	1.1
51			char *progname;
52
53			FILE *fin;
54
55			int (getval)(), (putval)();
56
57
58			main(argc, argv)
59			int argc;
60			char **argv;
61			{
62			extern int checkhead();
63	greg	2.7	double d, expval = 1.0;
64	greg	1.1	int i;
65
66			progname = argv[0];
67
68			for (i = 1; i < argc; i++)
69	greg	1.8	if (argv[i][0] == '-' \|\| argv[i][0] == '+')
70	greg	1.1	switch (argv[i][1]) {
71	greg	1.8	case 'h': /* header */
72			header = argv[i][0] == '+';
73	greg	1.1	break;
74	greg	2.3	case 'H': /* resolution string */
75			resolution = argv[i][0] == '+';
76			break;
77	greg	1.1	case 'u': /* unique values */
78	greg	1.8	uniq = argv[i][0] == '-';
79	greg	1.1	break;
80			case 'o': /* original values */
81	greg	1.8	original = argv[i][0] == '-';
82	greg	1.1	break;
83	greg	1.7	case 'g': /* gamma correction */
84	greg	2.7	gamcor = atof(argv[i+1]);
85	greg	1.8	if (argv[i][0] == '+')
86			gamcor = 1.0/gamcor;
87	greg	2.7	i++;
88	greg	1.7	break;
89	greg	2.7	case 'e': /* exposure correction */
90			d = atof(argv[i+1]);
91			if (argv[i+1][0] == '-' \|\| argv[i+1][0] == '+')
92			d = pow(2.0, d);
93			if (argv[i][0] == '-')
94			doexposure = 100;
95			scalecolor(exposure, d);
96			expval *= d;
97			doexposure++;
98			i++;
99			break;
100	greg	2.4	case 'R': /* reverse byte sequence */
101			if (argv[i][0] == '-') {
102			ord[0]=BLU; ord[1]=GRN; ord[2]=RED;
103			} else {
104			ord[0]=RED; ord[1]=GRN; ord[2]=BLU;
105			}
106			break;
107	greg	1.1	case 'r': /* reverse conversion */
108	greg	1.8	reverse = argv[i][0] == '-';
109	greg	1.1	break;
110			case 'b': /* brightness values */
111	greg	1.8	brightonly = argv[i][0] == '-';
112	greg	1.1	break;
113			case 'd': /* data only (no indices) */
114	greg	1.8	dataonly = argv[i][0] == '-';
115	greg	1.1	switch (argv[i][2]) {
116			case '\0':
117			case 'a': /* ascii */
118			format = 'a';
119	greg	1.6	fmtid = "ascii";
120	greg	1.1	break;
121			case 'i': /* integer */
122	greg	1.6	format = 'i';
123			fmtid = "ascii";
124			break;
125	greg	1.1	case 'b': /* byte */
126	greg	1.8	dataonly = 1;
127	greg	1.6	format = 'b';
128			fmtid = "byte";
129			break;
130	greg	1.1	case 'f': /* float */
131	greg	1.8	dataonly = 1;
132	greg	1.6	format = 'f';
133			fmtid = "float";
134			break;
135	greg	1.1	case 'd': /* double */
136	greg	1.8	dataonly = 1;
137	greg	1.6	format = 'd';
138			fmtid = "double";
139	greg	1.1	break;
140			default:
141			goto unkopt;
142			}
143			break;
144			case 'x': /* x resolution */
145	greg	2.6	case 'X': /* x resolution */
146	greg	2.3	resolution = 0;
147	greg	1.8	if (argv[i][0] == '-')
148			picres.or \|= XDECR;
149			picres.xr = atoi(argv[++i]);
150	greg	1.1	break;
151			case 'y': /* y resolution */
152	greg	2.6	case 'Y': /* y resolution */
153	greg	2.3	resolution = 0;
154	greg	1.8	if (argv[i][0] == '-')
155			picres.or \|= YDECR;
156			if (picres.xr == 0)
157			picres.or \|= YMAJOR;
158			picres.yr = atoi(argv[++i]);
159	greg	1.1	break;
160			default:
161			unkopt:
162			fprintf(stderr, "%s: unknown option: %s\n",
163			progname, argv[i]);
164			quit(1);
165			break;
166			}
167			else
168			break;
169	greg	1.6	/* recognize special formats */
170			if (dataonly && format == 'b')
171			if (brightonly)
172			fmtid = "8-bit_grey";
173			else
174			fmtid = "24-bit_rgb";
175	greg	2.4	/* assign reverse ordering */
176			rord[ord[0]] = 0;
177			rord[ord[1]] = 1;
178			rord[ord[2]] = 2;
179			/* get input */
180	greg	1.1	if (i == argc) {
181			fin = stdin;
182			} else if (i == argc-1) {
183			if ((fin = fopen(argv[i], "r")) == NULL) {
184			fprintf(stderr, "%s: can't open file \"%s\"\n",
185			progname, argv[i]);
186			quit(1);
187			}
188			} else {
189			fprintf(stderr, "%s: bad # file arguments\n", progname);
190			quit(1);
191			}
192
193			set_io();
194
195			if (reverse) {
196	greg	2.5	#ifdef MSDOS
197			setmode(fileno(stdout), O_BINARY);
198			if (format != 'a' && format != 'i')
199			setmode(fileno(fin), O_BINARY);
200			#endif
201	greg	1.6	/* get header */
202			if (header && checkheader(fin, fmtid, stdout) < 0) {
203			fprintf(stderr, "%s: wrong input format\n", progname);
204			quit(1);
205			}
206	greg	2.3	/* get resolution */
207			if ((resolution && !fgetsresolu(&picres, fin)) \|\|
208			picres.xr <= 0 \|\| picres.yr <= 0) {
209			fprintf(stderr, "%s: missing resolution\n", progname);
210			quit(1);
211			}
212	greg	1.6	/* add to header */
213			printargs(i, argv, stdout);
214	greg	2.7	if (doexposure > 100)
215			fputexpos(expval, stdout);
216	greg	1.6	fputformat(COLRFMT, stdout);
217	greg	1.8	putchar('\n');
218	greg	2.3	fputsresolu(&picres, stdout); /* always put resolution */
219	greg	1.1	valtopix();
220			} else {
221	greg	2.5	#ifdef MSDOS
222			setmode(fileno(fin), O_BINARY);
223			if (format != 'a' && format != 'i')
224			setmode(fileno(stdout), O_BINARY);
225			#endif
226	greg	1.1	/* get header */
227	greg	1.6	getheader(fin, checkhead, NULL);
228			if (wrongformat) {
229			fprintf(stderr, "%s: input not a Radiance picture\n",
230			progname);
231			quit(1);
232			}
233	greg	2.3	if (!fgetsresolu(&picres, fin)) {
234			fprintf(stderr, "%s: missing resolution\n", progname);
235			quit(1);
236			}
237	greg	1.1	if (header) {
238			printargs(i, argv, stdout);
239	greg	2.7	if (doexposure > 100)
240			fputexpos(expval, stdout);
241	greg	1.6	fputformat(fmtid, stdout);
242	greg	1.8	putchar('\n');
243	greg	1.1	}
244	greg	2.3	if (resolution) /* put resolution */
245			fputsresolu(&picres, stdout);
246	greg	1.1	pixtoval();
247			}
248
249			quit(0);
250			}
251
252
253			checkhead(line) /* deal with line from header */
254			char *line;
255			{
256	greg	1.6	char fmt[32];
257	greg	1.5	double d;
258			COLOR ctmp;
259
260	greg	1.6	if (isformat(line)) {
261			formatval(fmt, line);
262			wrongformat = strcmp(fmt, COLRFMT);
263			} else if (original && isexpos(line)) {
264	greg	1.5	d = 1.0/exposval(line);
265			scalecolor(exposure, d);
266	greg	2.7	doexposure++;
267	greg	1.6	} else if (original && iscolcor(line)) {
268	greg	1.5	colcorval(ctmp, line);
269	greg	1.7	setcolor(exposure, colval(exposure,RED)/colval(ctmp,RED),
270			colval(exposure,GRN)/colval(ctmp,GRN),
271			colval(exposure,BLU)/colval(ctmp,BLU));
272	greg	2.7	doexposure++;
273	greg	1.6	} else if (header)
274			fputs(line, stdout);
275	greg	1.1	}
276
277
278			pixtoval() /* convert picture to values */
279			{
280	greg	2.5	register COLOR *scanln;
281	greg	1.7	int dogamma;
282	greg	1.1	COLOR lastc;
283	greg	1.8	FLOAT hv[2];
284	greg	1.1	int y;
285			register int x;
286
287	greg	1.8	scanln = (COLOR )malloc(scanlen(&picres)sizeof(COLOR));
288	greg	1.1	if (scanln == NULL) {
289			fprintf(stderr, "%s: out of memory\n", progname);
290			quit(1);
291			}
292	greg	1.8	dogamma = gamcor < .95 \|\| gamcor > 1.05;
293	greg	1.1	setcolor(lastc, 0.0, 0.0, 0.0);
294	greg	1.8	for (y = 0; y < numscans(&picres); y++) {
295			if (freadscan(scanln, scanlen(&picres), fin) < 0) {
296	greg	1.1	fprintf(stderr, "%s: read error\n", progname);
297			quit(1);
298			}
299	greg	1.8	for (x = 0; x < scanlen(&picres); x++) {
300	greg	1.1	if (uniq)
301	greg	1.7	if ( colval(scanln[x],RED) ==
302			colval(lastc,RED) &&
303			colval(scanln[x],GRN) ==
304			colval(lastc,GRN) &&
305			colval(scanln[x],BLU) ==
306			colval(lastc,BLU) )
307	greg	1.1	continue;
308			else
309			copycolor(lastc, scanln[x]);
310	greg	2.7	if (doexposure)
311	greg	1.5	multcolor(scanln[x], exposure);
312	greg	1.7	if (dogamma)
313			setcolor(scanln[x],
314	greg	1.8	pow(colval(scanln[x],RED), 1.0/gamcor),
315			pow(colval(scanln[x],GRN), 1.0/gamcor),
316			pow(colval(scanln[x],BLU), 1.0/gamcor));
317			if (!dataonly) {
318			pix2loc(hv, &picres, x, y);
319			printf("%7d %7d ", (int)(hv[0]*picres.xr),
320			(int)(hv[1]*picres.yr));
321			}
322	greg	1.1	if ((*putval)(scanln[x], stdout) < 0) {
323			fprintf(stderr, "%s: write error\n", progname);
324			quit(1);
325			}
326			}
327			}
328			free((char *)scanln);
329			}
330
331
332			valtopix() /* convert values to a pixel file */
333			{
334	greg	1.7	int dogamma;
335	greg	2.5	register COLOR *scanln;
336	greg	1.1	int y;
337			register int x;
338
339	greg	1.8	scanln = (COLOR )malloc(scanlen(&picres)sizeof(COLOR));
340	greg	1.1	if (scanln == NULL) {
341			fprintf(stderr, "%s: out of memory\n", progname);
342			quit(1);
343			}
344	greg	1.8	dogamma = gamcor < .95 \|\| gamcor > 1.05;
345			for (y = 0; y < numscans(&picres); y++) {
346			for (x = 0; x < scanlen(&picres); x++) {
347	greg	1.1	if (!dataonly)
348			fscanf(fin, "%d %d");
349			if ((*getval)(scanln[x], fin) < 0) {
350			fprintf(stderr, "%s: read error\n", progname);
351			quit(1);
352			}
353	greg	1.7	if (dogamma)
354			setcolor(scanln[x],
355	greg	1.8	pow(colval(scanln[x],RED), gamcor),
356			pow(colval(scanln[x],GRN), gamcor),
357			pow(colval(scanln[x],BLU), gamcor));
358	greg	2.7	if (doexposure)
359			multcolor(scanln[x], exposure);
360	greg	1.1	}
361	greg	1.8	if (fwritescan(scanln, scanlen(&picres), stdout) < 0) {
362	greg	1.1	fprintf(stderr, "%s: write error\n", progname);
363			quit(1);
364			}
365			}
366			free((char *)scanln);
367			}
368
369
370			quit(code)
371			int code;
372			{
373			exit(code);
374			}
375
376
377			getcascii(col, fp) /* get an ascii color value from fp */
378			COLOR col;
379			FILE *fp;
380			{
381	greg	2.5	double vd[3];
382	greg	1.1
383			if (fscanf(fp, "%lf %lf %lf", &vd[0], &vd[1], &vd[2]) != 3)
384			return(-1);
385	greg	2.4	setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
386	greg	1.1	return(0);
387			}
388
389
390			getcdouble(col, fp) /* get a double color value from fp */
391			COLOR col;
392			FILE *fp;
393			{
394	greg	2.5	double vd[3];
395	greg	1.1
396	greg	1.4	if (fread((char *)vd, sizeof(double), 3, fp) != 3)
397	greg	1.1	return(-1);
398	greg	2.4	setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
399	greg	1.1	return(0);
400			}
401
402
403			getcfloat(col, fp) /* get a float color value from fp */
404			COLOR col;
405			FILE *fp;
406			{
407			float vf[3];
408
409	greg	1.4	if (fread((char *)vf, sizeof(float), 3, fp) != 3)
410	greg	1.1	return(-1);
411	greg	2.4	setcolor(col, vf[rord[RED]], vf[rord[GRN]], vf[rord[BLU]]);
412	greg	1.1	return(0);
413			}
414
415
416			getcint(col, fp) /* get an int color value from fp */
417			COLOR col;
418			FILE *fp;
419			{
420			int vi[3];
421
422			if (fscanf(fp, "%d %d %d", &vi[0], &vi[1], &vi[2]) != 3)
423			return(-1);
424	greg	2.4	setcolor(col, (vi[rord[RED]]+.5)/256.,
425			(vi[rord[GRN]]+.5)/256., (vi[rord[BLU]]+.5)/256.);
426	greg	1.1	return(0);
427			}
428
429
430			getcbyte(col, fp) /* get a byte color value from fp */
431			COLOR col;
432			FILE *fp;
433			{
434			BYTE vb[3];
435
436	greg	1.4	if (fread((char *)vb, sizeof(BYTE), 3, fp) != 3)
437	greg	1.1	return(-1);
438	greg	2.4	setcolor(col, (vb[rord[RED]]+.5)/256.,
439			(vb[rord[GRN]]+.5)/256., (vb[rord[BLU]]+.5)/256.);
440	greg	1.1	return(0);
441			}
442
443
444			getbascii(col, fp) /* get an ascii brightness value from fp */
445			COLOR col;
446			FILE *fp;
447			{
448	greg	2.5	double vd;
449	greg	1.1
450			if (fscanf(fp, "%lf", &vd) != 1)
451			return(-1);
452			setcolor(col, vd, vd, vd);
453			return(0);
454			}
455
456
457			getbdouble(col, fp) /* get a double brightness value from fp */
458			COLOR col;
459			FILE *fp;
460			{
461	greg	2.5	double vd;
462	greg	1.1
463	greg	1.4	if (fread((char *)&vd, sizeof(double), 1, fp) != 1)
464	greg	1.1	return(-1);
465			setcolor(col, vd, vd, vd);
466			return(0);
467			}
468
469
470			getbfloat(col, fp) /* get a float brightness value from fp */
471			COLOR col;
472			FILE *fp;
473			{
474			float vf;
475
476	greg	1.4	if (fread((char *)&vf, sizeof(float), 1, fp) != 1)
477	greg	1.1	return(-1);
478			setcolor(col, vf, vf, vf);
479			return(0);
480			}
481
482
483			getbint(col, fp) /* get an int brightness value from fp */
484			COLOR col;
485			FILE *fp;
486			{
487			int vi;
488	greg	2.5	double d;
489	greg	1.1
490			if (fscanf(fp, "%d", &vi) != 1)
491			return(-1);
492			d = (vi+.5)/256.;
493			setcolor(col, d, d, d);
494			return(0);
495			}
496
497
498			getbbyte(col, fp) /* get a byte brightness value from fp */
499			COLOR col;
500			FILE *fp;
501			{
502			BYTE vb;
503	greg	2.5	double d;
504	greg	1.1
505	greg	1.4	if (fread((char *)&vb, sizeof(BYTE), 1, fp) != 1)
506	greg	1.1	return(-1);
507			d = (vb+.5)/256.;
508			setcolor(col, d, d, d);
509			return(0);
510			}
511
512
513			putcascii(col, fp) /* put an ascii color to fp */
514			COLOR col;
515			FILE *fp;
516			{
517			fprintf(fp, "%15.3e %15.3e %15.3e\n",
518	greg	2.4	colval(col,ord[0]),
519			colval(col,ord[1]),
520			colval(col,ord[2]));
521	greg	1.1
522			return(ferror(fp) ? -1 : 0);
523			}
524
525
526			putcfloat(col, fp) /* put a float color to fp */
527			COLOR col;
528			FILE *fp;
529			{
530			float vf[3];
531
532	greg	2.4	vf[0] = colval(col,ord[0]);
533			vf[1] = colval(col,ord[1]);
534			vf[2] = colval(col,ord[2]);
535	greg	1.4	fwrite((char *)vf, sizeof(float), 3, fp);
536	greg	1.1
537			return(ferror(fp) ? -1 : 0);
538			}
539
540
541			putcdouble(col, fp) /* put a double color to fp */
542			COLOR col;
543			FILE *fp;
544			{
545	greg	2.5	double vd[3];
546	greg	1.1
547	greg	2.4	vd[0] = colval(col,ord[0]);
548			vd[1] = colval(col,ord[1]);
549			vd[2] = colval(col,ord[2]);
550	greg	1.4	fwrite((char *)vd, sizeof(double), 3, fp);
551	greg	1.1
552			return(ferror(fp) ? -1 : 0);
553			}
554
555
556			putcint(col, fp) /* put an int color to fp */
557			COLOR col;
558			FILE *fp;
559			{
560			fprintf(fp, "%d %d %d\n",
561	greg	2.4	(int)(colval(col,ord[0])*256.),
562			(int)(colval(col,ord[1])*256.),
563			(int)(colval(col,ord[2])*256.));
564	greg	1.1
565			return(ferror(fp) ? -1 : 0);
566			}
567
568
569			putcbyte(col, fp) /* put a byte color to fp */
570			COLOR col;
571			FILE *fp;
572			{
573			register int i;
574			BYTE vb[3];
575
576	greg	2.4	i = colval(col,ord[0])*256.;
577	greg	1.1	vb[0] = min(i,255);
578	greg	2.4	i = colval(col,ord[1])*256.;
579	greg	1.1	vb[1] = min(i,255);
580	greg	2.4	i = colval(col,ord[2])*256.;
581	greg	1.1	vb[2] = min(i,255);
582	greg	1.4	fwrite((char *)vb, sizeof(BYTE), 3, fp);
583	greg	1.1
584			return(ferror(fp) ? -1 : 0);
585			}
586
587
588			putbascii(col, fp) /* put an ascii brightness to fp */
589			COLOR col;
590			FILE *fp;
591			{
592			fprintf(fp, "%15.3e\n", bright(col));
593
594			return(ferror(fp) ? -1 : 0);
595			}
596
597
598			putbfloat(col, fp) /* put a float brightness to fp */
599			COLOR col;
600			FILE *fp;
601			{
602			float vf;
603
604			vf = bright(col);
605	greg	1.4	fwrite((char *)&vf, sizeof(float), 1, fp);
606	greg	1.1
607			return(ferror(fp) ? -1 : 0);
608			}
609
610
611			putbdouble(col, fp) /* put a double brightness to fp */
612			COLOR col;
613			FILE *fp;
614			{
615	greg	2.5	double vd;
616	greg	1.1
617			vd = bright(col);
618	greg	1.4	fwrite((char *)&vd, sizeof(double), 1, fp);
619	greg	1.1
620			return(ferror(fp) ? -1 : 0);
621			}
622
623
624			putbint(col, fp) /* put an int brightness to fp */
625			COLOR col;
626			FILE *fp;
627			{
628			fprintf(fp, "%d\n", (int)(bright(col)*256.));
629
630			return(ferror(fp) ? -1 : 0);
631			}
632
633
634			putbbyte(col, fp) /* put a byte brightness to fp */
635			COLOR col;
636			FILE *fp;
637			{
638			register int i;
639			BYTE vb;
640
641			i = bright(col)*256.;
642			vb = min(i,255);
643	greg	1.4	fwrite((char *)&vb, sizeof(BYTE), 1, fp);
644	greg	1.1
645			return(ferror(fp) ? -1 : 0);
646			}
647
648
649			set_io() /* set put and get functions */
650			{
651			switch (format) {
652			case 'a': /* ascii */
653			if (brightonly) {
654			getval = getbascii;
655			putval = putbascii;
656			} else {
657			getval = getcascii;
658			putval = putcascii;
659			}
660			return;
661			case 'f': /* binary float */
662			if (brightonly) {
663			getval = getbfloat;
664			putval = putbfloat;
665			} else {
666			getval = getcfloat;
667			putval = putcfloat;
668			}
669			return;
670			case 'd': /* binary double */
671			if (brightonly) {
672			getval = getbdouble;
673			putval = putbdouble;
674			} else {
675			getval = getcdouble;
676			putval = putcdouble;
677			}
678			return;
679			case 'i': /* integer */
680			if (brightonly) {
681			getval = getbint;
682			putval = putbint;
683			} else {
684			getval = getcint;
685			putval = putcint;
686			}
687			return;
688			case 'b': /* byte */
689			if (brightonly) {
690			getval = getbbyte;
691			putval = putbbyte;
692			} else {
693			getval = getcbyte;
694			putval = putcbyte;
695			}
696			return;
697			}
698			}