src/px/pvalue.c

/* Copyright (c) 1991 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  original = 0;              /* convert back to original values? */

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  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();
        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]);
                                if (argv[i][0] == '+')
                                        gamcor = 1.0/gamcor;
                                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 */
                                resolution = 0;
                                if (argv[i][0] == '-')
                                        picres.or |= XDECR;
                                picres.xr = atoi(argv[++i]);
                                break;
                        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) {
                                        /* 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);
                fputformat(COLRFMT, stdout);
                putchar('\n');
                fputsresolu(&picres, stdout);   /* always put resolution */
                valtopix();
        } else {
                                                /* 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);
                        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);
        } 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));
        } 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 (original)
                                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 (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:	2.4
Committed:	Fri May 8 11:55:42 1992 UTC (31 years, 11 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.3:	+37 -21 lines
Log Message:	added -R option for color order reversal
#	User	Rev	Content
1	greg	1.7	/* Copyright (c) 1991 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	1.1	#define min(a,b) ((a)<(b)?(a):(b))
20
21	greg	1.8	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	1.6	int original = 0; /* convert back to original values? */
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	1.6	int wrongformat = 0; /* wrong input format? */
41
42	greg	1.8	double gamcor = 1.0; /* gamma correction */
43	greg	1.7
44	greg	2.4	int ord[3] = {RED, GRN, BLU}; /* RGB ordering */
45			int rord[4]; /* reverse ordering */
46
47	greg	1.5	COLOR exposure = WHTCOLOR;
48	greg	1.1
49			char *progname;
50
51			FILE *fin;
52
53			int (getval)(), (putval)();
54
55
56			main(argc, argv)
57			int argc;
58			char **argv;
59			{
60			extern int checkhead();
61			int i;
62
63			progname = argv[0];
64
65			for (i = 1; i < argc; i++)
66	greg	1.8	if (argv[i][0] == '-' \|\| argv[i][0] == '+')
67	greg	1.1	switch (argv[i][1]) {
68	greg	1.8	case 'h': /* header */
69			header = argv[i][0] == '+';
70	greg	1.1	break;
71	greg	2.3	case 'H': /* resolution string */
72			resolution = argv[i][0] == '+';
73			break;
74	greg	1.1	case 'u': /* unique values */
75	greg	1.8	uniq = argv[i][0] == '-';
76	greg	1.1	break;
77			case 'o': /* original values */
78	greg	1.8	original = argv[i][0] == '-';
79	greg	1.1	break;
80	greg	1.7	case 'g': /* gamma correction */
81	greg	1.8	gamcor = atof(argv[++i]);
82			if (argv[i][0] == '+')
83			gamcor = 1.0/gamcor;
84	greg	1.7	break;
85	greg	2.4	case 'R': /* reverse byte sequence */
86			if (argv[i][0] == '-') {
87			ord[0]=BLU; ord[1]=GRN; ord[2]=RED;
88			} else {
89			ord[0]=RED; ord[1]=GRN; ord[2]=BLU;
90			}
91			break;
92	greg	1.1	case 'r': /* reverse conversion */
93	greg	1.8	reverse = argv[i][0] == '-';
94	greg	1.1	break;
95			case 'b': /* brightness values */
96	greg	1.8	brightonly = argv[i][0] == '-';
97	greg	1.1	break;
98			case 'd': /* data only (no indices) */
99	greg	1.8	dataonly = argv[i][0] == '-';
100	greg	1.1	switch (argv[i][2]) {
101			case '\0':
102			case 'a': /* ascii */
103			format = 'a';
104	greg	1.6	fmtid = "ascii";
105	greg	1.1	break;
106			case 'i': /* integer */
107	greg	1.6	format = 'i';
108			fmtid = "ascii";
109			break;
110	greg	1.1	case 'b': /* byte */
111	greg	1.8	dataonly = 1;
112	greg	1.6	format = 'b';
113			fmtid = "byte";
114			break;
115	greg	1.1	case 'f': /* float */
116	greg	1.8	dataonly = 1;
117	greg	1.6	format = 'f';
118			fmtid = "float";
119			break;
120	greg	1.1	case 'd': /* double */
121	greg	1.8	dataonly = 1;
122	greg	1.6	format = 'd';
123			fmtid = "double";
124	greg	1.1	break;
125			default:
126			goto unkopt;
127			}
128			break;
129			case 'x': /* x resolution */
130	greg	2.3	resolution = 0;
131	greg	1.8	if (argv[i][0] == '-')
132			picres.or \|= XDECR;
133			picres.xr = atoi(argv[++i]);
134	greg	1.1	break;
135			case 'y': /* y resolution */
136	greg	2.3	resolution = 0;
137	greg	1.8	if (argv[i][0] == '-')
138			picres.or \|= YDECR;
139			if (picres.xr == 0)
140			picres.or \|= YMAJOR;
141			picres.yr = atoi(argv[++i]);
142	greg	1.1	break;
143			default:
144			unkopt:
145			fprintf(stderr, "%s: unknown option: %s\n",
146			progname, argv[i]);
147			quit(1);
148			break;
149			}
150			else
151			break;
152	greg	1.6	/* recognize special formats */
153			if (dataonly && format == 'b')
154			if (brightonly)
155			fmtid = "8-bit_grey";
156			else
157			fmtid = "24-bit_rgb";
158	greg	2.4	/* assign reverse ordering */
159			rord[ord[0]] = 0;
160			rord[ord[1]] = 1;
161			rord[ord[2]] = 2;
162			/* get input */
163	greg	1.1	if (i == argc) {
164			fin = stdin;
165			} else if (i == argc-1) {
166			if ((fin = fopen(argv[i], "r")) == NULL) {
167			fprintf(stderr, "%s: can't open file \"%s\"\n",
168			progname, argv[i]);
169			quit(1);
170			}
171			} else {
172			fprintf(stderr, "%s: bad # file arguments\n", progname);
173			quit(1);
174			}
175
176			set_io();
177
178			if (reverse) {
179	greg	1.6	/* get header */
180			if (header && checkheader(fin, fmtid, stdout) < 0) {
181			fprintf(stderr, "%s: wrong input format\n", progname);
182			quit(1);
183			}
184	greg	2.3	/* get resolution */
185			if ((resolution && !fgetsresolu(&picres, fin)) \|\|
186			picres.xr <= 0 \|\| picres.yr <= 0) {
187			fprintf(stderr, "%s: missing resolution\n", progname);
188			quit(1);
189			}
190	greg	1.6	/* add to header */
191			printargs(i, argv, stdout);
192			fputformat(COLRFMT, stdout);
193	greg	1.8	putchar('\n');
194	greg	2.3	fputsresolu(&picres, stdout); /* always put resolution */
195	greg	1.1	valtopix();
196			} else {
197			/* get header */
198	greg	1.6	getheader(fin, checkhead, NULL);
199			if (wrongformat) {
200			fprintf(stderr, "%s: input not a Radiance picture\n",
201			progname);
202			quit(1);
203			}
204	greg	2.3	if (!fgetsresolu(&picres, fin)) {
205			fprintf(stderr, "%s: missing resolution\n", progname);
206			quit(1);
207			}
208	greg	1.1	if (header) {
209			printargs(i, argv, stdout);
210	greg	1.6	fputformat(fmtid, stdout);
211	greg	1.8	putchar('\n');
212	greg	1.1	}
213	greg	2.3	if (resolution) /* put resolution */
214			fputsresolu(&picres, stdout);
215	greg	1.1	pixtoval();
216			}
217
218			quit(0);
219			}
220
221
222			checkhead(line) /* deal with line from header */
223			char *line;
224			{
225	greg	1.6	char fmt[32];
226	greg	1.5	double d;
227			COLOR ctmp;
228
229	greg	1.6	if (isformat(line)) {
230			formatval(fmt, line);
231			wrongformat = strcmp(fmt, COLRFMT);
232			} else if (original && isexpos(line)) {
233	greg	1.5	d = 1.0/exposval(line);
234			scalecolor(exposure, d);
235	greg	1.6	} else if (original && iscolcor(line)) {
236	greg	1.5	colcorval(ctmp, line);
237	greg	1.7	setcolor(exposure, colval(exposure,RED)/colval(ctmp,RED),
238			colval(exposure,GRN)/colval(ctmp,GRN),
239			colval(exposure,BLU)/colval(ctmp,BLU));
240	greg	1.6	} else if (header)
241			fputs(line, stdout);
242	greg	1.1	}
243
244
245			pixtoval() /* convert picture to values */
246			{
247	greg	1.7	register COLOR *scanln;
248			int dogamma;
249	greg	1.1	COLOR lastc;
250	greg	1.8	FLOAT hv[2];
251	greg	1.1	int y;
252			register int x;
253
254	greg	1.8	scanln = (COLOR )malloc(scanlen(&picres)sizeof(COLOR));
255	greg	1.1	if (scanln == NULL) {
256			fprintf(stderr, "%s: out of memory\n", progname);
257			quit(1);
258			}
259	greg	1.8	dogamma = gamcor < .95 \|\| gamcor > 1.05;
260	greg	1.1	setcolor(lastc, 0.0, 0.0, 0.0);
261	greg	1.8	for (y = 0; y < numscans(&picres); y++) {
262			if (freadscan(scanln, scanlen(&picres), fin) < 0) {
263	greg	1.1	fprintf(stderr, "%s: read error\n", progname);
264			quit(1);
265			}
266	greg	1.8	for (x = 0; x < scanlen(&picres); x++) {
267	greg	1.1	if (uniq)
268	greg	1.7	if ( colval(scanln[x],RED) ==
269			colval(lastc,RED) &&
270			colval(scanln[x],GRN) ==
271			colval(lastc,GRN) &&
272			colval(scanln[x],BLU) ==
273			colval(lastc,BLU) )
274	greg	1.1	continue;
275			else
276			copycolor(lastc, scanln[x]);
277			if (original)
278	greg	1.5	multcolor(scanln[x], exposure);
279	greg	1.7	if (dogamma)
280			setcolor(scanln[x],
281	greg	1.8	pow(colval(scanln[x],RED), 1.0/gamcor),
282			pow(colval(scanln[x],GRN), 1.0/gamcor),
283			pow(colval(scanln[x],BLU), 1.0/gamcor));
284			if (!dataonly) {
285			pix2loc(hv, &picres, x, y);
286			printf("%7d %7d ", (int)(hv[0]*picres.xr),
287			(int)(hv[1]*picres.yr));
288			}
289	greg	1.1	if ((*putval)(scanln[x], stdout) < 0) {
290			fprintf(stderr, "%s: write error\n", progname);
291			quit(1);
292			}
293			}
294			}
295			free((char *)scanln);
296			}
297
298
299			valtopix() /* convert values to a pixel file */
300			{
301	greg	1.7	int dogamma;
302			register COLOR *scanln;
303	greg	1.1	int y;
304			register int x;
305
306	greg	1.8	scanln = (COLOR )malloc(scanlen(&picres)sizeof(COLOR));
307	greg	1.1	if (scanln == NULL) {
308			fprintf(stderr, "%s: out of memory\n", progname);
309			quit(1);
310			}
311	greg	1.8	dogamma = gamcor < .95 \|\| gamcor > 1.05;
312			for (y = 0; y < numscans(&picres); y++) {
313			for (x = 0; x < scanlen(&picres); x++) {
314	greg	1.1	if (!dataonly)
315			fscanf(fin, "%d %d");
316			if ((*getval)(scanln[x], fin) < 0) {
317			fprintf(stderr, "%s: read error\n", progname);
318			quit(1);
319			}
320	greg	1.7	if (dogamma)
321			setcolor(scanln[x],
322	greg	1.8	pow(colval(scanln[x],RED), gamcor),
323			pow(colval(scanln[x],GRN), gamcor),
324			pow(colval(scanln[x],BLU), gamcor));
325	greg	1.1	}
326	greg	1.8	if (fwritescan(scanln, scanlen(&picres), stdout) < 0) {
327	greg	1.1	fprintf(stderr, "%s: write error\n", progname);
328			quit(1);
329			}
330			}
331			free((char *)scanln);
332			}
333
334
335			quit(code)
336			int code;
337			{
338			exit(code);
339			}
340
341
342			getcascii(col, fp) /* get an ascii color value from fp */
343			COLOR col;
344			FILE *fp;
345			{
346			double vd[3];
347
348			if (fscanf(fp, "%lf %lf %lf", &vd[0], &vd[1], &vd[2]) != 3)
349			return(-1);
350	greg	2.4	setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
351	greg	1.1	return(0);
352			}
353
354
355			getcdouble(col, fp) /* get a double color value from fp */
356			COLOR col;
357			FILE *fp;
358			{
359			double vd[3];
360
361	greg	1.4	if (fread((char *)vd, sizeof(double), 3, fp) != 3)
362	greg	1.1	return(-1);
363	greg	2.4	setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
364	greg	1.1	return(0);
365			}
366
367
368			getcfloat(col, fp) /* get a float color value from fp */
369			COLOR col;
370			FILE *fp;
371			{
372			float vf[3];
373
374	greg	1.4	if (fread((char *)vf, sizeof(float), 3, fp) != 3)
375	greg	1.1	return(-1);
376	greg	2.4	setcolor(col, vf[rord[RED]], vf[rord[GRN]], vf[rord[BLU]]);
377	greg	1.1	return(0);
378			}
379
380
381			getcint(col, fp) /* get an int color value from fp */
382			COLOR col;
383			FILE *fp;
384			{
385			int vi[3];
386
387			if (fscanf(fp, "%d %d %d", &vi[0], &vi[1], &vi[2]) != 3)
388			return(-1);
389	greg	2.4	setcolor(col, (vi[rord[RED]]+.5)/256.,
390			(vi[rord[GRN]]+.5)/256., (vi[rord[BLU]]+.5)/256.);
391	greg	1.1	return(0);
392			}
393
394
395			getcbyte(col, fp) /* get a byte color value from fp */
396			COLOR col;
397			FILE *fp;
398			{
399			BYTE vb[3];
400
401	greg	1.4	if (fread((char *)vb, sizeof(BYTE), 3, fp) != 3)
402	greg	1.1	return(-1);
403	greg	2.4	setcolor(col, (vb[rord[RED]]+.5)/256.,
404			(vb[rord[GRN]]+.5)/256., (vb[rord[BLU]]+.5)/256.);
405	greg	1.1	return(0);
406			}
407
408
409			getbascii(col, fp) /* get an ascii brightness value from fp */
410			COLOR col;
411			FILE *fp;
412			{
413			double vd;
414
415			if (fscanf(fp, "%lf", &vd) != 1)
416			return(-1);
417			setcolor(col, vd, vd, vd);
418			return(0);
419			}
420
421
422			getbdouble(col, fp) /* get a double brightness value from fp */
423			COLOR col;
424			FILE *fp;
425			{
426			double vd;
427
428	greg	1.4	if (fread((char *)&vd, sizeof(double), 1, fp) != 1)
429	greg	1.1	return(-1);
430			setcolor(col, vd, vd, vd);
431			return(0);
432			}
433
434
435			getbfloat(col, fp) /* get a float brightness value from fp */
436			COLOR col;
437			FILE *fp;
438			{
439			float vf;
440
441	greg	1.4	if (fread((char *)&vf, sizeof(float), 1, fp) != 1)
442	greg	1.1	return(-1);
443			setcolor(col, vf, vf, vf);
444			return(0);
445			}
446
447
448			getbint(col, fp) /* get an int brightness value from fp */
449			COLOR col;
450			FILE *fp;
451			{
452			int vi;
453			double d;
454
455			if (fscanf(fp, "%d", &vi) != 1)
456			return(-1);
457			d = (vi+.5)/256.;
458			setcolor(col, d, d, d);
459			return(0);
460			}
461
462
463			getbbyte(col, fp) /* get a byte brightness value from fp */
464			COLOR col;
465			FILE *fp;
466			{
467			BYTE vb;
468			double d;
469
470	greg	1.4	if (fread((char *)&vb, sizeof(BYTE), 1, fp) != 1)
471	greg	1.1	return(-1);
472			d = (vb+.5)/256.;
473			setcolor(col, d, d, d);
474			return(0);
475			}
476
477
478			putcascii(col, fp) /* put an ascii color to fp */
479			COLOR col;
480			FILE *fp;
481			{
482			fprintf(fp, "%15.3e %15.3e %15.3e\n",
483	greg	2.4	colval(col,ord[0]),
484			colval(col,ord[1]),
485			colval(col,ord[2]));
486	greg	1.1
487			return(ferror(fp) ? -1 : 0);
488			}
489
490
491			putcfloat(col, fp) /* put a float color to fp */
492			COLOR col;
493			FILE *fp;
494			{
495			float vf[3];
496
497	greg	2.4	vf[0] = colval(col,ord[0]);
498			vf[1] = colval(col,ord[1]);
499			vf[2] = colval(col,ord[2]);
500	greg	1.4	fwrite((char *)vf, sizeof(float), 3, fp);
501	greg	1.1
502			return(ferror(fp) ? -1 : 0);
503			}
504
505
506			putcdouble(col, fp) /* put a double color to fp */
507			COLOR col;
508			FILE *fp;
509			{
510			double vd[3];
511
512	greg	2.4	vd[0] = colval(col,ord[0]);
513			vd[1] = colval(col,ord[1]);
514			vd[2] = colval(col,ord[2]);
515	greg	1.4	fwrite((char *)vd, sizeof(double), 3, fp);
516	greg	1.1
517			return(ferror(fp) ? -1 : 0);
518			}
519
520
521			putcint(col, fp) /* put an int color to fp */
522			COLOR col;
523			FILE *fp;
524			{
525			fprintf(fp, "%d %d %d\n",
526	greg	2.4	(int)(colval(col,ord[0])*256.),
527			(int)(colval(col,ord[1])*256.),
528			(int)(colval(col,ord[2])*256.));
529	greg	1.1
530			return(ferror(fp) ? -1 : 0);
531			}
532
533
534			putcbyte(col, fp) /* put a byte color to fp */
535			COLOR col;
536			FILE *fp;
537			{
538			register int i;
539			BYTE vb[3];
540
541	greg	2.4	i = colval(col,ord[0])*256.;
542	greg	1.1	vb[0] = min(i,255);
543	greg	2.4	i = colval(col,ord[1])*256.;
544	greg	1.1	vb[1] = min(i,255);
545	greg	2.4	i = colval(col,ord[2])*256.;
546	greg	1.1	vb[2] = min(i,255);
547	greg	1.4	fwrite((char *)vb, sizeof(BYTE), 3, fp);
548	greg	1.1
549			return(ferror(fp) ? -1 : 0);
550			}
551
552
553			putbascii(col, fp) /* put an ascii brightness to fp */
554			COLOR col;
555			FILE *fp;
556			{
557			fprintf(fp, "%15.3e\n", bright(col));
558
559			return(ferror(fp) ? -1 : 0);
560			}
561
562
563			putbfloat(col, fp) /* put a float brightness to fp */
564			COLOR col;
565			FILE *fp;
566			{
567			float vf;
568
569			vf = bright(col);
570	greg	1.4	fwrite((char *)&vf, sizeof(float), 1, fp);
571	greg	1.1
572			return(ferror(fp) ? -1 : 0);
573			}
574
575
576			putbdouble(col, fp) /* put a double brightness to fp */
577			COLOR col;
578			FILE *fp;
579			{
580			double vd;
581
582			vd = bright(col);
583	greg	1.4	fwrite((char *)&vd, sizeof(double), 1, fp);
584	greg	1.1
585			return(ferror(fp) ? -1 : 0);
586			}
587
588
589			putbint(col, fp) /* put an int brightness to fp */
590			COLOR col;
591			FILE *fp;
592			{
593			fprintf(fp, "%d\n", (int)(bright(col)*256.));
594
595			return(ferror(fp) ? -1 : 0);
596			}
597
598
599			putbbyte(col, fp) /* put a byte brightness to fp */
600			COLOR col;
601			FILE *fp;
602			{
603			register int i;
604			BYTE vb;
605
606			i = bright(col)*256.;
607			vb = min(i,255);
608	greg	1.4	fwrite((char *)&vb, sizeof(BYTE), 1, fp);
609	greg	1.1
610			return(ferror(fp) ? -1 : 0);
611			}
612
613
614			set_io() /* set put and get functions */
615			{
616			switch (format) {
617			case 'a': /* ascii */
618			if (brightonly) {
619			getval = getbascii;
620			putval = putbascii;
621			} else {
622			getval = getcascii;
623			putval = putcascii;
624			}
625			return;
626			case 'f': /* binary float */
627			if (brightonly) {
628			getval = getbfloat;
629			putval = putbfloat;
630			} else {
631			getval = getcfloat;
632			putval = putcfloat;
633			}
634			return;
635			case 'd': /* binary double */
636			if (brightonly) {
637			getval = getbdouble;
638			putval = putbdouble;
639			} else {
640			getval = getcdouble;
641			putval = putcdouble;
642			}
643			return;
644			case 'i': /* integer */
645			if (brightonly) {
646			getval = getbint;
647			putval = putbint;
648			} else {
649			getval = getcint;
650			putval = putcint;
651			}
652			return;
653			case 'b': /* byte */
654			if (brightonly) {
655			getval = getbbyte;
656			putval = putbbyte;
657			} else {
658			getval = getcbyte;
659			putval = putcbyte;
660			}
661			return;
662			}
663			}