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  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 */
                        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);
                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);
                        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:	2.6
Committed:	Thu Jul 29 13:36:19 1993 UTC (30 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.5:	+2 -0 lines
Log Message:	made pvalue accept upper case X and Y for resolution spec. also
#	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	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	2.5	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	2.6	case 'X': /* x resolution */
131	greg	2.3	resolution = 0;
132	greg	1.8	if (argv[i][0] == '-')
133			picres.or \|= XDECR;
134			picres.xr = atoi(argv[++i]);
135	greg	1.1	break;
136			case 'y': /* y resolution */
137	greg	2.6	case 'Y': /* y resolution */
138	greg	2.3	resolution = 0;
139	greg	1.8	if (argv[i][0] == '-')
140			picres.or \|= YDECR;
141			if (picres.xr == 0)
142			picres.or \|= YMAJOR;
143			picres.yr = atoi(argv[++i]);
144	greg	1.1	break;
145			default:
146			unkopt:
147			fprintf(stderr, "%s: unknown option: %s\n",
148			progname, argv[i]);
149			quit(1);
150			break;
151			}
152			else
153			break;
154	greg	1.6	/* recognize special formats */
155			if (dataonly && format == 'b')
156			if (brightonly)
157			fmtid = "8-bit_grey";
158			else
159			fmtid = "24-bit_rgb";
160	greg	2.4	/* assign reverse ordering */
161			rord[ord[0]] = 0;
162			rord[ord[1]] = 1;
163			rord[ord[2]] = 2;
164			/* get input */
165	greg	1.1	if (i == argc) {
166			fin = stdin;
167			} else if (i == argc-1) {
168			if ((fin = fopen(argv[i], "r")) == NULL) {
169			fprintf(stderr, "%s: can't open file \"%s\"\n",
170			progname, argv[i]);
171			quit(1);
172			}
173			} else {
174			fprintf(stderr, "%s: bad # file arguments\n", progname);
175			quit(1);
176			}
177
178			set_io();
179
180			if (reverse) {
181	greg	2.5	#ifdef MSDOS
182			setmode(fileno(stdout), O_BINARY);
183			if (format != 'a' && format != 'i')
184			setmode(fileno(fin), O_BINARY);
185			#endif
186	greg	1.6	/* get header */
187			if (header && checkheader(fin, fmtid, stdout) < 0) {
188			fprintf(stderr, "%s: wrong input format\n", progname);
189			quit(1);
190			}
191	greg	2.3	/* get resolution */
192			if ((resolution && !fgetsresolu(&picres, fin)) \|\|
193			picres.xr <= 0 \|\| picres.yr <= 0) {
194			fprintf(stderr, "%s: missing resolution\n", progname);
195			quit(1);
196			}
197	greg	1.6	/* add to header */
198			printargs(i, argv, stdout);
199			fputformat(COLRFMT, stdout);
200	greg	1.8	putchar('\n');
201	greg	2.3	fputsresolu(&picres, stdout); /* always put resolution */
202	greg	1.1	valtopix();
203			} else {
204	greg	2.5	#ifdef MSDOS
205			setmode(fileno(fin), O_BINARY);
206			if (format != 'a' && format != 'i')
207			setmode(fileno(stdout), O_BINARY);
208			#endif
209	greg	1.1	/* get header */
210	greg	1.6	getheader(fin, checkhead, NULL);
211			if (wrongformat) {
212			fprintf(stderr, "%s: input not a Radiance picture\n",
213			progname);
214			quit(1);
215			}
216	greg	2.3	if (!fgetsresolu(&picres, fin)) {
217			fprintf(stderr, "%s: missing resolution\n", progname);
218			quit(1);
219			}
220	greg	1.1	if (header) {
221			printargs(i, argv, stdout);
222	greg	1.6	fputformat(fmtid, stdout);
223	greg	1.8	putchar('\n');
224	greg	1.1	}
225	greg	2.3	if (resolution) /* put resolution */
226			fputsresolu(&picres, stdout);
227	greg	1.1	pixtoval();
228			}
229
230			quit(0);
231			}
232
233
234			checkhead(line) /* deal with line from header */
235			char *line;
236			{
237	greg	1.6	char fmt[32];
238	greg	1.5	double d;
239			COLOR ctmp;
240
241	greg	1.6	if (isformat(line)) {
242			formatval(fmt, line);
243			wrongformat = strcmp(fmt, COLRFMT);
244			} else if (original && isexpos(line)) {
245	greg	1.5	d = 1.0/exposval(line);
246			scalecolor(exposure, d);
247	greg	1.6	} else if (original && iscolcor(line)) {
248	greg	1.5	colcorval(ctmp, line);
249	greg	1.7	setcolor(exposure, colval(exposure,RED)/colval(ctmp,RED),
250			colval(exposure,GRN)/colval(ctmp,GRN),
251			colval(exposure,BLU)/colval(ctmp,BLU));
252	greg	1.6	} else if (header)
253			fputs(line, stdout);
254	greg	1.1	}
255
256
257			pixtoval() /* convert picture to values */
258			{
259	greg	2.5	register COLOR *scanln;
260	greg	1.7	int dogamma;
261	greg	1.1	COLOR lastc;
262	greg	1.8	FLOAT hv[2];
263	greg	1.1	int y;
264			register int x;
265
266	greg	1.8	scanln = (COLOR )malloc(scanlen(&picres)sizeof(COLOR));
267	greg	1.1	if (scanln == NULL) {
268			fprintf(stderr, "%s: out of memory\n", progname);
269			quit(1);
270			}
271	greg	1.8	dogamma = gamcor < .95 \|\| gamcor > 1.05;
272	greg	1.1	setcolor(lastc, 0.0, 0.0, 0.0);
273	greg	1.8	for (y = 0; y < numscans(&picres); y++) {
274			if (freadscan(scanln, scanlen(&picres), fin) < 0) {
275	greg	1.1	fprintf(stderr, "%s: read error\n", progname);
276			quit(1);
277			}
278	greg	1.8	for (x = 0; x < scanlen(&picres); x++) {
279	greg	1.1	if (uniq)
280	greg	1.7	if ( colval(scanln[x],RED) ==
281			colval(lastc,RED) &&
282			colval(scanln[x],GRN) ==
283			colval(lastc,GRN) &&
284			colval(scanln[x],BLU) ==
285			colval(lastc,BLU) )
286	greg	1.1	continue;
287			else
288			copycolor(lastc, scanln[x]);
289			if (original)
290	greg	1.5	multcolor(scanln[x], exposure);
291	greg	1.7	if (dogamma)
292			setcolor(scanln[x],
293	greg	1.8	pow(colval(scanln[x],RED), 1.0/gamcor),
294			pow(colval(scanln[x],GRN), 1.0/gamcor),
295			pow(colval(scanln[x],BLU), 1.0/gamcor));
296			if (!dataonly) {
297			pix2loc(hv, &picres, x, y);
298			printf("%7d %7d ", (int)(hv[0]*picres.xr),
299			(int)(hv[1]*picres.yr));
300			}
301	greg	1.1	if ((*putval)(scanln[x], stdout) < 0) {
302			fprintf(stderr, "%s: write error\n", progname);
303			quit(1);
304			}
305			}
306			}
307			free((char *)scanln);
308			}
309
310
311			valtopix() /* convert values to a pixel file */
312			{
313	greg	1.7	int dogamma;
314	greg	2.5	register COLOR *scanln;
315	greg	1.1	int y;
316			register int x;
317
318	greg	1.8	scanln = (COLOR )malloc(scanlen(&picres)sizeof(COLOR));
319	greg	1.1	if (scanln == NULL) {
320			fprintf(stderr, "%s: out of memory\n", progname);
321			quit(1);
322			}
323	greg	1.8	dogamma = gamcor < .95 \|\| gamcor > 1.05;
324			for (y = 0; y < numscans(&picres); y++) {
325			for (x = 0; x < scanlen(&picres); x++) {
326	greg	1.1	if (!dataonly)
327			fscanf(fin, "%d %d");
328			if ((*getval)(scanln[x], fin) < 0) {
329			fprintf(stderr, "%s: read error\n", progname);
330			quit(1);
331			}
332	greg	1.7	if (dogamma)
333			setcolor(scanln[x],
334	greg	1.8	pow(colval(scanln[x],RED), gamcor),
335			pow(colval(scanln[x],GRN), gamcor),
336			pow(colval(scanln[x],BLU), gamcor));
337	greg	1.1	}
338	greg	1.8	if (fwritescan(scanln, scanlen(&picres), stdout) < 0) {
339	greg	1.1	fprintf(stderr, "%s: write error\n", progname);
340			quit(1);
341			}
342			}
343			free((char *)scanln);
344			}
345
346
347			quit(code)
348			int code;
349			{
350			exit(code);
351			}
352
353
354			getcascii(col, fp) /* get an ascii color value from fp */
355			COLOR col;
356			FILE *fp;
357			{
358	greg	2.5	double vd[3];
359	greg	1.1
360			if (fscanf(fp, "%lf %lf %lf", &vd[0], &vd[1], &vd[2]) != 3)
361			return(-1);
362	greg	2.4	setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
363	greg	1.1	return(0);
364			}
365
366
367			getcdouble(col, fp) /* get a double color value from fp */
368			COLOR col;
369			FILE *fp;
370			{
371	greg	2.5	double vd[3];
372	greg	1.1
373	greg	1.4	if (fread((char *)vd, sizeof(double), 3, fp) != 3)
374	greg	1.1	return(-1);
375	greg	2.4	setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
376	greg	1.1	return(0);
377			}
378
379
380			getcfloat(col, fp) /* get a float color value from fp */
381			COLOR col;
382			FILE *fp;
383			{
384			float vf[3];
385
386	greg	1.4	if (fread((char *)vf, sizeof(float), 3, fp) != 3)
387	greg	1.1	return(-1);
388	greg	2.4	setcolor(col, vf[rord[RED]], vf[rord[GRN]], vf[rord[BLU]]);
389	greg	1.1	return(0);
390			}
391
392
393			getcint(col, fp) /* get an int color value from fp */
394			COLOR col;
395			FILE *fp;
396			{
397			int vi[3];
398
399			if (fscanf(fp, "%d %d %d", &vi[0], &vi[1], &vi[2]) != 3)
400			return(-1);
401	greg	2.4	setcolor(col, (vi[rord[RED]]+.5)/256.,
402			(vi[rord[GRN]]+.5)/256., (vi[rord[BLU]]+.5)/256.);
403	greg	1.1	return(0);
404			}
405
406
407			getcbyte(col, fp) /* get a byte color value from fp */
408			COLOR col;
409			FILE *fp;
410			{
411			BYTE vb[3];
412
413	greg	1.4	if (fread((char *)vb, sizeof(BYTE), 3, fp) != 3)
414	greg	1.1	return(-1);
415	greg	2.4	setcolor(col, (vb[rord[RED]]+.5)/256.,
416			(vb[rord[GRN]]+.5)/256., (vb[rord[BLU]]+.5)/256.);
417	greg	1.1	return(0);
418			}
419
420
421			getbascii(col, fp) /* get an ascii brightness value from fp */
422			COLOR col;
423			FILE *fp;
424			{
425	greg	2.5	double vd;
426	greg	1.1
427			if (fscanf(fp, "%lf", &vd) != 1)
428			return(-1);
429			setcolor(col, vd, vd, vd);
430			return(0);
431			}
432
433
434			getbdouble(col, fp) /* get a double brightness value from fp */
435			COLOR col;
436			FILE *fp;
437			{
438	greg	2.5	double vd;
439	greg	1.1
440	greg	1.4	if (fread((char *)&vd, sizeof(double), 1, fp) != 1)
441	greg	1.1	return(-1);
442			setcolor(col, vd, vd, vd);
443			return(0);
444			}
445
446
447			getbfloat(col, fp) /* get a float brightness value from fp */
448			COLOR col;
449			FILE *fp;
450			{
451			float vf;
452
453	greg	1.4	if (fread((char *)&vf, sizeof(float), 1, fp) != 1)
454	greg	1.1	return(-1);
455			setcolor(col, vf, vf, vf);
456			return(0);
457			}
458
459
460			getbint(col, fp) /* get an int brightness value from fp */
461			COLOR col;
462			FILE *fp;
463			{
464			int vi;
465	greg	2.5	double d;
466	greg	1.1
467			if (fscanf(fp, "%d", &vi) != 1)
468			return(-1);
469			d = (vi+.5)/256.;
470			setcolor(col, d, d, d);
471			return(0);
472			}
473
474
475			getbbyte(col, fp) /* get a byte brightness value from fp */
476			COLOR col;
477			FILE *fp;
478			{
479			BYTE vb;
480	greg	2.5	double d;
481	greg	1.1
482	greg	1.4	if (fread((char *)&vb, sizeof(BYTE), 1, fp) != 1)
483	greg	1.1	return(-1);
484			d = (vb+.5)/256.;
485			setcolor(col, d, d, d);
486			return(0);
487			}
488
489
490			putcascii(col, fp) /* put an ascii color to fp */
491			COLOR col;
492			FILE *fp;
493			{
494			fprintf(fp, "%15.3e %15.3e %15.3e\n",
495	greg	2.4	colval(col,ord[0]),
496			colval(col,ord[1]),
497			colval(col,ord[2]));
498	greg	1.1
499			return(ferror(fp) ? -1 : 0);
500			}
501
502
503			putcfloat(col, fp) /* put a float color to fp */
504			COLOR col;
505			FILE *fp;
506			{
507			float vf[3];
508
509	greg	2.4	vf[0] = colval(col,ord[0]);
510			vf[1] = colval(col,ord[1]);
511			vf[2] = colval(col,ord[2]);
512	greg	1.4	fwrite((char *)vf, sizeof(float), 3, fp);
513	greg	1.1
514			return(ferror(fp) ? -1 : 0);
515			}
516
517
518			putcdouble(col, fp) /* put a double color to fp */
519			COLOR col;
520			FILE *fp;
521			{
522	greg	2.5	double vd[3];
523	greg	1.1
524	greg	2.4	vd[0] = colval(col,ord[0]);
525			vd[1] = colval(col,ord[1]);
526			vd[2] = colval(col,ord[2]);
527	greg	1.4	fwrite((char *)vd, sizeof(double), 3, fp);
528	greg	1.1
529			return(ferror(fp) ? -1 : 0);
530			}
531
532
533			putcint(col, fp) /* put an int color to fp */
534			COLOR col;
535			FILE *fp;
536			{
537			fprintf(fp, "%d %d %d\n",
538	greg	2.4	(int)(colval(col,ord[0])*256.),
539			(int)(colval(col,ord[1])*256.),
540			(int)(colval(col,ord[2])*256.));
541	greg	1.1
542			return(ferror(fp) ? -1 : 0);
543			}
544
545
546			putcbyte(col, fp) /* put a byte color to fp */
547			COLOR col;
548			FILE *fp;
549			{
550			register int i;
551			BYTE vb[3];
552
553	greg	2.4	i = colval(col,ord[0])*256.;
554	greg	1.1	vb[0] = min(i,255);
555	greg	2.4	i = colval(col,ord[1])*256.;
556	greg	1.1	vb[1] = min(i,255);
557	greg	2.4	i = colval(col,ord[2])*256.;
558	greg	1.1	vb[2] = min(i,255);
559	greg	1.4	fwrite((char *)vb, sizeof(BYTE), 3, fp);
560	greg	1.1
561			return(ferror(fp) ? -1 : 0);
562			}
563
564
565			putbascii(col, fp) /* put an ascii brightness to fp */
566			COLOR col;
567			FILE *fp;
568			{
569			fprintf(fp, "%15.3e\n", bright(col));
570
571			return(ferror(fp) ? -1 : 0);
572			}
573
574
575			putbfloat(col, fp) /* put a float brightness to fp */
576			COLOR col;
577			FILE *fp;
578			{
579			float vf;
580
581			vf = bright(col);
582	greg	1.4	fwrite((char *)&vf, sizeof(float), 1, fp);
583	greg	1.1
584			return(ferror(fp) ? -1 : 0);
585			}
586
587
588			putbdouble(col, fp) /* put a double brightness to fp */
589			COLOR col;
590			FILE *fp;
591			{
592	greg	2.5	double vd;
593	greg	1.1
594			vd = bright(col);
595	greg	1.4	fwrite((char *)&vd, sizeof(double), 1, fp);
596	greg	1.1
597			return(ferror(fp) ? -1 : 0);
598			}
599
600
601			putbint(col, fp) /* put an int brightness to fp */
602			COLOR col;
603			FILE *fp;
604			{
605			fprintf(fp, "%d\n", (int)(bright(col)*256.));
606
607			return(ferror(fp) ? -1 : 0);
608			}
609
610
611			putbbyte(col, fp) /* put a byte brightness to fp */
612			COLOR col;
613			FILE *fp;
614			{
615			register int i;
616			BYTE vb;
617
618			i = bright(col)*256.;
619			vb = min(i,255);
620	greg	1.4	fwrite((char *)&vb, sizeof(BYTE), 1, fp);
621	greg	1.1
622			return(ferror(fp) ? -1 : 0);
623			}
624
625
626			set_io() /* set put and get functions */
627			{
628			switch (format) {
629			case 'a': /* ascii */
630			if (brightonly) {
631			getval = getbascii;
632			putval = putbascii;
633			} else {
634			getval = getcascii;
635			putval = putcascii;
636			}
637			return;
638			case 'f': /* binary float */
639			if (brightonly) {
640			getval = getbfloat;
641			putval = putbfloat;
642			} else {
643			getval = getcfloat;
644			putval = putcfloat;
645			}
646			return;
647			case 'd': /* binary double */
648			if (brightonly) {
649			getval = getbdouble;
650			putval = putbdouble;
651			} else {
652			getval = getcdouble;
653			putval = putcdouble;
654			}
655			return;
656			case 'i': /* integer */
657			if (brightonly) {
658			getval = getbint;
659			putval = putbint;
660			} else {
661			getval = getcint;
662			putval = putcint;
663			}
664			return;
665			case 'b': /* byte */
666			if (brightonly) {
667			getval = getbbyte;
668			putval = putbbyte;
669			} else {
670			getval = getcbyte;
671			putval = putcbyte;
672			}
673			return;
674			}
675			}