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))

                                /* what to put out (also RED, GRN, BLU) */
#define  ALL            3
#define  BRIGHT         4

#define  brightonly     (putprim==BRIGHT)

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  putprim = ALL;             /* what to put out */

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

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

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

long  skipbytes = 0;            /* skip bytes in input? */

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;
FILE  *fin2 = NULL, *fin3 = NULL;       /* for other color channels */

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


main(argc, argv)
int  argc;
char  **argv;
{
        extern int  checkhead();
        extern long  atol();
        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 's':               /* skip bytes in header */
                                skipbytes = atol(argv[++i]);
                                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] == '-')
                                        expval *= d;
                                scalecolor(exposure, 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 */
                                putprim = argv[i][0] == '-' ? BRIGHT : ALL;
                                break;
                        case 'p':               /* put primary */
                                switch (argv[i][2]) {
                                case 'r': case 'R': putprim = RED; break;
                                case 'g': case 'G': putprim = GRN; break;
                                case 'b': case 'B': putprim = BLU; break;
                                default: goto unkopt;
                                }
                                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) {
                if ((fin = fopen(argv[i], "r")) == NULL) {
                        fprintf(stderr, "%s: can't open file \"%s\"\n",
                                                progname, argv[i]);
                        quit(1);
                }
                if (skipbytes && fseek(fin, skipbytes, 0))
                        goto seekerr;
                if (reverse && !brightonly && i == argc-3) {
                        if ((fin2 = fopen(argv[i+1], "r")) == NULL) {
                                fprintf(stderr, "%s: can't open file \"%s\"\n",
                                                progname, argv[i+1]);
                                quit(1);
                        }
                        if ((fin3 = fopen(argv[i+2], "r")) == NULL) {
                                fprintf(stderr, "%s: can't open file \"%s\"\n",
                                                progname, argv[i+2]);
                                quit(1);
                        }
                        if (skipbytes && (fseek(fin2, skipbytes, 0) ||
                                        fseek(fin3, skipbytes, 0)))
                                goto seekerr;
                } else if (i != argc-1)
                        fin = NULL;
        }
        if (fin == NULL) {
                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) {
                        if (checkheader(fin, fmtid, stdout) < 0) {
                                fprintf(stderr, "%s: wrong input format\n",
                                                progname);
                                quit(1);
                        }
                        if (fin2 != NULL) {
                                getheader(fin2, NULL, NULL);
                                getheader(fin3, NULL, NULL);
                        }
                } else
                        newheader("RADIANCE", stdout);
                                        /* get resolution */
                if ((resolution && !fgetsresolu(&picres, fin)) ||
                                picres.xr <= 0 || picres.yr <= 0) {
                        fprintf(stderr, "%s: missing resolution\n", progname);
                        quit(1);
                }
                if (resolution && fin2 != NULL) {
                        RESOLU  pres2;
                        if (!fgetsresolu(&pres2, fin2) ||
                                        pres2.or != picres.or ||
                                        pres2.xr != picres.xr ||
                                        pres2.yr != picres.yr ||
                                        !fgetsresolu(&pres2, fin3) ||
                                        pres2.or != picres.or ||
                                        pres2.xr != picres.xr ||
                                        pres2.yr != picres.yr) {
                                fprintf(stderr, "%s: resolution mismatch\n",
                                                progname);
                                quit(1);
                        }
                }
                                                /* add to header */
                printargs(i, argv, stdout);
                if (expval < .99 || expval > 1.01)
                        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 (expval < .99 || expval > 1.01)
                                fputexpos(expval, stdout);
                        fputformat(fmtid, stdout);
                        putchar('\n');
                }
                if (resolution)                 /* put resolution */
                        fputsresolu(&picres, stdout);
                pixtoval();
        }

        quit(0);
seekerr:
        fprintf(stderr, "%s: cannot skip %ld bytes on input\n",
                        progname, skipbytes);
        quit(1);
}


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

        if (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 (fin2 != NULL) {
                                        fscanf(fin2, "%*d %*d");
                                        fscanf(fin3, "%*d %*d");
                                }
                        }
                        if ((*getval)(scanln[x], fin, fin2, fin3) < 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, f1, f2, f3)      /* get an ascii color value from stream(s) */
COLOR  col;
FILE  *f1, *f2, *f3;
{
        double  vd[3];

        if (f2 == NULL) {
                if (fscanf(f1, "%lf %lf %lf", &vd[0], &vd[1], &vd[2]) != 3)
                        return(-1);
        } else {
                if (fscanf(f1, "%lf", &vd[0]) != 1 ||
                                fscanf(f2, "%lf", &vd[1]) != 1 ||
                                fscanf(f3, "%lf", &vd[2]) != 1)
                        return(-1);
        }
        setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
        return(0);
}


getcdouble(col, f1, f2, f3)     /* get a double color value from stream(s) */
COLOR  col;
FILE  *f1, *f2, *f3;
{
        double  vd[3];

        if (f2 == NULL) {
                if (fread((char *)vd, sizeof(double), 3, f1) != 3)
                        return(-1);
        } else {
                if (fread((char *)vd, sizeof(double), 1, f1) != 1 ||
                        fread((char *)(vd+1), sizeof(double), 1, f2) != 1 ||
                        fread((char *)(vd+2), sizeof(double), 1, f3) != 1)
                        return(-1);
        }
        setcolor(col, vd[rord[RED]], vd[rord[GRN]], vd[rord[BLU]]);
        return(0);
}


getcfloat(col, f1, f2, f3)      /* get a float color value from stream(s) */
COLOR  col;
FILE  *f1, *f2, *f3;
{
        float  vf[3];

        if (f2 == NULL) {
                if (fread((char *)vf, sizeof(float), 3, f1) != 3)
                        return(-1);
        } else {
                if (fread((char *)vf, sizeof(float), 1, f1) != 1 ||
                        fread((char *)(vf+1), sizeof(float), 1, f2) != 1 ||
                        fread((char *)(vf+2), sizeof(float), 1, f3) != 1)
                        return(-1);
        }
        setcolor(col, vf[rord[RED]], vf[rord[GRN]], vf[rord[BLU]]);
        return(0);
}


getcint(col, f1, f2, f3)        /* get an int color value from stream(s) */
COLOR  col;
FILE  *f1, *f2, *f3;
{
        int  vi[3];

        if (f2 == NULL) {
                if (fscanf(f1, "%d %d %d", &vi[0], &vi[1], &vi[2]) != 3)
                        return(-1);
        } else {
                if (fscanf(f1, "%d", &vi[0]) != 1 ||
                                fscanf(f2, "%d", &vi[1]) != 1 ||
                                fscanf(f3, "%d", &vi[2]) != 1)
                        return(-1);
        }
        setcolor(col, (vi[rord[RED]]+.5)/256.,
                        (vi[rord[GRN]]+.5)/256., (vi[rord[BLU]]+.5)/256.);
        return(0);
}


getcbyte(col, f1, f2, f3)       /* get a byte color value from stream(s) */
COLOR  col;
FILE  *f1, *f2, *f3;
{
        BYTE  vb[3];

        if (f2 == NULL) {
                if (fread((char *)vb, sizeof(BYTE), 3, f1) != 3)
                        return(-1);
        } else {
                if (fread((char *)vb, sizeof(BYTE), 1, f1) != 1 ||
                        fread((char *)(vb+1), sizeof(BYTE), 1, f2) != 1 ||
                        fread((char *)(vb+2), sizeof(BYTE), 1, f3) != 1)
                        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);
}


putpascii(col, fp)                      /* put an ascii primary to fp */
COLOR  col;
FILE  *fp;
{
        fprintf(fp, "%15.3e\n", colval(col,putprim));

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


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

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

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


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

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

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


putpint(col, fp)                        /* put an int primary to fp */
COLOR  col;
FILE  *fp;
{
        fprintf(fp, "%d\n", (int)(colval(col,putprim)*256.));

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


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

        i = colval(col,putprim)*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 (putprim == BRIGHT) {
                        getval = getbascii;
                        putval = putbascii;
                } else if (putprim != ALL) {
                        getval = getbascii;
                        putval = putpascii;
                } else {
                        getval = getcascii;
                        putval = putcascii;
                }
                return;
        case 'f':                                       /* binary float */
                if (putprim == BRIGHT) {
                        getval = getbfloat;
                        putval = putbfloat;
                } else if (putprim != ALL) {
                        getval = getbfloat;
                        putval = putpfloat;
                } else {
                        getval = getcfloat;
                        putval = putcfloat;
                }
                return;
        case 'd':                                       /* binary double */
                if (putprim == BRIGHT) {
                        getval = getbdouble;
                        putval = putbdouble;
                } else if (putprim != ALL) {
                        getval = getbdouble;
                        putval = putpdouble;
                } else {
                        getval = getcdouble;
                        putval = putcdouble;
                }
                return;
        case 'i':                                       /* integer */
                if (putprim == BRIGHT) {
                        getval = getbint;
                        putval = putbint;
                } else if (putprim != ALL) {
                        getval = getbint;
                        putval = putpint;
                } else {
                        getval = getcint;
                        putval = putcint;
                }
                return;
        case 'b':                                       /* byte */
                if (putprim == BRIGHT) {
                        getval = getbbyte;
                        putval = putbbyte;
                } else if (putprim != ALL) {
                        getval = getbbyte;
                        putval = putpbyte;
                } else {
                        getval = getcbyte;
                        putval = putcbyte;
                }
                return;
        }
}
Revision:	2.10
Committed:	Wed Jan 8 07:43:49 1997 UTC (27 years, 3 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.9:	+210 -31 lines
Log Message:	added routines for reading and writing separate RGB files added -pP (where P is one of 'R', 'G' or 'B' upper or lower case) added -s option to skip specified number of bytes on header