src/px/pfilt.c

#ifndef lint
static const char RCSid[] = "$Id: pfilt.c,v 2.36 2023/12/08 17:56:26 greg Exp $";
#endif
/*
 *  pfilt.c - program to post-process picture file.
 *
 *     9/26/85
 *     6/23/93  Added additional buffers for value spreading
 */

#include  "copyright.h"

#include  <signal.h>
#include  "pfilt.h"
#include  "platform.h"
#include  "paths.h"
#include  "view.h"

#define  FEQ(a,b)       ((a) >= .98*(b) && (a) <= 1.02*(b))

double   CHECKRAD = 2.0;        /* radius to check for filtering */

#define  THRESHRAD      5.0     /* maximum sample spread in output */

COLOR  exposure = WHTCOLOR;     /* exposure for the frame */

double  rad = 0.0;              /* output pixel radius for filtering */

double  thresh = 0.0;           /* maximum contribution for subpixel */

int  nrows = 0;                 /* number of rows for output */
int  ncols = 0;                 /* number of columns for output */

double  x_c = 1.0;              /* ratio of output x size to input */
double  y_r = 1.0;              /* ratio of output y size to input */

int  singlepass = 0;            /* true means skip first pass */

int  avghot = 0;                /* true means average in bright spots */

double  hotlvl = 100.0;         /* level considered "hot" */

int  npts = 0;                  /* (half) number of points for stars */

double  spread = 1e-4;          /* spread for star points */

char  *tfname = NULL;

char  template[] = TEMPLATE;

char  *lampdat = "lamp.tab";    /* lamp data file */

int  order;                     /* scanline ordering of input */
int  xres, yres;                /* resolution of input */
double  inpaspect = 1.0;        /* pixel aspect ratio of input */
int  correctaspect = 0;         /* aspect ratio correction? */

int  wrongformat = 0;

VIEW  ourview = STDVIEW;
int  gotview = 0;
int  wrapfilt = 0;              /* wrap filter horizontally? */

int  estatus = 0;               /* exit status (for non-fatal errors) */

int  xrad;                      /* x search radius */
int  yrad;                      /* y search radius */
int  xbrad;                     /* x box size */
int  ybrad;                     /* y box size */

int  barsize;                   /* size of input scan bar */
COLORV  **scanin;               /* input scan bar */
COLORV  *scanout;               /* output scan line */
COLORV  **scoutbar;             /* output scan bar (if thresh > 0) */
float  **greybar;               /* grey-averaged input values */
int  obarsize = 0;              /* size of output scan bar */
int  orad = 0;                  /* output window radius */

char  *progname;

static gethfunc headline;
static void copyfile(FILE  *in, FILE  *out);
static void pass1(FILE  *in);
static void pass2(FILE  *in);
static void scan2init(void);
static void scan2sync(int  r);
static void scan2flush(void);


int
main(
        int  argc,
        char  **argv
)
{
        FILE  *fin;
        float  *lampcolor;
        char  *lamptype = NULL;
        long  fpos;
        double  outaspect = 0.0;
        double  d;
        int  i, j;
        SET_DEFAULT_BINARY();
        SET_FILE_BINARY(stdin);
        SET_FILE_BINARY(stdout);
        if (signal(SIGINT, quit) == SIG_IGN)
                signal(SIGINT, SIG_IGN);
#ifdef SIGHUP
        if (signal(SIGHUP, quit) == SIG_IGN)
                signal(SIGHUP, SIG_IGN);
#endif
        signal(SIGTERM, quit);
#ifdef SIGPIPE
        signal(SIGPIPE, quit);
#endif
#ifdef  SIGXCPU
        signal(SIGXCPU, quit);
        signal(SIGXFSZ, quit);
#endif

        progname = argv[0] = fixargv0(argv[0]);

        for (i = 1; i < argc; i++)
                if (argv[i][0] == '-')
                        switch (argv[i][1]) {
                        case 'x':
                                i++;
                                if (argv[i][0] == '/') {
                                        x_c = 1.0/atof(argv[i]+1);
                                        ncols = 0;
                                } else
                                        ncols = atoi(argv[i]);
                                break;
                        case 'y':
                                i++;
                                if (argv[i][0] == '/') {
                                        y_r = 1.0/atof(argv[i]+1);
                                        nrows = 0;
                                } else
                                        nrows = atoi(argv[i]);
                                break;
                        case 'c':
                                correctaspect = !correctaspect;
                                break;
                        case 'p':
                                i++;
                                outaspect = atof(argv[i]);
                                break;
                        case 'e':
                                if (argv[i+1][0] == '+' || argv[i+1][0] == '-')
                                        d = pow(2.0, atof(argv[i+1]));
                                else
                                        d = atof(argv[i+1]);
                                if (d < 1e-20 || d > 1e20) {
                                        fprintf(stderr,
                                                "%s: exposure out of range\n",
                                                        argv[0]);
                                        quit(1);
                                }
                                switch (argv[i][2]) {
                                case '\0':
                                        scalecolor(exposure, d);
                                        break;
                                case 'r':
                                        colval(exposure,RED) *= d;
                                        break;
                                case 'g':
                                        colval(exposure,GRN) *= d;
                                        break;
                                case 'b':
                                        colval(exposure,BLU) *= d;
                                        break;
                                default:
                                        goto badopt;
                                }
                                i++;
                                break;
                        case 'f':
                                lampdat = argv[++i];
                                break;
                        case 't':
                                lamptype = argv[++i];
                                break;
                        case '1':
                                singlepass = 1;
                                break;
                        case '2':
                                singlepass = 0;
                                break;
                        case 'n':
                                npts = atoi(argv[++i]) / 2;
                                break;
                        case 's':
                                spread = atof(argv[++i]);
                                break;
                        case 'a':
                                avghot = !avghot;
                                break;
                        case 'h':
                                hotlvl = atof(argv[++i]);
                                break;
                        case 'r':
                                rad = atof(argv[++i]);
                                break;
                        case 'm':
                                thresh = atof(argv[++i]);
                                if (rad <= FTINY)
                                        rad = 0.6;
                                break;
                        case 'b':
                                rad = thresh = 0.0;
                                break;
                        default:;
                        badopt:
                                fprintf(stderr, "%s: unknown option: %s\n",
                                                progname, argv[i]);
                                quit(1);
                                break;
                        }
                else
                        break;
                                        /* get lamp data (if necessary) */
        if (lamptype != NULL) {
                if (loadlamps(lampdat) < 0)
                        quit(1);
                if ((lampcolor = matchlamp(lamptype)) == NULL) {
                        fprintf(stderr, "%s: unknown lamp type\n", lamptype);
                        quit(1);
                }
                for (j = 0; j < 3; j++)
                        if (lampcolor[j] > 1e-4)
                                colval(exposure,j) /= lampcolor[j];
                freelamps();
        }
                                        /* open input file */
        if (i == argc) {
                if (singlepass)
                        fin = stdin;
                else {
                        tfname = mktemp(template);
                        if ((fin = fopen(tfname, "w+")) == NULL) {
                                fprintf(stderr, "%s: can't create ", progname);
                                fprintf(stderr, "temp file \"%s\"\n", tfname);
                                quit(1);
                        }
                        copyfile(stdin, fin);
                        if (fseek(fin, 0L, 0) == -1) {
                                fprintf(stderr, "%s: seek fail\n", progname);
                                quit(1);
                        }
                }
        } 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);
        }
                                        /* get header */
        getheader(fin, headline, NULL);
        if (wrongformat) {
                fprintf(stderr, "%s: input must be a Radiance picture\n",
                                progname);
                quit(1);
        }
        if (setspectrsamp(CNDX, WLPART) < 0) {
                fprintf(stderr, "%s: bad number of components\n", progname);
                quit(1);
        }
                                        /* add new header info. */
        printargs(i, argv, stdout);
                                        /* get picture size */
        if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
                fprintf(stderr, "%s: bad picture size\n", progname);
                quit(1);
        }
        if (!(order & YMAJOR))
                inpaspect = 1.0/inpaspect;
                                        /* wrap around for cylindrical view? */
        wrapfilt = gotview && ourview.type == VT_CYL &&
                        ourview.horiz >= 360.-FTINY && order & YMAJOR;
                                        /* compute output resolution */
        if (ncols <= 0)
                ncols = x_c*xres + .5;
        if (nrows <= 0)
                nrows = y_r*yres + .5;
        if (outaspect > .01) {
                d = inpaspect * yres/xres / outaspect;
                if (d * ncols > nrows)
                        ncols = nrows / d;
                else
                        nrows = ncols * d;
        }
        x_c = (double)ncols/xres;
        y_r = (double)nrows/yres;

        if (singlepass) {               /* skip exposure, etc. */
                pass1default();
                pass2(fin);
                quit(0);
        }

        fpos = ftell(fin);              /* save input file position */
        
        pass1(fin);

        if (fseek(fin, fpos, 0) == -1) {
                fprintf(stderr, "%s: seek fail\n", progname);
                quit(1);
        }
        pass2(fin);

        quit(estatus);
        return estatus; /* pro forma return */
}


static double
rgb_bright(
        SCOLOR  clr
)
{
        return(bright(clr));
}


static double
xyz_bright(
        SCOLOR  clr
)
{
        return(colval(clr,CIEY));
}


static double
spec_bright(
        SCOLOR  clr
)
{
        return(pbright(clr));
}


brightfunc_t *ourbright = rgb_bright;

static int
headline(                               /* process line from header */
        char    *s,
        void    *p
)
{
        char  fmt[MAXFMTLEN];

        fputs(s, stdout);               /* copy to output */
        if (isaspect(s))                /* get aspect ratio */
                inpaspect *= aspectval(s);
        else if (isexpos(s))            /* get exposure */
                hotlvl *= exposval(s);
        else if (isncomp(s))            /* get #components (spectral) */
                NCSAMP = ncompval(s);
        else if (iswlsplit(s))          /* get wavelength partitions */
                wlsplitval(WLPART, s);
        else if (formatval(fmt, s)) {   /* get format */
                wrongformat = 0;
                if (!strcmp(COLRFMT, fmt))
                        ourbright = rgb_bright;
                else if (!strcmp(CIEFMT, fmt))
                        ourbright = xyz_bright;
                else if (!strcmp(SPECFMT, fmt))
                        ourbright = spec_bright;
                else
                        wrongformat = !globmatch(PICFMT, fmt);
        } else if (isview(s) && sscanview(&ourview, s) > 0)
                gotview++;
        return(0);
}


static void
copyfile(                       /* copy a file */
        FILE  *in,
        FILE  *out
)
{
        int  c;

        while ((c = getc(in)) != EOF)
                putc(c, out);

        if (ferror(out)) {
                fprintf(stderr, "%s: write error in copyfile\n", progname);
                quit(1);
        }
}


static void
pass1(                          /* first pass of picture file */
        FILE  *in
)
{
        int  i;
        COLORV  *scan;

        pass1init();

        scan = (COLORV *)malloc(xres*NCSAMP*sizeof(COLORV));
        if (scan == NULL) {
                fprintf(stderr, "%s: out of memory\n", progname);
                quit(1);
        }
        for (i = 0; i < yres; i++) {
                if (freadsscan(scan, NCSAMP, xres, in) < 0) {
                        nrows = (long)nrows * i / yres; /* adjust frame */
                        if (nrows <= 0) {
                                fprintf(stderr, "%s: empty frame\n", progname);
                                quit(1);
                        }
                        fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
                                        progname, (int)(100L*i/yres));
                        yres = i;
                        y_r = (double)nrows/yres;
                        estatus++;
                        break;
                }
                pass1scan(scan, i);
        }
        free(scan);
}


static void
pass2(                  /* last pass on file, write to stdout */
        FILE  *in
)
{
        int  yread;
        int  ycent, xcent;
        int  r, c;
        
        pass2init();
        scan2init();
        yread = 0;
        for (r = 0; r < nrows; r++) {
                ycent = (r+.5)*yres/nrows;
                while (yread <= ycent+yrad) {
                        if (yread < yres) {
                                if (freadsscan(scanin[yread%barsize],
                                                NCSAMP, xres, in) < 0) {
                                        fprintf(stderr,
                                                "%s: truncated input (y=%d)\n",
                                                progname, yres-1-yread);
                                        quit(1);
                                }
                                pass2scan(scanin[yread%barsize], yread);
                        }
                        yread++;
                }
                if (obarsize > 0)
                        scan2sync(r);
                for (c = 0; c < ncols; c++) {
                        xcent = (c+.5)*xres/ncols;
                        if (thresh > FTINY)
                                dothresh(xcent, ycent, c, r);
                        else if (rad > FTINY)
                                dogauss(scanout+c*NCSAMP, xcent, ycent, c, r);
                        else
                                dobox(scanout+c*NCSAMP, xcent, ycent, c, r);
                }
                if (scanout != NULL && fwritesscan(scanout, NCSAMP, ncols, stdout) < 0) {
                        fprintf(stderr, "%s: write error in pass2\n", progname);
                        quit(1);
                }
        }
                                        /* skip leftover input */
        while (yread < yres) {
                if (freadsscan(scanin[0], NCSAMP, xres, in) < 0)
                        break;
                yread++;
        }
        scan2flush();                   /* flush output */
}


static void
scan2init(void)                 /* prepare scanline arrays */
{
        COLOR   ctmp;
        double  d;
        int  i;

        xbrad = xres/ncols/2 + 1;
        ybrad = yres/nrows/2 + 1;
        if (rad > FTINY) {
                if (nrows >= yres && ncols >= xres)
                        rad *= (y_r + x_c)/2.0;

                if (thresh > FTINY) {
                        orad = CHECKRAD*THRESHRAD*rad + 1;
                        xrad = orad/x_c + xbrad;
                        yrad = orad/y_r + ybrad;
                        obarsize = 2*orad + 1;
                } else {
                        xrad = CHECKRAD*rad/x_c + 1;
                        yrad = CHECKRAD*rad/y_r + 1;
                }
                initmask();             /* initialize filter table */
        } else {
                xrad = xbrad;
                yrad = ybrad;
        }
        barsize = 2*yrad + 1;
        scanin = (COLORV **)malloc(barsize*sizeof(COLORV *));
        if (scanin == NULL)
                goto memerr;
        for (i = 0; i < barsize; i++) {
                scanin[i] = (COLORV *)malloc(xres*NCSAMP*sizeof(COLORV));
                if (scanin[i] == NULL)
                        goto memerr;
        }
        if (obarsize > 0) {
                scoutbar = (COLORV **)malloc(obarsize*sizeof(COLORV *));
                greybar = (float **)malloc(obarsize*sizeof(float *));
                if ((scoutbar == NULL) | (greybar == NULL))
                        goto memerr;
                for (i = 0; i < obarsize; i++) {
                        scoutbar[i] = (COLORV *)malloc(ncols*NCSAMP*sizeof(COLORV));
                        greybar[i] = (float *)malloc(ncols*sizeof(float));
                        if ((scoutbar[i] == NULL) | (greybar[i] == NULL))
                                goto memerr;
                }
        } else {
                scanout = (COLORV *)malloc(ncols*NCSAMP*sizeof(COLORV));
                if (scanout == NULL)
                        goto memerr;
        }
                                        /* record pixel aspect ratio */
        if (!correctaspect) {
                d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
                if (!FEQ(d,1.0))
                        fputaspect(d, stdout);
        }
                                        /* record exposure */
        d = bright(exposure);
        if (!FEQ(d,1.0))
                fputexpos(d, stdout);
                                        /* record color correction */
        copycolor(ctmp, exposure);
        scalecolor(ctmp, 1.0/d);
        if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) ||
                        !FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
                fputcolcor(ctmp, stdout);
        printf("\n");
                                        /* write out resolution */
        fputresolu(order, ncols, nrows, stdout);
        return;
memerr:
        fprintf(stderr, "%s: out of memory\n", progname);
        quit(1);
}


static void
scan2sync(                      /* synchronize grey averages and output scan */
        int  r
)
{
        static int  nextrow = 0;
        SCOLOR  ctmp;
        int  ybot;
        int  c;
                                        /* average input scanlines */
        while (nextrow <= r+orad && nextrow < nrows) {
                ybot = (nextrow+.5)*yres/nrows;
                for (c = 0; c < ncols; c++) {
                        dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow);
                        greybar[nextrow%obarsize][c] = (*ourbright)(ctmp);
                }
                                        /* and zero output scanline */
                memset(scoutbar[nextrow%obarsize], 0, ncols*NCSAMP*sizeof(COLORV));
                nextrow++;
        }
                                        /* point to top scanline for output */
        if (r-orad >= 0)
                scanout = scoutbar[(r-orad)%obarsize];
        else
                scanout = NULL;
}


static void
scan2flush(void)                        /* flush output buffer */
{
        int  r;

        for (r = nrows-orad; r < nrows; r++)
                if (fwritesscan(scoutbar[r%obarsize], NCSAMP, ncols, stdout) < 0)
                        break;
        if (fflush(stdout) < 0) {
                fprintf(stderr, "%s: write error at end of pass2\n", progname);
                quit(1);
        }
}


void
quit(code)              /* remove temporary file and exit */
int  code;
{
        if (tfname != NULL)
                unlink(tfname);
        exit(code);
}
Revision:	2.37
Committed:	Sat Dec 9 02:33:14 2023 UTC (4 months, 2 weeks ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.36:	+2 -2 lines
Log Message:	fix(pfilt): Need to set primary channels for pbright() to work properly
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.37	static const char RCSid[] = "$Id: pfilt.c,v 2.36 2023/12/08 17:56:26 greg Exp $";
3	greg	1.1	#endif
4			/*
5			* pfilt.c - program to post-process picture file.
6			*
7			* 9/26/85
8	greg	2.9	* 6/23/93 Added additional buffers for value spreading
9	greg	1.1	*/
10
11	schorsch	2.25	#include "copyright.h"
12
13	greg	1.1	#include <signal.h>
14	greg	2.35	#include "pfilt.h"
15	greg	2.27	#include "platform.h"
16	greg	2.35	#include "paths.h"
17	greg	2.17	#include "view.h"
18	greg	1.1
19	greg	2.4	#define FEQ(a,b) ((a) >= .98(b) && (a) <= 1.02(b))
20	greg	1.15
21	greg	2.22	double CHECKRAD = 2.0; /* radius to check for filtering */
22	greg	1.1
23	greg	2.9	#define THRESHRAD 5.0 /* maximum sample spread in output */
24
25	greg	1.1	COLOR exposure = WHTCOLOR; /* exposure for the frame */
26
27	greg	2.4	double rad = 0.0; /* output pixel radius for filtering */
28	greg	1.1
29	greg	2.9	double thresh = 0.0; /* maximum contribution for subpixel */
30
31	greg	1.1	int nrows = 0; /* number of rows for output */
32			int ncols = 0; /* number of columns for output */
33
34	greg	2.4	double x_c = 1.0; /* ratio of output x size to input */
35			double y_r = 1.0; /* ratio of output y size to input */
36	greg	1.2
37	greg	1.1	int singlepass = 0; /* true means skip first pass */
38
39			int avghot = 0; /* true means average in bright spots */
40
41	greg	2.8	double hotlvl = 100.0; /* level considered "hot" */
42	greg	1.1
43			int npts = 0; /* (half) number of points for stars */
44
45	greg	2.4	double spread = 1e-4; /* spread for star points */
46	greg	1.1
47			char *tfname = NULL;
48
49	greg	2.11	char template[] = TEMPLATE;
50
51	greg	1.13	char lampdat = "lamp.tab"; / lamp data file */
52
53	greg	1.19	int order; /* scanline ordering of input */
54	greg	1.1	int xres, yres; /* resolution of input */
55	greg	2.4	double inpaspect = 1.0; /* pixel aspect ratio of input */
56	greg	1.12	int correctaspect = 0; /* aspect ratio correction? */
57	greg	1.1
58	greg	1.16	int wrongformat = 0;
59
60	greg	2.17	VIEW ourview = STDVIEW;
61			int gotview = 0;
62			int wrapfilt = 0; /* wrap filter horizontally? */
63
64	greg	2.18	int estatus = 0; /* exit status (for non-fatal errors) */
65
66	greg	2.9	int xrad; /* x search radius */
67			int yrad; /* y search radius */
68			int xbrad; /* x box size */
69			int ybrad; /* y box size */
70	greg	1.1
71			int barsize; /* size of input scan bar */
72	greg	2.36	COLORV *scanin; / input scan bar */
73			COLORV scanout; / output scan line */
74			COLORV *scoutbar; / output scan bar (if thresh > 0) */
75	greg	2.9	float *greybar; / grey-averaged input values */
76			int obarsize = 0; /* size of output scan bar */
77			int orad = 0; /* output window radius */
78	greg	1.1
79			char *progname;
80
81	schorsch	2.28	static gethfunc headline;
82	schorsch	2.29	static void copyfile(FILE in, FILE out);
83			static void pass1(FILE *in);
84			static void pass2(FILE *in);
85			static void scan2init(void);
86			static void scan2sync(int r);
87			static void scan2flush(void);
88	schorsch	2.28
89	greg	1.1
90	schorsch	2.29	int
91			main(
92			int argc,
93			char **argv
94			)
95	greg	1.1	{
96			FILE *fin;
97	greg	1.13	float *lampcolor;
98			char *lamptype = NULL;
99	greg	1.1	long fpos;
100	greg	2.4	double outaspect = 0.0;
101			double d;
102	greg	2.13	int i, j;
103	schorsch	2.23	SET_DEFAULT_BINARY();
104			SET_FILE_BINARY(stdin);
105			SET_FILE_BINARY(stdout);
106	greg	1.1	if (signal(SIGINT, quit) == SIG_IGN)
107			signal(SIGINT, SIG_IGN);
108	schorsch	2.24	#ifdef SIGHUP
109	greg	1.1	if (signal(SIGHUP, quit) == SIG_IGN)
110	greg	2.11	signal(SIGHUP, SIG_IGN);
111	schorsch	2.24	#endif
112	greg	1.1	signal(SIGTERM, quit);
113	schorsch	2.24	#ifdef SIGPIPE
114	greg	1.1	signal(SIGPIPE, quit);
115	schorsch	2.24	#endif
116	greg	2.4	#ifdef SIGXCPU
117	greg	1.1	signal(SIGXCPU, quit);
118			signal(SIGXFSZ, quit);
119			#endif
120
121	greg	2.6	progname = argv[0] = fixargv0(argv[0]);
122	greg	1.1
123			for (i = 1; i < argc; i++)
124			if (argv[i][0] == '-')
125			switch (argv[i][1]) {
126			case 'x':
127	greg	1.3	i++;
128	greg	1.5	if (argv[i][0] == '/') {
129	greg	1.4	x_c = 1.0/atof(argv[i]+1);
130	greg	1.5	ncols = 0;
131			} else
132	greg	1.3	ncols = atoi(argv[i]);
133	greg	1.1	break;
134			case 'y':
135	greg	1.3	i++;
136	greg	1.5	if (argv[i][0] == '/') {
137	greg	1.4	y_r = 1.0/atof(argv[i]+1);
138	greg	1.5	nrows = 0;
139			} else
140	greg	1.3	nrows = atoi(argv[i]);
141	greg	1.1	break;
142	greg	1.12	case 'c':
143			correctaspect = !correctaspect;
144			break;
145	greg	1.9	case 'p':
146			i++;
147			outaspect = atof(argv[i]);
148			break;
149	greg	1.1	case 'e':
150			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
151			d = pow(2.0, atof(argv[i+1]));
152			else
153			d = atof(argv[i+1]);
154	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
155			fprintf(stderr,
156			"%s: exposure out of range\n",
157			argv[0]);
158	greg	2.18	quit(1);
159	greg	1.15	}
160	greg	1.1	switch (argv[i][2]) {
161			case '\0':
162			scalecolor(exposure, d);
163			break;
164			case 'r':
165			colval(exposure,RED) *= d;
166			break;
167			case 'g':
168			colval(exposure,GRN) *= d;
169			break;
170			case 'b':
171			colval(exposure,BLU) *= d;
172			break;
173			default:
174			goto badopt;
175			}
176			i++;
177			break;
178	greg	1.13	case 'f':
179			lampdat = argv[++i];
180			break;
181			case 't':
182			lamptype = argv[++i];
183			break;
184	greg	1.1	case '1':
185			singlepass = 1;
186			break;
187	greg	1.6	case '2':
188			singlepass = 0;
189			break;
190	greg	1.9	case 'n':
191	greg	1.1	npts = atoi(argv[++i]) / 2;
192			break;
193			case 's':
194			spread = atof(argv[++i]);
195			break;
196			case 'a':
197			avghot = !avghot;
198			break;
199			case 'h':
200			hotlvl = atof(argv[++i]);
201			break;
202			case 'r':
203			rad = atof(argv[++i]);
204			break;
205	greg	2.9	case 'm':
206			thresh = atof(argv[++i]);
207			if (rad <= FTINY)
208	greg	2.21	rad = 0.6;
209	greg	2.9	break;
210	greg	1.1	case 'b':
211	greg	2.9	rad = thresh = 0.0;
212	greg	1.1	break;
213			default:;
214			badopt:
215			fprintf(stderr, "%s: unknown option: %s\n",
216			progname, argv[i]);
217			quit(1);
218			break;
219			}
220			else
221			break;
222	greg	1.14	/* get lamp data (if necessary) */
223			if (lamptype != NULL) {
224			if (loadlamps(lampdat) < 0)
225			quit(1);
226			if ((lampcolor = matchlamp(lamptype)) == NULL) {
227			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
228			quit(1);
229			}
230	greg	2.13	for (j = 0; j < 3; j++)
231			if (lampcolor[j] > 1e-4)
232			colval(exposure,j) /= lampcolor[j];
233	greg	1.14	freelamps();
234			}
235			/* open input file */
236	greg	1.1	if (i == argc) {
237			if (singlepass)
238			fin = stdin;
239			else {
240	greg	2.11	tfname = mktemp(template);
241	greg	1.1	if ((fin = fopen(tfname, "w+")) == NULL) {
242			fprintf(stderr, "%s: can't create ", progname);
243			fprintf(stderr, "temp file \"%s\"\n", tfname);
244			quit(1);
245			}
246			copyfile(stdin, fin);
247			if (fseek(fin, 0L, 0) == -1) {
248			fprintf(stderr, "%s: seek fail\n", progname);
249			quit(1);
250			}
251			}
252			} else if (i == argc-1) {
253			if ((fin = fopen(argv[i], "r")) == NULL) {
254			fprintf(stderr, "%s: can't open file \"%s\"\n",
255			progname, argv[i]);
256			quit(1);
257			}
258			} else {
259			fprintf(stderr, "%s: bad # file arguments\n", progname);
260			quit(1);
261			}
262	greg	1.9	/* get header */
263	greg	1.16	getheader(fin, headline, NULL);
264			if (wrongformat) {
265			fprintf(stderr, "%s: input must be a Radiance picture\n",
266			progname);
267			quit(1);
268			}
269	greg	2.37	if (setspectrsamp(CNDX, WLPART) < 0) {
270	greg	2.36	fprintf(stderr, "%s: bad number of components\n", progname);
271			quit(1);
272			}
273	greg	1.1	/* add new header info. */
274			printargs(i, argv, stdout);
275			/* get picture size */
276	greg	1.19	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
277	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
278			quit(1);
279			}
280	greg	1.19	if (!(order & YMAJOR))
281			inpaspect = 1.0/inpaspect;
282	greg	2.17	/* wrap around for cylindrical view? */
283			wrapfilt = gotview && ourview.type == VT_CYL &&
284			ourview.horiz >= 360.-FTINY && order & YMAJOR;
285	greg	1.9	/* compute output resolution */
286			if (ncols <= 0)
287	greg	1.4	ncols = x_c*xres + .5;
288	greg	1.9	if (nrows <= 0)
289	greg	1.4	nrows = y_r*yres + .5;
290	greg	1.9	if (outaspect > .01) {
291			d = inpaspect * yres/xres / outaspect;
292			if (d * ncols > nrows)
293			ncols = nrows / d;
294			else
295			nrows = ncols * d;
296			}
297			x_c = (double)ncols/xres;
298			y_r = (double)nrows/yres;
299	greg	1.1
300	greg	1.9	if (singlepass) { /* skip exposure, etc. */
301	greg	1.1	pass1default();
302			pass2(fin);
303			quit(0);
304			}
305
306			fpos = ftell(fin); /* save input file position */
307
308			pass1(fin);
309
310			if (fseek(fin, fpos, 0) == -1) {
311			fprintf(stderr, "%s: seek fail\n", progname);
312			quit(1);
313			}
314			pass2(fin);
315
316	greg	2.18	quit(estatus);
317	schorsch	2.29	return estatus; /* pro forma return */
318	greg	1.1	}
319
320
321	schorsch	2.29	static double
322			rgb_bright(
323	greg	2.36	SCOLOR clr
324	schorsch	2.29	)
325	greg	2.15	{
326			return(bright(clr));
327			}
328
329
330	schorsch	2.29	static double
331			xyz_bright(
332	greg	2.36	SCOLOR clr
333			)
334			{
335			return(colval(clr,CIEY));
336			}
337
338
339			static double
340			spec_bright(
341			SCOLOR clr
342	schorsch	2.29	)
343	greg	2.15	{
344	greg	2.36	return(pbright(clr));
345	greg	2.15	}
346
347
348	schorsch	2.30	brightfunc_t *ourbright = rgb_bright;
349	greg	2.15
350	schorsch	2.28	static int
351			headline( /* process line from header */
352			char *s,
353			void *p
354			)
355	greg	1.9	{
356	greg	2.33	char fmt[MAXFMTLEN];
357	greg	1.16
358	greg	1.9	fputs(s, stdout); /* copy to output */
359			if (isaspect(s)) /* get aspect ratio */
360			inpaspect *= aspectval(s);
361	greg	2.15	else if (isexpos(s)) /* get exposure */
362	greg	2.8	hotlvl *= exposval(s);
363	greg	2.36	else if (isncomp(s)) /* get #components (spectral) */
364			NCSAMP = ncompval(s);
365			else if (iswlsplit(s)) /* get wavelength partitions */
366			wlsplitval(WLPART, s);
367	greg	2.15	else if (formatval(fmt, s)) { /* get format */
368			wrongformat = 0;
369			if (!strcmp(COLRFMT, fmt))
370			ourbright = rgb_bright;
371			else if (!strcmp(CIEFMT, fmt))
372			ourbright = xyz_bright;
373	greg	2.36	else if (!strcmp(SPECFMT, fmt))
374			ourbright = spec_bright;
375	greg	2.15	else
376			wrongformat = !globmatch(PICFMT, fmt);
377	greg	2.17	} else if (isview(s) && sscanview(&ourview, s) > 0)
378			gotview++;
379	gwlarson	2.20	return(0);
380	greg	1.9	}
381
382
383	schorsch	2.29	static void
384			copyfile( /* copy a file */
385	greg	2.32	FILE *in,
386			FILE *out
387	schorsch	2.29	)
388	greg	1.1	{
389	greg	2.32	int c;
390	greg	1.1
391			while ((c = getc(in)) != EOF)
392			putc(c, out);
393
394			if (ferror(out)) {
395			fprintf(stderr, "%s: write error in copyfile\n", progname);
396			quit(1);
397			}
398			}
399
400
401	schorsch	2.29	static void
402			pass1( /* first pass of picture file */
403			FILE *in
404			)
405	greg	1.1	{
406			int i;
407	greg	2.36	COLORV *scan;
408	greg	1.1
409			pass1init();
410
411	greg	2.36	scan = (COLORV )malloc(xresNCSAMP*sizeof(COLORV));
412	greg	1.1	if (scan == NULL) {
413			fprintf(stderr, "%s: out of memory\n", progname);
414			quit(1);
415			}
416			for (i = 0; i < yres; i++) {
417	greg	2.36	if (freadsscan(scan, NCSAMP, xres, in) < 0) {
418	greg	2.7	nrows = (long)nrows * i / yres; /* adjust frame */
419	greg	1.1	if (nrows <= 0) {
420			fprintf(stderr, "%s: empty frame\n", progname);
421			quit(1);
422			}
423			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
424	greg	2.7	progname, (int)(100L*i/yres));
425	greg	1.1	yres = i;
426	greg	1.11	y_r = (double)nrows/yres;
427	greg	2.18	estatus++;
428	greg	1.1	break;
429			}
430			pass1scan(scan, i);
431			}
432	greg	2.36	free(scan);
433	greg	1.1	}
434
435
436	schorsch	2.29	static void
437			pass2( /* last pass on file, write to stdout */
438			FILE *in
439			)
440	greg	1.1	{
441			int yread;
442			int ycent, xcent;
443			int r, c;
444	greg	2.4
445	greg	1.1	pass2init();
446			scan2init();
447			yread = 0;
448			for (r = 0; r < nrows; r++) {
449	greg	2.19	ycent = (r+.5)*yres/nrows;
450	greg	1.1	while (yread <= ycent+yrad) {
451			if (yread < yres) {
452	greg	2.36	if (freadsscan(scanin[yread%barsize],
453			NCSAMP, xres, in) < 0) {
454	greg	1.1	fprintf(stderr,
455	greg	2.14	"%s: truncated input (y=%d)\n",
456	greg	1.1	progname, yres-1-yread);
457			quit(1);
458			}
459			pass2scan(scanin[yread%barsize], yread);
460			}
461			yread++;
462			}
463	greg	2.9	if (obarsize > 0)
464			scan2sync(r);
465	greg	1.1	for (c = 0; c < ncols; c++) {
466	greg	2.19	xcent = (c+.5)*xres/ncols;
467	greg	2.9	if (thresh > FTINY)
468			dothresh(xcent, ycent, c, r);
469			else if (rad > FTINY)
470	greg	2.36	dogauss(scanout+c*NCSAMP, xcent, ycent, c, r);
471	greg	2.9	else
472	greg	2.36	dobox(scanout+c*NCSAMP, xcent, ycent, c, r);
473	greg	1.1	}
474	greg	2.36	if (scanout != NULL && fwritesscan(scanout, NCSAMP, ncols, stdout) < 0) {
475	greg	1.1	fprintf(stderr, "%s: write error in pass2\n", progname);
476			quit(1);
477			}
478			}
479	greg	2.9	/* skip leftover input */
480	greg	1.10	while (yread < yres) {
481	greg	2.36	if (freadsscan(scanin[0], NCSAMP, xres, in) < 0)
482	greg	1.10	break;
483			yread++;
484			}
485	greg	2.9	scan2flush(); /* flush output */
486	greg	1.1	}
487
488
489	schorsch	2.29	static void
490			scan2init(void) /* prepare scanline arrays */
491	greg	1.1	{
492	greg	1.15	COLOR ctmp;
493	greg	2.4	double d;
494	greg	2.32	int i;
495	greg	1.1
496	greg	2.9	xbrad = xres/ncols/2 + 1;
497			ybrad = yres/nrows/2 + 1;
498			if (rad > FTINY) {
499	greg	1.1	if (nrows >= yres && ncols >= xres)
500			rad *= (y_r + x_c)/2.0;
501
502	greg	2.9	if (thresh > FTINY) {
503			orad = CHECKRADTHRESHRADrad + 1;
504	greg	2.16	xrad = orad/x_c + xbrad;
505			yrad = orad/y_r + ybrad;
506	greg	2.9	obarsize = 2*orad + 1;
507			} else {
508			xrad = CHECKRAD*rad/x_c + 1;
509			yrad = CHECKRAD*rad/y_r + 1;
510			}
511	greg	1.1	initmask(); /* initialize filter table */
512	greg	2.9	} else {
513			xrad = xbrad;
514			yrad = ybrad;
515	greg	1.1	}
516	greg	1.17	barsize = 2*yrad + 1;
517	greg	2.36	scanin = (COLORV *)malloc(barsizesizeof(COLORV *));
518	greg	2.10	if (scanin == NULL)
519			goto memerr;
520	greg	1.1	for (i = 0; i < barsize; i++) {
521	greg	2.36	scanin[i] = (COLORV )malloc(xresNCSAMP*sizeof(COLORV));
522	greg	2.10	if (scanin[i] == NULL)
523			goto memerr;
524	greg	1.1	}
525	greg	2.9	if (obarsize > 0) {
526	greg	2.36	scoutbar = (COLORV *)malloc(obarsizesizeof(COLORV *));
527	greg	2.9	greybar = (float *)malloc(obarsizesizeof(float *));
528	schorsch	2.26	if ((scoutbar == NULL) \| (greybar == NULL))
529	greg	2.10	goto memerr;
530	greg	2.9	for (i = 0; i < obarsize; i++) {
531	greg	2.36	scoutbar[i] = (COLORV )malloc(ncolsNCSAMP*sizeof(COLORV));
532	greg	2.9	greybar[i] = (float )malloc(ncolssizeof(float));
533	schorsch	2.26	if ((scoutbar[i] == NULL) \| (greybar[i] == NULL))
534	greg	2.10	goto memerr;
535	greg	2.9	}
536			} else {
537	greg	2.36	scanout = (COLORV )malloc(ncolsNCSAMP*sizeof(COLORV));
538	greg	2.10	if (scanout == NULL)
539			goto memerr;
540	greg	1.1	}
541	greg	1.15	/* record pixel aspect ratio */
542	greg	1.12	if (!correctaspect) {
543	greg	1.19	d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
544	greg	1.15	if (!FEQ(d,1.0))
545	greg	1.12	fputaspect(d, stdout);
546			}
547	greg	1.15	/* record exposure */
548	greg	2.36	d = bright(exposure);
549	greg	1.15	if (!FEQ(d,1.0))
550	greg	1.9	fputexpos(d, stdout);
551	greg	1.15	/* record color correction */
552			copycolor(ctmp, exposure);
553			scalecolor(ctmp, 1.0/d);
554			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
555			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
556			fputcolcor(ctmp, stdout);
557	greg	1.1	printf("\n");
558	greg	1.15	/* write out resolution */
559	greg	1.19	fputresolu(order, ncols, nrows, stdout);
560	greg	2.10	return;
561			memerr:
562			fprintf(stderr, "%s: out of memory\n", progname);
563			quit(1);
564	greg	2.9	}
565
566
567	schorsch	2.29	static void
568			scan2sync( /* synchronize grey averages and output scan */
569			int r
570			)
571	greg	2.9	{
572			static int nextrow = 0;
573	greg	2.36	SCOLOR ctmp;
574	greg	2.9	int ybot;
575	greg	2.32	int c;
576	greg	2.9	/* average input scanlines */
577	greg	2.16	while (nextrow <= r+orad && nextrow < nrows) {
578	greg	2.19	ybot = (nextrow+.5)*yres/nrows;
579	greg	2.9	for (c = 0; c < ncols; c++) {
580	greg	2.19	dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow);
581	greg	2.15	greybar[nextrow%obarsize][c] = (*ourbright)(ctmp);
582	greg	2.9	}
583			/* and zero output scanline */
584	greg	2.36	memset(scoutbar[nextrow%obarsize], 0, ncolsNCSAMPsizeof(COLORV));
585	greg	2.9	nextrow++;
586			}
587			/* point to top scanline for output */
588			if (r-orad >= 0)
589			scanout = scoutbar[(r-orad)%obarsize];
590			else
591			scanout = NULL;
592			}
593
594
595	schorsch	2.29	static void
596			scan2flush(void) /* flush output buffer */
597	greg	2.9	{
598	greg	2.32	int r;
599	greg	2.9
600			for (r = nrows-orad; r < nrows; r++)
601	greg	2.36	if (fwritesscan(scoutbar[r%obarsize], NCSAMP, ncols, stdout) < 0)
602	greg	2.9	break;
603			if (fflush(stdout) < 0) {
604			fprintf(stderr, "%s: write error at end of pass2\n", progname);
605	greg	2.18	quit(1);
606	greg	2.9	}
607	greg	1.1	}
608
609
610	greg	2.21	void
611	greg	1.1	quit(code) /* remove temporary file and exit */
612			int code;
613			{
614			if (tfname != NULL)
615			unlink(tfname);
616			exit(code);
617			}