src/px/pfilt.c

#ifndef lint
static const char RCSid[] = "$Id: pfilt.c,v 2.34 2019/12/28 18:05:14 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 */
COLOR  **scanin;                /* input scan bar */
COLOR  *scanout;                /* output scan line */
COLOR  **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 brightfunc_t rgb_bright;
static brightfunc_t xyz_bright;
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);
        }
                                        /* 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(
        COLOR  clr
)
{
        return(bright(clr));
}


static double
xyz_bright(
        COLOR  clr
)
{
        return(clr[CIEY]);
}


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 (formatval(fmt, s)) {   /* get format */
                wrongformat = 0;
                if (!strcmp(COLRFMT, fmt))
                        ourbright = rgb_bright;
                else if (!strcmp(CIEFMT, fmt))
                        ourbright = xyz_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;
        COLOR  *scan;

        pass1init();

        scan = (COLOR *)malloc(xres*sizeof(COLOR));
        if (scan == NULL) {
                fprintf(stderr, "%s: out of memory\n", progname);
                quit(1);
        }
        for (i = 0; i < yres; i++) {
                if (freadscan(scan, 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((void *)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 (freadscan(scanin[yread%barsize],
                                                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], xcent, ycent, c, r);
                        else
                                dobox(scanout[c], xcent, ycent, c, r);
                }
                if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) {
                        fprintf(stderr, "%s: write error in pass2\n", progname);
                        quit(1);
                }
        }
                                        /* skip leftover input */
        while (yread < yres) {
                if (freadscan(scanin[0], 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 = (COLOR **)malloc(barsize*sizeof(COLOR *));
        if (scanin == NULL)
                goto memerr;
        for (i = 0; i < barsize; i++) {
                scanin[i] = (COLOR *)malloc(xres*sizeof(COLOR));
                if (scanin[i] == NULL)
                        goto memerr;
        }
        if (obarsize > 0) {
                scoutbar = (COLOR **)malloc(obarsize*sizeof(COLOR *));
                greybar = (float **)malloc(obarsize*sizeof(float *));
                if ((scoutbar == NULL) | (greybar == NULL))
                        goto memerr;
                for (i = 0; i < obarsize; i++) {
                        scoutbar[i] = (COLOR *)malloc(ncols*sizeof(COLOR));
                        greybar[i] = (float *)malloc(ncols*sizeof(float));
                        if ((scoutbar[i] == NULL) | (greybar[i] == NULL))
                                goto memerr;
                }
        } else {
                scanout = (COLOR *)malloc(ncols*sizeof(COLOR));
                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 = (*ourbright)(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;
        COLOR  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((char *)scoutbar[nextrow%obarsize], '\0', ncols*sizeof(COLOR));
                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 (fwritescan(scoutbar[r%obarsize], 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:	2.35
Committed:	Thu Dec 7 21:15:54 2023 UTC (4 months, 3 weeks ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.34:	+3 -8 lines
Log Message:	refactor: Cleaned up and simplified #include's
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.35	static const char RCSid[] = "$Id: pfilt.c,v 2.34 2019/12/28 18:05:14 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			COLOR *scanin; / input scan bar */
73			COLOR scanout; / output scan line */
74	greg	2.9	COLOR *scoutbar; / output scan bar (if thresh > 0) */
75			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	2.30	static brightfunc_t rgb_bright;
83			static brightfunc_t xyz_bright;
84	schorsch	2.29	static void copyfile(FILE in, FILE out);
85			static void pass1(FILE *in);
86			static void pass2(FILE *in);
87			static void scan2init(void);
88			static void scan2sync(int r);
89			static void scan2flush(void);
90	schorsch	2.28
91	greg	1.1
92	schorsch	2.29	int
93			main(
94			int argc,
95			char **argv
96			)
97	greg	1.1	{
98			FILE *fin;
99	greg	1.13	float *lampcolor;
100			char *lamptype = NULL;
101	greg	1.1	long fpos;
102	greg	2.4	double outaspect = 0.0;
103			double d;
104	greg	2.13	int i, j;
105	schorsch	2.23	SET_DEFAULT_BINARY();
106			SET_FILE_BINARY(stdin);
107			SET_FILE_BINARY(stdout);
108	greg	1.1	if (signal(SIGINT, quit) == SIG_IGN)
109			signal(SIGINT, SIG_IGN);
110	schorsch	2.24	#ifdef SIGHUP
111	greg	1.1	if (signal(SIGHUP, quit) == SIG_IGN)
112	greg	2.11	signal(SIGHUP, SIG_IGN);
113	schorsch	2.24	#endif
114	greg	1.1	signal(SIGTERM, quit);
115	schorsch	2.24	#ifdef SIGPIPE
116	greg	1.1	signal(SIGPIPE, quit);
117	schorsch	2.24	#endif
118	greg	2.4	#ifdef SIGXCPU
119	greg	1.1	signal(SIGXCPU, quit);
120			signal(SIGXFSZ, quit);
121			#endif
122
123	greg	2.6	progname = argv[0] = fixargv0(argv[0]);
124	greg	1.1
125			for (i = 1; i < argc; i++)
126			if (argv[i][0] == '-')
127			switch (argv[i][1]) {
128			case 'x':
129	greg	1.3	i++;
130	greg	1.5	if (argv[i][0] == '/') {
131	greg	1.4	x_c = 1.0/atof(argv[i]+1);
132	greg	1.5	ncols = 0;
133			} else
134	greg	1.3	ncols = atoi(argv[i]);
135	greg	1.1	break;
136			case 'y':
137	greg	1.3	i++;
138	greg	1.5	if (argv[i][0] == '/') {
139	greg	1.4	y_r = 1.0/atof(argv[i]+1);
140	greg	1.5	nrows = 0;
141			} else
142	greg	1.3	nrows = atoi(argv[i]);
143	greg	1.1	break;
144	greg	1.12	case 'c':
145			correctaspect = !correctaspect;
146			break;
147	greg	1.9	case 'p':
148			i++;
149			outaspect = atof(argv[i]);
150			break;
151	greg	1.1	case 'e':
152			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
153			d = pow(2.0, atof(argv[i+1]));
154			else
155			d = atof(argv[i+1]);
156	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
157			fprintf(stderr,
158			"%s: exposure out of range\n",
159			argv[0]);
160	greg	2.18	quit(1);
161	greg	1.15	}
162	greg	1.1	switch (argv[i][2]) {
163			case '\0':
164			scalecolor(exposure, d);
165			break;
166			case 'r':
167			colval(exposure,RED) *= d;
168			break;
169			case 'g':
170			colval(exposure,GRN) *= d;
171			break;
172			case 'b':
173			colval(exposure,BLU) *= d;
174			break;
175			default:
176			goto badopt;
177			}
178			i++;
179			break;
180	greg	1.13	case 'f':
181			lampdat = argv[++i];
182			break;
183			case 't':
184			lamptype = argv[++i];
185			break;
186	greg	1.1	case '1':
187			singlepass = 1;
188			break;
189	greg	1.6	case '2':
190			singlepass = 0;
191			break;
192	greg	1.9	case 'n':
193	greg	1.1	npts = atoi(argv[++i]) / 2;
194			break;
195			case 's':
196			spread = atof(argv[++i]);
197			break;
198			case 'a':
199			avghot = !avghot;
200			break;
201			case 'h':
202			hotlvl = atof(argv[++i]);
203			break;
204			case 'r':
205			rad = atof(argv[++i]);
206			break;
207	greg	2.9	case 'm':
208			thresh = atof(argv[++i]);
209			if (rad <= FTINY)
210	greg	2.21	rad = 0.6;
211	greg	2.9	break;
212	greg	1.1	case 'b':
213	greg	2.9	rad = thresh = 0.0;
214	greg	1.1	break;
215			default:;
216			badopt:
217			fprintf(stderr, "%s: unknown option: %s\n",
218			progname, argv[i]);
219			quit(1);
220			break;
221			}
222			else
223			break;
224	greg	1.14	/* get lamp data (if necessary) */
225			if (lamptype != NULL) {
226			if (loadlamps(lampdat) < 0)
227			quit(1);
228			if ((lampcolor = matchlamp(lamptype)) == NULL) {
229			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
230			quit(1);
231			}
232	greg	2.13	for (j = 0; j < 3; j++)
233			if (lampcolor[j] > 1e-4)
234			colval(exposure,j) /= lampcolor[j];
235	greg	1.14	freelamps();
236			}
237			/* open input file */
238	greg	1.1	if (i == argc) {
239			if (singlepass)
240			fin = stdin;
241			else {
242	greg	2.11	tfname = mktemp(template);
243	greg	1.1	if ((fin = fopen(tfname, "w+")) == NULL) {
244			fprintf(stderr, "%s: can't create ", progname);
245			fprintf(stderr, "temp file \"%s\"\n", tfname);
246			quit(1);
247			}
248			copyfile(stdin, fin);
249			if (fseek(fin, 0L, 0) == -1) {
250			fprintf(stderr, "%s: seek fail\n", progname);
251			quit(1);
252			}
253			}
254			} else if (i == argc-1) {
255			if ((fin = fopen(argv[i], "r")) == NULL) {
256			fprintf(stderr, "%s: can't open file \"%s\"\n",
257			progname, argv[i]);
258			quit(1);
259			}
260			} else {
261			fprintf(stderr, "%s: bad # file arguments\n", progname);
262			quit(1);
263			}
264	greg	1.9	/* get header */
265	greg	1.16	getheader(fin, headline, NULL);
266			if (wrongformat) {
267			fprintf(stderr, "%s: input must be a Radiance picture\n",
268			progname);
269			quit(1);
270			}
271	greg	1.1	/* add new header info. */
272			printargs(i, argv, stdout);
273			/* get picture size */
274	greg	1.19	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
275	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
276			quit(1);
277			}
278	greg	1.19	if (!(order & YMAJOR))
279			inpaspect = 1.0/inpaspect;
280	greg	2.17	/* wrap around for cylindrical view? */
281			wrapfilt = gotview && ourview.type == VT_CYL &&
282			ourview.horiz >= 360.-FTINY && order & YMAJOR;
283	greg	1.9	/* compute output resolution */
284			if (ncols <= 0)
285	greg	1.4	ncols = x_c*xres + .5;
286	greg	1.9	if (nrows <= 0)
287	greg	1.4	nrows = y_r*yres + .5;
288	greg	1.9	if (outaspect > .01) {
289			d = inpaspect * yres/xres / outaspect;
290			if (d * ncols > nrows)
291			ncols = nrows / d;
292			else
293			nrows = ncols * d;
294			}
295			x_c = (double)ncols/xres;
296			y_r = (double)nrows/yres;
297	greg	1.1
298	greg	1.9	if (singlepass) { /* skip exposure, etc. */
299	greg	1.1	pass1default();
300			pass2(fin);
301			quit(0);
302			}
303
304			fpos = ftell(fin); /* save input file position */
305
306			pass1(fin);
307
308			if (fseek(fin, fpos, 0) == -1) {
309			fprintf(stderr, "%s: seek fail\n", progname);
310			quit(1);
311			}
312			pass2(fin);
313
314	greg	2.18	quit(estatus);
315	schorsch	2.29	return estatus; /* pro forma return */
316	greg	1.1	}
317
318
319	schorsch	2.29	static double
320			rgb_bright(
321			COLOR clr
322			)
323	greg	2.15	{
324			return(bright(clr));
325			}
326
327
328	schorsch	2.29	static double
329			xyz_bright(
330			COLOR clr
331			)
332	greg	2.15	{
333			return(clr[CIEY]);
334			}
335
336
337	schorsch	2.30	brightfunc_t *ourbright = rgb_bright;
338	greg	2.15
339	schorsch	2.28	static int
340			headline( /* process line from header */
341			char *s,
342			void *p
343			)
344	greg	1.9	{
345	greg	2.33	char fmt[MAXFMTLEN];
346	greg	1.16
347	greg	1.9	fputs(s, stdout); /* copy to output */
348			if (isaspect(s)) /* get aspect ratio */
349			inpaspect *= aspectval(s);
350	greg	2.15	else if (isexpos(s)) /* get exposure */
351	greg	2.8	hotlvl *= exposval(s);
352	greg	2.15	else if (formatval(fmt, s)) { /* get format */
353			wrongformat = 0;
354			if (!strcmp(COLRFMT, fmt))
355			ourbright = rgb_bright;
356			else if (!strcmp(CIEFMT, fmt))
357			ourbright = xyz_bright;
358			else
359			wrongformat = !globmatch(PICFMT, fmt);
360	greg	2.17	} else if (isview(s) && sscanview(&ourview, s) > 0)
361			gotview++;
362	gwlarson	2.20	return(0);
363	greg	1.9	}
364
365
366	schorsch	2.29	static void
367			copyfile( /* copy a file */
368	greg	2.32	FILE *in,
369			FILE *out
370	schorsch	2.29	)
371	greg	1.1	{
372	greg	2.32	int c;
373	greg	1.1
374			while ((c = getc(in)) != EOF)
375			putc(c, out);
376
377			if (ferror(out)) {
378			fprintf(stderr, "%s: write error in copyfile\n", progname);
379			quit(1);
380			}
381			}
382
383
384	schorsch	2.29	static void
385			pass1( /* first pass of picture file */
386			FILE *in
387			)
388	greg	1.1	{
389			int i;
390			COLOR *scan;
391
392			pass1init();
393
394			scan = (COLOR )malloc(xressizeof(COLOR));
395			if (scan == NULL) {
396			fprintf(stderr, "%s: out of memory\n", progname);
397			quit(1);
398			}
399			for (i = 0; i < yres; i++) {
400			if (freadscan(scan, xres, in) < 0) {
401	greg	2.7	nrows = (long)nrows * i / yres; /* adjust frame */
402	greg	1.1	if (nrows <= 0) {
403			fprintf(stderr, "%s: empty frame\n", progname);
404			quit(1);
405			}
406			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
407	greg	2.7	progname, (int)(100L*i/yres));
408	greg	1.1	yres = i;
409	greg	1.11	y_r = (double)nrows/yres;
410	greg	2.18	estatus++;
411	greg	1.1	break;
412			}
413			pass1scan(scan, i);
414			}
415	greg	2.21	free((void *)scan);
416	greg	1.1	}
417
418
419	schorsch	2.29	static void
420			pass2( /* last pass on file, write to stdout */
421			FILE *in
422			)
423	greg	1.1	{
424			int yread;
425			int ycent, xcent;
426			int r, c;
427	greg	2.4
428	greg	1.1	pass2init();
429			scan2init();
430			yread = 0;
431			for (r = 0; r < nrows; r++) {
432	greg	2.19	ycent = (r+.5)*yres/nrows;
433	greg	1.1	while (yread <= ycent+yrad) {
434			if (yread < yres) {
435			if (freadscan(scanin[yread%barsize],
436			xres, in) < 0) {
437			fprintf(stderr,
438	greg	2.14	"%s: truncated input (y=%d)\n",
439	greg	1.1	progname, yres-1-yread);
440			quit(1);
441			}
442			pass2scan(scanin[yread%barsize], yread);
443			}
444			yread++;
445			}
446	greg	2.9	if (obarsize > 0)
447			scan2sync(r);
448	greg	1.1	for (c = 0; c < ncols; c++) {
449	greg	2.19	xcent = (c+.5)*xres/ncols;
450	greg	2.9	if (thresh > FTINY)
451			dothresh(xcent, ycent, c, r);
452			else if (rad > FTINY)
453			dogauss(scanout[c], xcent, ycent, c, r);
454			else
455	greg	1.1	dobox(scanout[c], xcent, ycent, c, r);
456			}
457	greg	2.9	if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) {
458	greg	1.1	fprintf(stderr, "%s: write error in pass2\n", progname);
459			quit(1);
460			}
461			}
462	greg	2.9	/* skip leftover input */
463	greg	1.10	while (yread < yres) {
464			if (freadscan(scanin[0], xres, in) < 0)
465			break;
466			yread++;
467			}
468	greg	2.9	scan2flush(); /* flush output */
469	greg	1.1	}
470
471
472	schorsch	2.29	static void
473			scan2init(void) /* prepare scanline arrays */
474	greg	1.1	{
475	greg	1.15	COLOR ctmp;
476	greg	2.4	double d;
477	greg	2.32	int i;
478	greg	1.1
479	greg	2.9	xbrad = xres/ncols/2 + 1;
480			ybrad = yres/nrows/2 + 1;
481			if (rad > FTINY) {
482	greg	1.1	if (nrows >= yres && ncols >= xres)
483			rad *= (y_r + x_c)/2.0;
484
485	greg	2.9	if (thresh > FTINY) {
486			orad = CHECKRADTHRESHRADrad + 1;
487	greg	2.16	xrad = orad/x_c + xbrad;
488			yrad = orad/y_r + ybrad;
489	greg	2.9	obarsize = 2*orad + 1;
490			} else {
491			xrad = CHECKRAD*rad/x_c + 1;
492			yrad = CHECKRAD*rad/y_r + 1;
493			}
494	greg	1.1	initmask(); /* initialize filter table */
495	greg	2.9	} else {
496			xrad = xbrad;
497			yrad = ybrad;
498	greg	1.1	}
499	greg	1.17	barsize = 2*yrad + 1;
500	greg	1.1	scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
501	greg	2.10	if (scanin == NULL)
502			goto memerr;
503	greg	1.1	for (i = 0; i < barsize; i++) {
504			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
505	greg	2.10	if (scanin[i] == NULL)
506			goto memerr;
507	greg	1.1	}
508	greg	2.9	if (obarsize > 0) {
509			scoutbar = (COLOR *)malloc(obarsizesizeof(COLOR *));
510			greybar = (float *)malloc(obarsizesizeof(float *));
511	schorsch	2.26	if ((scoutbar == NULL) \| (greybar == NULL))
512	greg	2.10	goto memerr;
513	greg	2.9	for (i = 0; i < obarsize; i++) {
514			scoutbar[i] = (COLOR )malloc(ncolssizeof(COLOR));
515			greybar[i] = (float )malloc(ncolssizeof(float));
516	schorsch	2.26	if ((scoutbar[i] == NULL) \| (greybar[i] == NULL))
517	greg	2.10	goto memerr;
518	greg	2.9	}
519			} else {
520			scanout = (COLOR )malloc(ncolssizeof(COLOR));
521	greg	2.10	if (scanout == NULL)
522			goto memerr;
523	greg	1.1	}
524	greg	1.15	/* record pixel aspect ratio */
525	greg	1.12	if (!correctaspect) {
526	greg	1.19	d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
527	greg	1.15	if (!FEQ(d,1.0))
528	greg	1.12	fputaspect(d, stdout);
529			}
530	greg	1.15	/* record exposure */
531	greg	2.15	d = (*ourbright)(exposure);
532	greg	1.15	if (!FEQ(d,1.0))
533	greg	1.9	fputexpos(d, stdout);
534	greg	1.15	/* record color correction */
535			copycolor(ctmp, exposure);
536			scalecolor(ctmp, 1.0/d);
537			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
538			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
539			fputcolcor(ctmp, stdout);
540	greg	1.1	printf("\n");
541	greg	1.15	/* write out resolution */
542	greg	1.19	fputresolu(order, ncols, nrows, stdout);
543	greg	2.10	return;
544			memerr:
545			fprintf(stderr, "%s: out of memory\n", progname);
546			quit(1);
547	greg	2.9	}
548
549
550	schorsch	2.29	static void
551			scan2sync( /* synchronize grey averages and output scan */
552			int r
553			)
554	greg	2.9	{
555			static int nextrow = 0;
556			COLOR ctmp;
557			int ybot;
558	greg	2.32	int c;
559	greg	2.9	/* average input scanlines */
560	greg	2.16	while (nextrow <= r+orad && nextrow < nrows) {
561	greg	2.19	ybot = (nextrow+.5)*yres/nrows;
562	greg	2.9	for (c = 0; c < ncols; c++) {
563	greg	2.19	dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow);
564	greg	2.15	greybar[nextrow%obarsize][c] = (*ourbright)(ctmp);
565	greg	2.9	}
566			/* and zero output scanline */
567	schorsch	2.25	memset((char )scoutbar[nextrow%obarsize], '\0', ncolssizeof(COLOR));
568	greg	2.9	nextrow++;
569			}
570			/* point to top scanline for output */
571			if (r-orad >= 0)
572			scanout = scoutbar[(r-orad)%obarsize];
573			else
574			scanout = NULL;
575			}
576
577
578	schorsch	2.29	static void
579			scan2flush(void) /* flush output buffer */
580	greg	2.9	{
581	greg	2.32	int r;
582	greg	2.9
583			for (r = nrows-orad; r < nrows; r++)
584			if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0)
585			break;
586			if (fflush(stdout) < 0) {
587			fprintf(stderr, "%s: write error at end of pass2\n", progname);
588	greg	2.18	quit(1);
589	greg	2.9	}
590	greg	1.1	}
591
592
593	greg	2.21	void
594	greg	1.1	quit(code) /* remove temporary file and exit */
595			int code;
596			{
597			if (tfname != NULL)
598			unlink(tfname);
599			exit(code);
600			}