src/px/pfilt.c

#ifndef lint
static const char RCSid[] = "$Id: pfilt.c,v 2.28 2004/01/02 12:47:01 schorsch 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  <string.h>

#include  "platform.h"
#include  "standard.h"
#include  "rtio.h"
#include  "color.h"
#include  "view.h"
#include  "paths.h"
#include  "pfilt.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 double rgb_bright(COLOR  clr);
static double xyz_bright(COLOR  clr);
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]);
}


double  (*ourbright)() = rgb_bright;


static int
headline(                               /* process line from header */
        char    *s,
        void    *p
)
{
        char  fmt[32];

        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 */
        register FILE  *in,
        register FILE  *out
)
{
        register 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;
        register 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;
        register 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 */
{
        register 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:	2.29
Committed:	Sun Mar 28 20:33:14 2004 UTC (20 years ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.28:	+46 -21 lines
Log Message:	Continued ANSIfication, and other fixes and clarifications.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.29	static const char RCSid[] = "$Id: pfilt.c,v 2.28 2004/01/02 12:47:01 schorsch 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	schorsch	2.25	#include <string.h>
15	greg	1.1
16	greg	2.27	#include "platform.h"
17	schorsch	2.23	#include "standard.h"
18	schorsch	2.29	#include "rtio.h"
19	greg	1.1	#include "color.h"
20	greg	2.17	#include "view.h"
21	greg	2.3	#include "paths.h"
22	schorsch	2.29	#include "pfilt.h"
23	greg	2.3
24	greg	1.1
25	greg	2.4	#define FEQ(a,b) ((a) >= .98(b) && (a) <= 1.02(b))
26	greg	1.15
27	greg	2.22	double CHECKRAD = 2.0; /* radius to check for filtering */
28	greg	1.1
29	greg	2.9	#define THRESHRAD 5.0 /* maximum sample spread in output */
30
31	greg	1.1	COLOR exposure = WHTCOLOR; /* exposure for the frame */
32
33	greg	2.4	double rad = 0.0; /* output pixel radius for filtering */
34	greg	1.1
35	greg	2.9	double thresh = 0.0; /* maximum contribution for subpixel */
36
37	greg	1.1	int nrows = 0; /* number of rows for output */
38			int ncols = 0; /* number of columns for output */
39
40	greg	2.4	double x_c = 1.0; /* ratio of output x size to input */
41			double y_r = 1.0; /* ratio of output y size to input */
42	greg	1.2
43	greg	1.1	int singlepass = 0; /* true means skip first pass */
44
45			int avghot = 0; /* true means average in bright spots */
46
47	greg	2.8	double hotlvl = 100.0; /* level considered "hot" */
48	greg	1.1
49			int npts = 0; /* (half) number of points for stars */
50
51	greg	2.4	double spread = 1e-4; /* spread for star points */
52	greg	1.1
53			char *tfname = NULL;
54
55	greg	2.11	char template[] = TEMPLATE;
56
57	greg	1.13	char lampdat = "lamp.tab"; / lamp data file */
58
59	greg	1.19	int order; /* scanline ordering of input */
60	greg	1.1	int xres, yres; /* resolution of input */
61	greg	2.4	double inpaspect = 1.0; /* pixel aspect ratio of input */
62	greg	1.12	int correctaspect = 0; /* aspect ratio correction? */
63	greg	1.1
64	greg	1.16	int wrongformat = 0;
65
66	greg	2.17	VIEW ourview = STDVIEW;
67			int gotview = 0;
68			int wrapfilt = 0; /* wrap filter horizontally? */
69
70	greg	2.18	int estatus = 0; /* exit status (for non-fatal errors) */
71
72	greg	2.9	int xrad; /* x search radius */
73			int yrad; /* y search radius */
74			int xbrad; /* x box size */
75			int ybrad; /* y box size */
76	greg	1.1
77			int barsize; /* size of input scan bar */
78			COLOR *scanin; / input scan bar */
79			COLOR scanout; / output scan line */
80	greg	2.9	COLOR *scoutbar; / output scan bar (if thresh > 0) */
81			float *greybar; / grey-averaged input values */
82			int obarsize = 0; /* size of output scan bar */
83			int orad = 0; /* output window radius */
84	greg	1.1
85			char *progname;
86
87	schorsch	2.28	static gethfunc headline;
88	schorsch	2.29	static double rgb_bright(COLOR clr);
89			static double xyz_bright(COLOR clr);
90			static void copyfile(FILE in, FILE out);
91			static void pass1(FILE *in);
92			static void pass2(FILE *in);
93			static void scan2init(void);
94			static void scan2sync(int r);
95			static void scan2flush(void);
96	schorsch	2.28
97	greg	1.1
98	schorsch	2.29	int
99			main(
100			int argc,
101			char **argv
102			)
103	greg	1.1	{
104			FILE *fin;
105	greg	1.13	float *lampcolor;
106			char *lamptype = NULL;
107	greg	1.1	long fpos;
108	greg	2.4	double outaspect = 0.0;
109			double d;
110	greg	2.13	int i, j;
111	schorsch	2.23	SET_DEFAULT_BINARY();
112			SET_FILE_BINARY(stdin);
113			SET_FILE_BINARY(stdout);
114	greg	1.1	if (signal(SIGINT, quit) == SIG_IGN)
115			signal(SIGINT, SIG_IGN);
116	schorsch	2.24	#ifdef SIGHUP
117	greg	1.1	if (signal(SIGHUP, quit) == SIG_IGN)
118	greg	2.11	signal(SIGHUP, SIG_IGN);
119	schorsch	2.24	#endif
120	greg	1.1	signal(SIGTERM, quit);
121	schorsch	2.24	#ifdef SIGPIPE
122	greg	1.1	signal(SIGPIPE, quit);
123	schorsch	2.24	#endif
124	greg	2.4	#ifdef SIGXCPU
125	greg	1.1	signal(SIGXCPU, quit);
126			signal(SIGXFSZ, quit);
127			#endif
128
129	greg	2.6	progname = argv[0] = fixargv0(argv[0]);
130	greg	1.1
131			for (i = 1; i < argc; i++)
132			if (argv[i][0] == '-')
133			switch (argv[i][1]) {
134			case 'x':
135	greg	1.3	i++;
136	greg	1.5	if (argv[i][0] == '/') {
137	greg	1.4	x_c = 1.0/atof(argv[i]+1);
138	greg	1.5	ncols = 0;
139			} else
140	greg	1.3	ncols = atoi(argv[i]);
141	greg	1.1	break;
142			case 'y':
143	greg	1.3	i++;
144	greg	1.5	if (argv[i][0] == '/') {
145	greg	1.4	y_r = 1.0/atof(argv[i]+1);
146	greg	1.5	nrows = 0;
147			} else
148	greg	1.3	nrows = atoi(argv[i]);
149	greg	1.1	break;
150	greg	1.12	case 'c':
151			correctaspect = !correctaspect;
152			break;
153	greg	1.9	case 'p':
154			i++;
155			outaspect = atof(argv[i]);
156			break;
157	greg	1.1	case 'e':
158			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
159			d = pow(2.0, atof(argv[i+1]));
160			else
161			d = atof(argv[i+1]);
162	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
163			fprintf(stderr,
164			"%s: exposure out of range\n",
165			argv[0]);
166	greg	2.18	quit(1);
167	greg	1.15	}
168	greg	1.1	switch (argv[i][2]) {
169			case '\0':
170			scalecolor(exposure, d);
171			break;
172			case 'r':
173			colval(exposure,RED) *= d;
174			break;
175			case 'g':
176			colval(exposure,GRN) *= d;
177			break;
178			case 'b':
179			colval(exposure,BLU) *= d;
180			break;
181			default:
182			goto badopt;
183			}
184			i++;
185			break;
186	greg	1.13	case 'f':
187			lampdat = argv[++i];
188			break;
189			case 't':
190			lamptype = argv[++i];
191			break;
192	greg	1.1	case '1':
193			singlepass = 1;
194			break;
195	greg	1.6	case '2':
196			singlepass = 0;
197			break;
198	greg	1.9	case 'n':
199	greg	1.1	npts = atoi(argv[++i]) / 2;
200			break;
201			case 's':
202			spread = atof(argv[++i]);
203			break;
204			case 'a':
205			avghot = !avghot;
206			break;
207			case 'h':
208			hotlvl = atof(argv[++i]);
209			break;
210			case 'r':
211			rad = atof(argv[++i]);
212			break;
213	greg	2.9	case 'm':
214			thresh = atof(argv[++i]);
215			if (rad <= FTINY)
216	greg	2.21	rad = 0.6;
217	greg	2.9	break;
218	greg	1.1	case 'b':
219	greg	2.9	rad = thresh = 0.0;
220	greg	1.1	break;
221			default:;
222			badopt:
223			fprintf(stderr, "%s: unknown option: %s\n",
224			progname, argv[i]);
225			quit(1);
226			break;
227			}
228			else
229			break;
230	greg	1.14	/* get lamp data (if necessary) */
231			if (lamptype != NULL) {
232			if (loadlamps(lampdat) < 0)
233			quit(1);
234			if ((lampcolor = matchlamp(lamptype)) == NULL) {
235			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
236			quit(1);
237			}
238	greg	2.13	for (j = 0; j < 3; j++)
239			if (lampcolor[j] > 1e-4)
240			colval(exposure,j) /= lampcolor[j];
241	greg	1.14	freelamps();
242			}
243			/* open input file */
244	greg	1.1	if (i == argc) {
245			if (singlepass)
246			fin = stdin;
247			else {
248	greg	2.11	tfname = mktemp(template);
249	greg	1.1	if ((fin = fopen(tfname, "w+")) == NULL) {
250			fprintf(stderr, "%s: can't create ", progname);
251			fprintf(stderr, "temp file \"%s\"\n", tfname);
252			quit(1);
253			}
254			copyfile(stdin, fin);
255			if (fseek(fin, 0L, 0) == -1) {
256			fprintf(stderr, "%s: seek fail\n", progname);
257			quit(1);
258			}
259			}
260			} else if (i == argc-1) {
261			if ((fin = fopen(argv[i], "r")) == NULL) {
262			fprintf(stderr, "%s: can't open file \"%s\"\n",
263			progname, argv[i]);
264			quit(1);
265			}
266			} else {
267			fprintf(stderr, "%s: bad # file arguments\n", progname);
268			quit(1);
269			}
270	greg	1.9	/* get header */
271	greg	1.16	getheader(fin, headline, NULL);
272			if (wrongformat) {
273			fprintf(stderr, "%s: input must be a Radiance picture\n",
274			progname);
275			quit(1);
276			}
277	greg	1.1	/* add new header info. */
278			printargs(i, argv, stdout);
279			/* get picture size */
280	greg	1.19	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
281	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
282			quit(1);
283			}
284	greg	1.19	if (!(order & YMAJOR))
285			inpaspect = 1.0/inpaspect;
286	greg	2.17	/* wrap around for cylindrical view? */
287			wrapfilt = gotview && ourview.type == VT_CYL &&
288			ourview.horiz >= 360.-FTINY && order & YMAJOR;
289	greg	1.9	/* compute output resolution */
290			if (ncols <= 0)
291	greg	1.4	ncols = x_c*xres + .5;
292	greg	1.9	if (nrows <= 0)
293	greg	1.4	nrows = y_r*yres + .5;
294	greg	1.9	if (outaspect > .01) {
295			d = inpaspect * yres/xres / outaspect;
296			if (d * ncols > nrows)
297			ncols = nrows / d;
298			else
299			nrows = ncols * d;
300			}
301			x_c = (double)ncols/xres;
302			y_r = (double)nrows/yres;
303	greg	1.1
304	greg	1.9	if (singlepass) { /* skip exposure, etc. */
305	greg	1.1	pass1default();
306			pass2(fin);
307			quit(0);
308			}
309
310			fpos = ftell(fin); /* save input file position */
311
312			pass1(fin);
313
314			if (fseek(fin, fpos, 0) == -1) {
315			fprintf(stderr, "%s: seek fail\n", progname);
316			quit(1);
317			}
318			pass2(fin);
319
320	greg	2.18	quit(estatus);
321	schorsch	2.29	return estatus; /* pro forma return */
322	greg	1.1	}
323
324
325	schorsch	2.29	static double
326			rgb_bright(
327			COLOR clr
328			)
329	greg	2.15	{
330			return(bright(clr));
331			}
332
333
334	schorsch	2.29	static double
335			xyz_bright(
336			COLOR clr
337			)
338	greg	2.15	{
339			return(clr[CIEY]);
340			}
341
342
343			double (*ourbright)() = rgb_bright;
344
345
346	schorsch	2.28	static int
347			headline( /* process line from header */
348			char *s,
349			void *p
350			)
351	greg	1.9	{
352	greg	1.16	char fmt[32];
353
354	greg	1.9	fputs(s, stdout); /* copy to output */
355			if (isaspect(s)) /* get aspect ratio */
356			inpaspect *= aspectval(s);
357	greg	2.15	else if (isexpos(s)) /* get exposure */
358	greg	2.8	hotlvl *= exposval(s);
359	greg	2.15	else if (formatval(fmt, s)) { /* get format */
360			wrongformat = 0;
361			if (!strcmp(COLRFMT, fmt))
362			ourbright = rgb_bright;
363			else if (!strcmp(CIEFMT, fmt))
364			ourbright = xyz_bright;
365			else
366			wrongformat = !globmatch(PICFMT, fmt);
367	greg	2.17	} else if (isview(s) && sscanview(&ourview, s) > 0)
368			gotview++;
369	gwlarson	2.20	return(0);
370	greg	1.9	}
371
372
373	schorsch	2.29	static void
374			copyfile( /* copy a file */
375			register FILE *in,
376			register FILE *out
377			)
378	greg	1.1	{
379			register int c;
380
381			while ((c = getc(in)) != EOF)
382			putc(c, out);
383
384			if (ferror(out)) {
385			fprintf(stderr, "%s: write error in copyfile\n", progname);
386			quit(1);
387			}
388			}
389
390
391	schorsch	2.29	static void
392			pass1( /* first pass of picture file */
393			FILE *in
394			)
395	greg	1.1	{
396			int i;
397			COLOR *scan;
398
399			pass1init();
400
401			scan = (COLOR )malloc(xressizeof(COLOR));
402			if (scan == NULL) {
403			fprintf(stderr, "%s: out of memory\n", progname);
404			quit(1);
405			}
406			for (i = 0; i < yres; i++) {
407			if (freadscan(scan, xres, in) < 0) {
408	greg	2.7	nrows = (long)nrows * i / yres; /* adjust frame */
409	greg	1.1	if (nrows <= 0) {
410			fprintf(stderr, "%s: empty frame\n", progname);
411			quit(1);
412			}
413			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
414	greg	2.7	progname, (int)(100L*i/yres));
415	greg	1.1	yres = i;
416	greg	1.11	y_r = (double)nrows/yres;
417	greg	2.18	estatus++;
418	greg	1.1	break;
419			}
420			pass1scan(scan, i);
421			}
422	greg	2.21	free((void *)scan);
423	greg	1.1	}
424
425
426	schorsch	2.29	static void
427			pass2( /* last pass on file, write to stdout */
428			FILE *in
429			)
430	greg	1.1	{
431			int yread;
432			int ycent, xcent;
433			int r, c;
434	greg	2.4
435	greg	1.1	pass2init();
436			scan2init();
437			yread = 0;
438			for (r = 0; r < nrows; r++) {
439	greg	2.19	ycent = (r+.5)*yres/nrows;
440	greg	1.1	while (yread <= ycent+yrad) {
441			if (yread < yres) {
442			if (freadscan(scanin[yread%barsize],
443			xres, in) < 0) {
444			fprintf(stderr,
445	greg	2.14	"%s: truncated input (y=%d)\n",
446	greg	1.1	progname, yres-1-yread);
447			quit(1);
448			}
449			pass2scan(scanin[yread%barsize], yread);
450			}
451			yread++;
452			}
453	greg	2.9	if (obarsize > 0)
454			scan2sync(r);
455	greg	1.1	for (c = 0; c < ncols; c++) {
456	greg	2.19	xcent = (c+.5)*xres/ncols;
457	greg	2.9	if (thresh > FTINY)
458			dothresh(xcent, ycent, c, r);
459			else if (rad > FTINY)
460			dogauss(scanout[c], xcent, ycent, c, r);
461			else
462	greg	1.1	dobox(scanout[c], xcent, ycent, c, r);
463			}
464	greg	2.9	if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) {
465	greg	1.1	fprintf(stderr, "%s: write error in pass2\n", progname);
466			quit(1);
467			}
468			}
469	greg	2.9	/* skip leftover input */
470	greg	1.10	while (yread < yres) {
471			if (freadscan(scanin[0], xres, in) < 0)
472			break;
473			yread++;
474			}
475	greg	2.9	scan2flush(); /* flush output */
476	greg	1.1	}
477
478
479	schorsch	2.29	static void
480			scan2init(void) /* prepare scanline arrays */
481	greg	1.1	{
482	greg	1.15	COLOR ctmp;
483	greg	2.4	double d;
484	greg	1.1	register int i;
485
486	greg	2.9	xbrad = xres/ncols/2 + 1;
487			ybrad = yres/nrows/2 + 1;
488			if (rad > FTINY) {
489	greg	1.1	if (nrows >= yres && ncols >= xres)
490			rad *= (y_r + x_c)/2.0;
491
492	greg	2.9	if (thresh > FTINY) {
493			orad = CHECKRADTHRESHRADrad + 1;
494	greg	2.16	xrad = orad/x_c + xbrad;
495			yrad = orad/y_r + ybrad;
496	greg	2.9	obarsize = 2*orad + 1;
497			} else {
498			xrad = CHECKRAD*rad/x_c + 1;
499			yrad = CHECKRAD*rad/y_r + 1;
500			}
501	greg	1.1	initmask(); /* initialize filter table */
502	greg	2.9	} else {
503			xrad = xbrad;
504			yrad = ybrad;
505	greg	1.1	}
506	greg	1.17	barsize = 2*yrad + 1;
507	greg	1.1	scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
508	greg	2.10	if (scanin == NULL)
509			goto memerr;
510	greg	1.1	for (i = 0; i < barsize; i++) {
511			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
512	greg	2.10	if (scanin[i] == NULL)
513			goto memerr;
514	greg	1.1	}
515	greg	2.9	if (obarsize > 0) {
516			scoutbar = (COLOR *)malloc(obarsizesizeof(COLOR *));
517			greybar = (float *)malloc(obarsizesizeof(float *));
518	schorsch	2.26	if ((scoutbar == NULL) \| (greybar == NULL))
519	greg	2.10	goto memerr;
520	greg	2.9	for (i = 0; i < obarsize; i++) {
521			scoutbar[i] = (COLOR )malloc(ncolssizeof(COLOR));
522			greybar[i] = (float )malloc(ncolssizeof(float));
523	schorsch	2.26	if ((scoutbar[i] == NULL) \| (greybar[i] == NULL))
524	greg	2.10	goto memerr;
525	greg	2.9	}
526			} else {
527			scanout = (COLOR )malloc(ncolssizeof(COLOR));
528	greg	2.10	if (scanout == NULL)
529			goto memerr;
530	greg	1.1	}
531	greg	1.15	/* record pixel aspect ratio */
532	greg	1.12	if (!correctaspect) {
533	greg	1.19	d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
534	greg	1.15	if (!FEQ(d,1.0))
535	greg	1.12	fputaspect(d, stdout);
536			}
537	greg	1.15	/* record exposure */
538	greg	2.15	d = (*ourbright)(exposure);
539	greg	1.15	if (!FEQ(d,1.0))
540	greg	1.9	fputexpos(d, stdout);
541	greg	1.15	/* record color correction */
542			copycolor(ctmp, exposure);
543			scalecolor(ctmp, 1.0/d);
544			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
545			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
546			fputcolcor(ctmp, stdout);
547	greg	1.1	printf("\n");
548	greg	1.15	/* write out resolution */
549	greg	1.19	fputresolu(order, ncols, nrows, stdout);
550	greg	2.10	return;
551			memerr:
552			fprintf(stderr, "%s: out of memory\n", progname);
553			quit(1);
554	greg	2.9	}
555
556
557	schorsch	2.29	static void
558			scan2sync( /* synchronize grey averages and output scan */
559			int r
560			)
561	greg	2.9	{
562			static int nextrow = 0;
563			COLOR ctmp;
564			int ybot;
565			register int c;
566			/* average input scanlines */
567	greg	2.16	while (nextrow <= r+orad && nextrow < nrows) {
568	greg	2.19	ybot = (nextrow+.5)*yres/nrows;
569	greg	2.9	for (c = 0; c < ncols; c++) {
570	greg	2.19	dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow);
571	greg	2.15	greybar[nextrow%obarsize][c] = (*ourbright)(ctmp);
572	greg	2.9	}
573			/* and zero output scanline */
574	schorsch	2.25	memset((char )scoutbar[nextrow%obarsize], '\0', ncolssizeof(COLOR));
575	greg	2.9	nextrow++;
576			}
577			/* point to top scanline for output */
578			if (r-orad >= 0)
579			scanout = scoutbar[(r-orad)%obarsize];
580			else
581			scanout = NULL;
582			}
583
584
585	schorsch	2.29	static void
586			scan2flush(void) /* flush output buffer */
587	greg	2.9	{
588			register int r;
589
590			for (r = nrows-orad; r < nrows; r++)
591			if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0)
592			break;
593			if (fflush(stdout) < 0) {
594			fprintf(stderr, "%s: write error at end of pass2\n", progname);
595	greg	2.18	quit(1);
596	greg	2.9	}
597	greg	1.1	}
598
599
600	greg	2.21	void
601	greg	1.1	quit(code) /* remove temporary file and exit */
602			int code;
603			{
604			if (tfname != NULL)
605			unlink(tfname);
606			exit(code);
607			}