src/px/pfilt.c

#ifndef lint
static const char RCSid[] = "$Id: pfilt.c,v 2.22 2003/02/25 00:26:05 greg Exp $";
#endif
/*
 *  pfilt.c - program to post-process picture file.
 *
 *     9/26/85
 *     6/23/93  Added additional buffers for value spreading
 */

#include  <signal.h>

#include  "standard.h"
#include  "color.h"
#include  "view.h"
#include  "paths.h"

extern float  *matchlamp();

#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;


main(argc, argv)
int  argc;
char  **argv;
{
        extern int  headline();
        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);
        if (signal(SIGHUP, quit) == SIG_IGN)
                signal(SIGHUP, SIG_IGN);
        signal(SIGTERM, quit);
        signal(SIGPIPE, quit);
#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);
}


double
rgb_bright(clr)
COLOR  clr;
{
        return(bright(clr));
}


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


double  (*ourbright)() = rgb_bright;


int
headline(s)                             /* process line from header */
char  *s;
{
        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);
}


copyfile(in, out)                       /* copy a file */
register FILE  *in, *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);
        }
}


pass1(in)                               /* 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);
}


pass2(in)                       /* 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 */
}


scan2init()                     /* 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);
}


scan2sync(r)                    /* 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 */
                bzero((char *)scoutbar[nextrow%obarsize], ncols*sizeof(COLOR));
                nextrow++;
        }
                                        /* point to top scanline for output */
        if (r-orad >= 0)
                scanout = scoutbar[(r-orad)%obarsize];
        else
                scanout = NULL;
}


scan2flush()                    /* 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:	2.23
Committed:	Thu Jun 5 19:29:34 2003 UTC (20 years, 10 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.22:	+5 -11 lines
Log Message:	Macros for setting binary file mode. Replacing MSDOS by _WIN32.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.23	static const char RCSid[] = "$Id: pfilt.c,v 2.22 2003/02/25 00:26:05 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			#include <signal.h>
12
13	schorsch	2.23	#include "standard.h"
14	greg	1.1	#include "color.h"
15	greg	2.17	#include "view.h"
16	greg	2.3	#include "paths.h"
17
18	greg	1.13	extern float *matchlamp();
19	greg	1.1
20	greg	2.4	#define FEQ(a,b) ((a) >= .98(b) && (a) <= 1.02(b))
21	greg	1.15
22	greg	2.22	double CHECKRAD = 2.0; /* radius to check for filtering */
23	greg	1.1
24	greg	2.9	#define THRESHRAD 5.0 /* maximum sample spread in output */
25
26	greg	1.1	COLOR exposure = WHTCOLOR; /* exposure for the frame */
27
28	greg	2.4	double rad = 0.0; /* output pixel radius for filtering */
29	greg	1.1
30	greg	2.9	double thresh = 0.0; /* maximum contribution for subpixel */
31
32	greg	1.1	int nrows = 0; /* number of rows for output */
33			int ncols = 0; /* number of columns for output */
34
35	greg	2.4	double x_c = 1.0; /* ratio of output x size to input */
36			double y_r = 1.0; /* ratio of output y size to input */
37	greg	1.2
38	greg	1.1	int singlepass = 0; /* true means skip first pass */
39
40			int avghot = 0; /* true means average in bright spots */
41
42	greg	2.8	double hotlvl = 100.0; /* level considered "hot" */
43	greg	1.1
44			int npts = 0; /* (half) number of points for stars */
45
46	greg	2.4	double spread = 1e-4; /* spread for star points */
47	greg	1.1
48			char *tfname = NULL;
49
50	greg	2.11	char template[] = TEMPLATE;
51
52	greg	1.13	char lampdat = "lamp.tab"; / lamp data file */
53
54	greg	1.19	int order; /* scanline ordering of input */
55	greg	1.1	int xres, yres; /* resolution of input */
56	greg	2.4	double inpaspect = 1.0; /* pixel aspect ratio of input */
57	greg	1.12	int correctaspect = 0; /* aspect ratio correction? */
58	greg	1.1
59	greg	1.16	int wrongformat = 0;
60
61	greg	2.17	VIEW ourview = STDVIEW;
62			int gotview = 0;
63			int wrapfilt = 0; /* wrap filter horizontally? */
64
65	greg	2.18	int estatus = 0; /* exit status (for non-fatal errors) */
66
67	greg	2.9	int xrad; /* x search radius */
68			int yrad; /* y search radius */
69			int xbrad; /* x box size */
70			int ybrad; /* y box size */
71	greg	1.1
72			int barsize; /* size of input scan bar */
73			COLOR *scanin; / input scan bar */
74			COLOR scanout; / output scan line */
75	greg	2.9	COLOR *scoutbar; / output scan bar (if thresh > 0) */
76			float *greybar; / grey-averaged input values */
77			int obarsize = 0; /* size of output scan bar */
78			int orad = 0; /* output window radius */
79	greg	1.1
80			char *progname;
81
82
83			main(argc, argv)
84			int argc;
85			char **argv;
86			{
87	greg	2.21	extern int headline();
88	greg	1.1	FILE *fin;
89	greg	1.13	float *lampcolor;
90			char *lamptype = NULL;
91	greg	1.1	long fpos;
92	greg	2.4	double outaspect = 0.0;
93			double d;
94	greg	2.13	int i, j;
95	schorsch	2.23	SET_DEFAULT_BINARY();
96			SET_FILE_BINARY(stdin);
97			SET_FILE_BINARY(stdout);
98	greg	1.1	if (signal(SIGINT, quit) == SIG_IGN)
99			signal(SIGINT, SIG_IGN);
100			if (signal(SIGHUP, quit) == SIG_IGN)
101	greg	2.11	signal(SIGHUP, SIG_IGN);
102	greg	1.1	signal(SIGTERM, quit);
103			signal(SIGPIPE, quit);
104	greg	2.4	#ifdef SIGXCPU
105	greg	1.1	signal(SIGXCPU, quit);
106			signal(SIGXFSZ, quit);
107			#endif
108
109	greg	2.6	progname = argv[0] = fixargv0(argv[0]);
110	greg	1.1
111			for (i = 1; i < argc; i++)
112			if (argv[i][0] == '-')
113			switch (argv[i][1]) {
114			case 'x':
115	greg	1.3	i++;
116	greg	1.5	if (argv[i][0] == '/') {
117	greg	1.4	x_c = 1.0/atof(argv[i]+1);
118	greg	1.5	ncols = 0;
119			} else
120	greg	1.3	ncols = atoi(argv[i]);
121	greg	1.1	break;
122			case 'y':
123	greg	1.3	i++;
124	greg	1.5	if (argv[i][0] == '/') {
125	greg	1.4	y_r = 1.0/atof(argv[i]+1);
126	greg	1.5	nrows = 0;
127			} else
128	greg	1.3	nrows = atoi(argv[i]);
129	greg	1.1	break;
130	greg	1.12	case 'c':
131			correctaspect = !correctaspect;
132			break;
133	greg	1.9	case 'p':
134			i++;
135			outaspect = atof(argv[i]);
136			break;
137	greg	1.1	case 'e':
138			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
139			d = pow(2.0, atof(argv[i+1]));
140			else
141			d = atof(argv[i+1]);
142	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
143			fprintf(stderr,
144			"%s: exposure out of range\n",
145			argv[0]);
146	greg	2.18	quit(1);
147	greg	1.15	}
148	greg	1.1	switch (argv[i][2]) {
149			case '\0':
150			scalecolor(exposure, d);
151			break;
152			case 'r':
153			colval(exposure,RED) *= d;
154			break;
155			case 'g':
156			colval(exposure,GRN) *= d;
157			break;
158			case 'b':
159			colval(exposure,BLU) *= d;
160			break;
161			default:
162			goto badopt;
163			}
164			i++;
165			break;
166	greg	1.13	case 'f':
167			lampdat = argv[++i];
168			break;
169			case 't':
170			lamptype = argv[++i];
171			break;
172	greg	1.1	case '1':
173			singlepass = 1;
174			break;
175	greg	1.6	case '2':
176			singlepass = 0;
177			break;
178	greg	1.9	case 'n':
179	greg	1.1	npts = atoi(argv[++i]) / 2;
180			break;
181			case 's':
182			spread = atof(argv[++i]);
183			break;
184			case 'a':
185			avghot = !avghot;
186			break;
187			case 'h':
188			hotlvl = atof(argv[++i]);
189			break;
190			case 'r':
191			rad = atof(argv[++i]);
192			break;
193	greg	2.9	case 'm':
194			thresh = atof(argv[++i]);
195			if (rad <= FTINY)
196	greg	2.21	rad = 0.6;
197	greg	2.9	break;
198	greg	1.1	case 'b':
199	greg	2.9	rad = thresh = 0.0;
200	greg	1.1	break;
201			default:;
202			badopt:
203			fprintf(stderr, "%s: unknown option: %s\n",
204			progname, argv[i]);
205			quit(1);
206			break;
207			}
208			else
209			break;
210	greg	1.14	/* get lamp data (if necessary) */
211			if (lamptype != NULL) {
212			if (loadlamps(lampdat) < 0)
213			quit(1);
214			if ((lampcolor = matchlamp(lamptype)) == NULL) {
215			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
216			quit(1);
217			}
218	greg	2.13	for (j = 0; j < 3; j++)
219			if (lampcolor[j] > 1e-4)
220			colval(exposure,j) /= lampcolor[j];
221	greg	1.14	freelamps();
222			}
223			/* open input file */
224	greg	1.1	if (i == argc) {
225			if (singlepass)
226			fin = stdin;
227			else {
228	greg	2.11	tfname = mktemp(template);
229	greg	1.1	if ((fin = fopen(tfname, "w+")) == NULL) {
230			fprintf(stderr, "%s: can't create ", progname);
231			fprintf(stderr, "temp file \"%s\"\n", tfname);
232			quit(1);
233			}
234			copyfile(stdin, fin);
235			if (fseek(fin, 0L, 0) == -1) {
236			fprintf(stderr, "%s: seek fail\n", progname);
237			quit(1);
238			}
239			}
240			} else if (i == argc-1) {
241			if ((fin = fopen(argv[i], "r")) == NULL) {
242			fprintf(stderr, "%s: can't open file \"%s\"\n",
243			progname, argv[i]);
244			quit(1);
245			}
246			} else {
247			fprintf(stderr, "%s: bad # file arguments\n", progname);
248			quit(1);
249			}
250	greg	1.9	/* get header */
251	greg	1.16	getheader(fin, headline, NULL);
252			if (wrongformat) {
253			fprintf(stderr, "%s: input must be a Radiance picture\n",
254			progname);
255			quit(1);
256			}
257	greg	1.1	/* add new header info. */
258			printargs(i, argv, stdout);
259			/* get picture size */
260	greg	1.19	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
261	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
262			quit(1);
263			}
264	greg	1.19	if (!(order & YMAJOR))
265			inpaspect = 1.0/inpaspect;
266	greg	2.17	/* wrap around for cylindrical view? */
267			wrapfilt = gotview && ourview.type == VT_CYL &&
268			ourview.horiz >= 360.-FTINY && order & YMAJOR;
269	greg	1.9	/* compute output resolution */
270			if (ncols <= 0)
271	greg	1.4	ncols = x_c*xres + .5;
272	greg	1.9	if (nrows <= 0)
273	greg	1.4	nrows = y_r*yres + .5;
274	greg	1.9	if (outaspect > .01) {
275			d = inpaspect * yres/xres / outaspect;
276			if (d * ncols > nrows)
277			ncols = nrows / d;
278			else
279			nrows = ncols * d;
280			}
281			x_c = (double)ncols/xres;
282			y_r = (double)nrows/yres;
283	greg	1.1
284	greg	1.9	if (singlepass) { /* skip exposure, etc. */
285	greg	1.1	pass1default();
286			pass2(fin);
287			quit(0);
288			}
289
290			fpos = ftell(fin); /* save input file position */
291
292			pass1(fin);
293
294			if (fseek(fin, fpos, 0) == -1) {
295			fprintf(stderr, "%s: seek fail\n", progname);
296			quit(1);
297			}
298			pass2(fin);
299
300	greg	2.18	quit(estatus);
301	greg	1.1	}
302
303
304	greg	2.15	double
305			rgb_bright(clr)
306			COLOR clr;
307			{
308			return(bright(clr));
309			}
310
311
312			double
313			xyz_bright(clr)
314			COLOR clr;
315			{
316			return(clr[CIEY]);
317			}
318
319
320			double (*ourbright)() = rgb_bright;
321
322
323	gwlarson	2.20	int
324	greg	1.9	headline(s) /* process line from header */
325			char *s;
326			{
327	greg	1.16	char fmt[32];
328
329	greg	1.9	fputs(s, stdout); /* copy to output */
330			if (isaspect(s)) /* get aspect ratio */
331			inpaspect *= aspectval(s);
332	greg	2.15	else if (isexpos(s)) /* get exposure */
333	greg	2.8	hotlvl *= exposval(s);
334	greg	2.15	else if (formatval(fmt, s)) { /* get format */
335			wrongformat = 0;
336			if (!strcmp(COLRFMT, fmt))
337			ourbright = rgb_bright;
338			else if (!strcmp(CIEFMT, fmt))
339			ourbright = xyz_bright;
340			else
341			wrongformat = !globmatch(PICFMT, fmt);
342	greg	2.17	} else if (isview(s) && sscanview(&ourview, s) > 0)
343			gotview++;
344	gwlarson	2.20	return(0);
345	greg	1.9	}
346
347
348	greg	1.1	copyfile(in, out) /* copy a file */
349			register FILE in, out;
350			{
351			register int c;
352
353			while ((c = getc(in)) != EOF)
354			putc(c, out);
355
356			if (ferror(out)) {
357			fprintf(stderr, "%s: write error in copyfile\n", progname);
358			quit(1);
359			}
360			}
361
362
363			pass1(in) /* first pass of picture file */
364			FILE *in;
365			{
366			int i;
367			COLOR *scan;
368
369			pass1init();
370
371			scan = (COLOR )malloc(xressizeof(COLOR));
372			if (scan == NULL) {
373			fprintf(stderr, "%s: out of memory\n", progname);
374			quit(1);
375			}
376			for (i = 0; i < yres; i++) {
377			if (freadscan(scan, xres, in) < 0) {
378	greg	2.7	nrows = (long)nrows * i / yres; /* adjust frame */
379	greg	1.1	if (nrows <= 0) {
380			fprintf(stderr, "%s: empty frame\n", progname);
381			quit(1);
382			}
383			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
384	greg	2.7	progname, (int)(100L*i/yres));
385	greg	1.1	yres = i;
386	greg	1.11	y_r = (double)nrows/yres;
387	greg	2.18	estatus++;
388	greg	1.1	break;
389			}
390			pass1scan(scan, i);
391			}
392	greg	2.21	free((void *)scan);
393	greg	1.1	}
394
395
396			pass2(in) /* last pass on file, write to stdout */
397			FILE *in;
398			{
399			int yread;
400			int ycent, xcent;
401			int r, c;
402	greg	2.4
403	greg	1.1	pass2init();
404			scan2init();
405			yread = 0;
406			for (r = 0; r < nrows; r++) {
407	greg	2.19	ycent = (r+.5)*yres/nrows;
408	greg	1.1	while (yread <= ycent+yrad) {
409			if (yread < yres) {
410			if (freadscan(scanin[yread%barsize],
411			xres, in) < 0) {
412			fprintf(stderr,
413	greg	2.14	"%s: truncated input (y=%d)\n",
414	greg	1.1	progname, yres-1-yread);
415			quit(1);
416			}
417			pass2scan(scanin[yread%barsize], yread);
418			}
419			yread++;
420			}
421	greg	2.9	if (obarsize > 0)
422			scan2sync(r);
423	greg	1.1	for (c = 0; c < ncols; c++) {
424	greg	2.19	xcent = (c+.5)*xres/ncols;
425	greg	2.9	if (thresh > FTINY)
426			dothresh(xcent, ycent, c, r);
427			else if (rad > FTINY)
428			dogauss(scanout[c], xcent, ycent, c, r);
429			else
430	greg	1.1	dobox(scanout[c], xcent, ycent, c, r);
431			}
432	greg	2.9	if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) {
433	greg	1.1	fprintf(stderr, "%s: write error in pass2\n", progname);
434			quit(1);
435			}
436			}
437	greg	2.9	/* skip leftover input */
438	greg	1.10	while (yread < yres) {
439			if (freadscan(scanin[0], xres, in) < 0)
440			break;
441			yread++;
442			}
443	greg	2.9	scan2flush(); /* flush output */
444	greg	1.1	}
445
446
447			scan2init() /* prepare scanline arrays */
448			{
449	greg	1.15	COLOR ctmp;
450	greg	2.4	double d;
451	greg	1.1	register int i;
452
453	greg	2.9	xbrad = xres/ncols/2 + 1;
454			ybrad = yres/nrows/2 + 1;
455			if (rad > FTINY) {
456	greg	1.1	if (nrows >= yres && ncols >= xres)
457			rad *= (y_r + x_c)/2.0;
458
459	greg	2.9	if (thresh > FTINY) {
460			orad = CHECKRADTHRESHRADrad + 1;
461	greg	2.16	xrad = orad/x_c + xbrad;
462			yrad = orad/y_r + ybrad;
463	greg	2.9	obarsize = 2*orad + 1;
464			} else {
465			xrad = CHECKRAD*rad/x_c + 1;
466			yrad = CHECKRAD*rad/y_r + 1;
467			}
468	greg	1.1	initmask(); /* initialize filter table */
469	greg	2.9	} else {
470			xrad = xbrad;
471			yrad = ybrad;
472	greg	1.1	}
473	greg	1.17	barsize = 2*yrad + 1;
474	greg	1.1	scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
475	greg	2.10	if (scanin == NULL)
476			goto memerr;
477	greg	1.1	for (i = 0; i < barsize; i++) {
478			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
479	greg	2.10	if (scanin[i] == NULL)
480			goto memerr;
481	greg	1.1	}
482	greg	2.9	if (obarsize > 0) {
483			scoutbar = (COLOR *)malloc(obarsizesizeof(COLOR *));
484			greybar = (float *)malloc(obarsizesizeof(float *));
485	greg	2.10	if (scoutbar == NULL \| greybar == NULL)
486			goto memerr;
487	greg	2.9	for (i = 0; i < obarsize; i++) {
488			scoutbar[i] = (COLOR )malloc(ncolssizeof(COLOR));
489			greybar[i] = (float )malloc(ncolssizeof(float));
490	greg	2.10	if (scoutbar[i] == NULL \| greybar[i] == NULL)
491			goto memerr;
492	greg	2.9	}
493			} else {
494			scanout = (COLOR )malloc(ncolssizeof(COLOR));
495	greg	2.10	if (scanout == NULL)
496			goto memerr;
497	greg	1.1	}
498	greg	1.15	/* record pixel aspect ratio */
499	greg	1.12	if (!correctaspect) {
500	greg	1.19	d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
501	greg	1.15	if (!FEQ(d,1.0))
502	greg	1.12	fputaspect(d, stdout);
503			}
504	greg	1.15	/* record exposure */
505	greg	2.15	d = (*ourbright)(exposure);
506	greg	1.15	if (!FEQ(d,1.0))
507	greg	1.9	fputexpos(d, stdout);
508	greg	1.15	/* record color correction */
509			copycolor(ctmp, exposure);
510			scalecolor(ctmp, 1.0/d);
511			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
512			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
513			fputcolcor(ctmp, stdout);
514	greg	1.1	printf("\n");
515	greg	1.15	/* write out resolution */
516	greg	1.19	fputresolu(order, ncols, nrows, stdout);
517	greg	2.10	return;
518			memerr:
519			fprintf(stderr, "%s: out of memory\n", progname);
520			quit(1);
521	greg	2.9	}
522
523
524			scan2sync(r) /* synchronize grey averages and output scan */
525			int r;
526			{
527			static int nextrow = 0;
528			COLOR ctmp;
529			int ybot;
530			register int c;
531			/* average input scanlines */
532	greg	2.16	while (nextrow <= r+orad && nextrow < nrows) {
533	greg	2.19	ybot = (nextrow+.5)*yres/nrows;
534	greg	2.9	for (c = 0; c < ncols; c++) {
535	greg	2.19	dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow);
536	greg	2.15	greybar[nextrow%obarsize][c] = (*ourbright)(ctmp);
537	greg	2.9	}
538			/* and zero output scanline */
539			bzero((char )scoutbar[nextrow%obarsize], ncolssizeof(COLOR));
540			nextrow++;
541			}
542			/* point to top scanline for output */
543			if (r-orad >= 0)
544			scanout = scoutbar[(r-orad)%obarsize];
545			else
546			scanout = NULL;
547			}
548
549
550			scan2flush() /* flush output buffer */
551			{
552			register int r;
553
554			for (r = nrows-orad; r < nrows; r++)
555			if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0)
556			break;
557			if (fflush(stdout) < 0) {
558			fprintf(stderr, "%s: write error at end of pass2\n", progname);
559	greg	2.18	quit(1);
560	greg	2.9	}
561	greg	1.1	}
562
563
564	greg	2.21	void
565	greg	1.1	quit(code) /* remove temporary file and exit */
566			int code;
567			{
568			if (tfname != NULL)
569			unlink(tfname);
570			exit(code);
571			}