src/px/pfilt.c

#ifndef lint
static const char RCSid[] = "$Id: pfilt.c,v 2.23 2003/06/05 19:29:34 schorsch 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  "platform.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);
#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);
}


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:	2.24
Committed:	Sun Jun 8 12:03:10 2003 UTC (20 years, 10 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.23:	+6 -1 lines
Log Message:	Reduced compile warnings/errors on Windows.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.24	static const char RCSid[] = "$Id: pfilt.c,v 2.23 2003/06/05 19:29:34 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			#include <signal.h>
12
13	schorsch	2.23	#include "standard.h"
14	schorsch	2.24	#include "platform.h"
15	greg	1.1	#include "color.h"
16	greg	2.17	#include "view.h"
17	greg	2.3	#include "paths.h"
18
19	greg	1.13	extern float *matchlamp();
20	greg	1.1
21	greg	2.4	#define FEQ(a,b) ((a) >= .98(b) && (a) <= 1.02(b))
22	greg	1.15
23	greg	2.22	double CHECKRAD = 2.0; /* radius to check for filtering */
24	greg	1.1
25	greg	2.9	#define THRESHRAD 5.0 /* maximum sample spread in output */
26
27	greg	1.1	COLOR exposure = WHTCOLOR; /* exposure for the frame */
28
29	greg	2.4	double rad = 0.0; /* output pixel radius for filtering */
30	greg	1.1
31	greg	2.9	double thresh = 0.0; /* maximum contribution for subpixel */
32
33	greg	1.1	int nrows = 0; /* number of rows for output */
34			int ncols = 0; /* number of columns for output */
35
36	greg	2.4	double x_c = 1.0; /* ratio of output x size to input */
37			double y_r = 1.0; /* ratio of output y size to input */
38	greg	1.2
39	greg	1.1	int singlepass = 0; /* true means skip first pass */
40
41			int avghot = 0; /* true means average in bright spots */
42
43	greg	2.8	double hotlvl = 100.0; /* level considered "hot" */
44	greg	1.1
45			int npts = 0; /* (half) number of points for stars */
46
47	greg	2.4	double spread = 1e-4; /* spread for star points */
48	greg	1.1
49			char *tfname = NULL;
50
51	greg	2.11	char template[] = TEMPLATE;
52
53	greg	1.13	char lampdat = "lamp.tab"; / lamp data file */
54
55	greg	1.19	int order; /* scanline ordering of input */
56	greg	1.1	int xres, yres; /* resolution of input */
57	greg	2.4	double inpaspect = 1.0; /* pixel aspect ratio of input */
58	greg	1.12	int correctaspect = 0; /* aspect ratio correction? */
59	greg	1.1
60	greg	1.16	int wrongformat = 0;
61
62	greg	2.17	VIEW ourview = STDVIEW;
63			int gotview = 0;
64			int wrapfilt = 0; /* wrap filter horizontally? */
65
66	greg	2.18	int estatus = 0; /* exit status (for non-fatal errors) */
67
68	greg	2.9	int xrad; /* x search radius */
69			int yrad; /* y search radius */
70			int xbrad; /* x box size */
71			int ybrad; /* y box size */
72	greg	1.1
73			int barsize; /* size of input scan bar */
74			COLOR *scanin; / input scan bar */
75			COLOR scanout; / output scan line */
76	greg	2.9	COLOR *scoutbar; / output scan bar (if thresh > 0) */
77			float *greybar; / grey-averaged input values */
78			int obarsize = 0; /* size of output scan bar */
79			int orad = 0; /* output window radius */
80	greg	1.1
81			char *progname;
82
83
84			main(argc, argv)
85			int argc;
86			char **argv;
87			{
88	greg	2.21	extern int headline();
89	greg	1.1	FILE *fin;
90	greg	1.13	float *lampcolor;
91			char *lamptype = NULL;
92	greg	1.1	long fpos;
93	greg	2.4	double outaspect = 0.0;
94			double d;
95	greg	2.13	int i, j;
96	schorsch	2.23	SET_DEFAULT_BINARY();
97			SET_FILE_BINARY(stdin);
98			SET_FILE_BINARY(stdout);
99	greg	1.1	if (signal(SIGINT, quit) == SIG_IGN)
100			signal(SIGINT, SIG_IGN);
101	schorsch	2.24	#ifdef SIGHUP
102	greg	1.1	if (signal(SIGHUP, quit) == SIG_IGN)
103	greg	2.11	signal(SIGHUP, SIG_IGN);
104	schorsch	2.24	#endif
105	greg	1.1	signal(SIGTERM, quit);
106	schorsch	2.24	#ifdef SIGPIPE
107	greg	1.1	signal(SIGPIPE, quit);
108	schorsch	2.24	#endif
109	greg	2.4	#ifdef SIGXCPU
110	greg	1.1	signal(SIGXCPU, quit);
111			signal(SIGXFSZ, quit);
112			#endif
113
114	greg	2.6	progname = argv[0] = fixargv0(argv[0]);
115	greg	1.1
116			for (i = 1; i < argc; i++)
117			if (argv[i][0] == '-')
118			switch (argv[i][1]) {
119			case 'x':
120	greg	1.3	i++;
121	greg	1.5	if (argv[i][0] == '/') {
122	greg	1.4	x_c = 1.0/atof(argv[i]+1);
123	greg	1.5	ncols = 0;
124			} else
125	greg	1.3	ncols = atoi(argv[i]);
126	greg	1.1	break;
127			case 'y':
128	greg	1.3	i++;
129	greg	1.5	if (argv[i][0] == '/') {
130	greg	1.4	y_r = 1.0/atof(argv[i]+1);
131	greg	1.5	nrows = 0;
132			} else
133	greg	1.3	nrows = atoi(argv[i]);
134	greg	1.1	break;
135	greg	1.12	case 'c':
136			correctaspect = !correctaspect;
137			break;
138	greg	1.9	case 'p':
139			i++;
140			outaspect = atof(argv[i]);
141			break;
142	greg	1.1	case 'e':
143			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
144			d = pow(2.0, atof(argv[i+1]));
145			else
146			d = atof(argv[i+1]);
147	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
148			fprintf(stderr,
149			"%s: exposure out of range\n",
150			argv[0]);
151	greg	2.18	quit(1);
152	greg	1.15	}
153	greg	1.1	switch (argv[i][2]) {
154			case '\0':
155			scalecolor(exposure, d);
156			break;
157			case 'r':
158			colval(exposure,RED) *= d;
159			break;
160			case 'g':
161			colval(exposure,GRN) *= d;
162			break;
163			case 'b':
164			colval(exposure,BLU) *= d;
165			break;
166			default:
167			goto badopt;
168			}
169			i++;
170			break;
171	greg	1.13	case 'f':
172			lampdat = argv[++i];
173			break;
174			case 't':
175			lamptype = argv[++i];
176			break;
177	greg	1.1	case '1':
178			singlepass = 1;
179			break;
180	greg	1.6	case '2':
181			singlepass = 0;
182			break;
183	greg	1.9	case 'n':
184	greg	1.1	npts = atoi(argv[++i]) / 2;
185			break;
186			case 's':
187			spread = atof(argv[++i]);
188			break;
189			case 'a':
190			avghot = !avghot;
191			break;
192			case 'h':
193			hotlvl = atof(argv[++i]);
194			break;
195			case 'r':
196			rad = atof(argv[++i]);
197			break;
198	greg	2.9	case 'm':
199			thresh = atof(argv[++i]);
200			if (rad <= FTINY)
201	greg	2.21	rad = 0.6;
202	greg	2.9	break;
203	greg	1.1	case 'b':
204	greg	2.9	rad = thresh = 0.0;
205	greg	1.1	break;
206			default:;
207			badopt:
208			fprintf(stderr, "%s: unknown option: %s\n",
209			progname, argv[i]);
210			quit(1);
211			break;
212			}
213			else
214			break;
215	greg	1.14	/* get lamp data (if necessary) */
216			if (lamptype != NULL) {
217			if (loadlamps(lampdat) < 0)
218			quit(1);
219			if ((lampcolor = matchlamp(lamptype)) == NULL) {
220			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
221			quit(1);
222			}
223	greg	2.13	for (j = 0; j < 3; j++)
224			if (lampcolor[j] > 1e-4)
225			colval(exposure,j) /= lampcolor[j];
226	greg	1.14	freelamps();
227			}
228			/* open input file */
229	greg	1.1	if (i == argc) {
230			if (singlepass)
231			fin = stdin;
232			else {
233	greg	2.11	tfname = mktemp(template);
234	greg	1.1	if ((fin = fopen(tfname, "w+")) == NULL) {
235			fprintf(stderr, "%s: can't create ", progname);
236			fprintf(stderr, "temp file \"%s\"\n", tfname);
237			quit(1);
238			}
239			copyfile(stdin, fin);
240			if (fseek(fin, 0L, 0) == -1) {
241			fprintf(stderr, "%s: seek fail\n", progname);
242			quit(1);
243			}
244			}
245			} else if (i == argc-1) {
246			if ((fin = fopen(argv[i], "r")) == NULL) {
247			fprintf(stderr, "%s: can't open file \"%s\"\n",
248			progname, argv[i]);
249			quit(1);
250			}
251			} else {
252			fprintf(stderr, "%s: bad # file arguments\n", progname);
253			quit(1);
254			}
255	greg	1.9	/* get header */
256	greg	1.16	getheader(fin, headline, NULL);
257			if (wrongformat) {
258			fprintf(stderr, "%s: input must be a Radiance picture\n",
259			progname);
260			quit(1);
261			}
262	greg	1.1	/* add new header info. */
263			printargs(i, argv, stdout);
264			/* get picture size */
265	greg	1.19	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
266	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
267			quit(1);
268			}
269	greg	1.19	if (!(order & YMAJOR))
270			inpaspect = 1.0/inpaspect;
271	greg	2.17	/* wrap around for cylindrical view? */
272			wrapfilt = gotview && ourview.type == VT_CYL &&
273			ourview.horiz >= 360.-FTINY && order & YMAJOR;
274	greg	1.9	/* compute output resolution */
275			if (ncols <= 0)
276	greg	1.4	ncols = x_c*xres + .5;
277	greg	1.9	if (nrows <= 0)
278	greg	1.4	nrows = y_r*yres + .5;
279	greg	1.9	if (outaspect > .01) {
280			d = inpaspect * yres/xres / outaspect;
281			if (d * ncols > nrows)
282			ncols = nrows / d;
283			else
284			nrows = ncols * d;
285			}
286			x_c = (double)ncols/xres;
287			y_r = (double)nrows/yres;
288	greg	1.1
289	greg	1.9	if (singlepass) { /* skip exposure, etc. */
290	greg	1.1	pass1default();
291			pass2(fin);
292			quit(0);
293			}
294
295			fpos = ftell(fin); /* save input file position */
296
297			pass1(fin);
298
299			if (fseek(fin, fpos, 0) == -1) {
300			fprintf(stderr, "%s: seek fail\n", progname);
301			quit(1);
302			}
303			pass2(fin);
304
305	greg	2.18	quit(estatus);
306	greg	1.1	}
307
308
309	greg	2.15	double
310			rgb_bright(clr)
311			COLOR clr;
312			{
313			return(bright(clr));
314			}
315
316
317			double
318			xyz_bright(clr)
319			COLOR clr;
320			{
321			return(clr[CIEY]);
322			}
323
324
325			double (*ourbright)() = rgb_bright;
326
327
328	gwlarson	2.20	int
329	greg	1.9	headline(s) /* process line from header */
330			char *s;
331			{
332	greg	1.16	char fmt[32];
333
334	greg	1.9	fputs(s, stdout); /* copy to output */
335			if (isaspect(s)) /* get aspect ratio */
336			inpaspect *= aspectval(s);
337	greg	2.15	else if (isexpos(s)) /* get exposure */
338	greg	2.8	hotlvl *= exposval(s);
339	greg	2.15	else if (formatval(fmt, s)) { /* get format */
340			wrongformat = 0;
341			if (!strcmp(COLRFMT, fmt))
342			ourbright = rgb_bright;
343			else if (!strcmp(CIEFMT, fmt))
344			ourbright = xyz_bright;
345			else
346			wrongformat = !globmatch(PICFMT, fmt);
347	greg	2.17	} else if (isview(s) && sscanview(&ourview, s) > 0)
348			gotview++;
349	gwlarson	2.20	return(0);
350	greg	1.9	}
351
352
353	greg	1.1	copyfile(in, out) /* copy a file */
354			register FILE in, out;
355			{
356			register int c;
357
358			while ((c = getc(in)) != EOF)
359			putc(c, out);
360
361			if (ferror(out)) {
362			fprintf(stderr, "%s: write error in copyfile\n", progname);
363			quit(1);
364			}
365			}
366
367
368			pass1(in) /* first pass of picture file */
369			FILE *in;
370			{
371			int i;
372			COLOR *scan;
373
374			pass1init();
375
376			scan = (COLOR )malloc(xressizeof(COLOR));
377			if (scan == NULL) {
378			fprintf(stderr, "%s: out of memory\n", progname);
379			quit(1);
380			}
381			for (i = 0; i < yres; i++) {
382			if (freadscan(scan, xres, in) < 0) {
383	greg	2.7	nrows = (long)nrows * i / yres; /* adjust frame */
384	greg	1.1	if (nrows <= 0) {
385			fprintf(stderr, "%s: empty frame\n", progname);
386			quit(1);
387			}
388			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
389	greg	2.7	progname, (int)(100L*i/yres));
390	greg	1.1	yres = i;
391	greg	1.11	y_r = (double)nrows/yres;
392	greg	2.18	estatus++;
393	greg	1.1	break;
394			}
395			pass1scan(scan, i);
396			}
397	greg	2.21	free((void *)scan);
398	greg	1.1	}
399
400
401			pass2(in) /* last pass on file, write to stdout */
402			FILE *in;
403			{
404			int yread;
405			int ycent, xcent;
406			int r, c;
407	greg	2.4
408	greg	1.1	pass2init();
409			scan2init();
410			yread = 0;
411			for (r = 0; r < nrows; r++) {
412	greg	2.19	ycent = (r+.5)*yres/nrows;
413	greg	1.1	while (yread <= ycent+yrad) {
414			if (yread < yres) {
415			if (freadscan(scanin[yread%barsize],
416			xres, in) < 0) {
417			fprintf(stderr,
418	greg	2.14	"%s: truncated input (y=%d)\n",
419	greg	1.1	progname, yres-1-yread);
420			quit(1);
421			}
422			pass2scan(scanin[yread%barsize], yread);
423			}
424			yread++;
425			}
426	greg	2.9	if (obarsize > 0)
427			scan2sync(r);
428	greg	1.1	for (c = 0; c < ncols; c++) {
429	greg	2.19	xcent = (c+.5)*xres/ncols;
430	greg	2.9	if (thresh > FTINY)
431			dothresh(xcent, ycent, c, r);
432			else if (rad > FTINY)
433			dogauss(scanout[c], xcent, ycent, c, r);
434			else
435	greg	1.1	dobox(scanout[c], xcent, ycent, c, r);
436			}
437	greg	2.9	if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) {
438	greg	1.1	fprintf(stderr, "%s: write error in pass2\n", progname);
439			quit(1);
440			}
441			}
442	greg	2.9	/* skip leftover input */
443	greg	1.10	while (yread < yres) {
444			if (freadscan(scanin[0], xres, in) < 0)
445			break;
446			yread++;
447			}
448	greg	2.9	scan2flush(); /* flush output */
449	greg	1.1	}
450
451
452			scan2init() /* prepare scanline arrays */
453			{
454	greg	1.15	COLOR ctmp;
455	greg	2.4	double d;
456	greg	1.1	register int i;
457
458	greg	2.9	xbrad = xres/ncols/2 + 1;
459			ybrad = yres/nrows/2 + 1;
460			if (rad > FTINY) {
461	greg	1.1	if (nrows >= yres && ncols >= xres)
462			rad *= (y_r + x_c)/2.0;
463
464	greg	2.9	if (thresh > FTINY) {
465			orad = CHECKRADTHRESHRADrad + 1;
466	greg	2.16	xrad = orad/x_c + xbrad;
467			yrad = orad/y_r + ybrad;
468	greg	2.9	obarsize = 2*orad + 1;
469			} else {
470			xrad = CHECKRAD*rad/x_c + 1;
471			yrad = CHECKRAD*rad/y_r + 1;
472			}
473	greg	1.1	initmask(); /* initialize filter table */
474	greg	2.9	} else {
475			xrad = xbrad;
476			yrad = ybrad;
477	greg	1.1	}
478	greg	1.17	barsize = 2*yrad + 1;
479	greg	1.1	scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
480	greg	2.10	if (scanin == NULL)
481			goto memerr;
482	greg	1.1	for (i = 0; i < barsize; i++) {
483			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
484	greg	2.10	if (scanin[i] == NULL)
485			goto memerr;
486	greg	1.1	}
487	greg	2.9	if (obarsize > 0) {
488			scoutbar = (COLOR *)malloc(obarsizesizeof(COLOR *));
489			greybar = (float *)malloc(obarsizesizeof(float *));
490	greg	2.10	if (scoutbar == NULL \| greybar == NULL)
491			goto memerr;
492	greg	2.9	for (i = 0; i < obarsize; i++) {
493			scoutbar[i] = (COLOR )malloc(ncolssizeof(COLOR));
494			greybar[i] = (float )malloc(ncolssizeof(float));
495	greg	2.10	if (scoutbar[i] == NULL \| greybar[i] == NULL)
496			goto memerr;
497	greg	2.9	}
498			} else {
499			scanout = (COLOR )malloc(ncolssizeof(COLOR));
500	greg	2.10	if (scanout == NULL)
501			goto memerr;
502	greg	1.1	}
503	greg	1.15	/* record pixel aspect ratio */
504	greg	1.12	if (!correctaspect) {
505	greg	1.19	d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
506	greg	1.15	if (!FEQ(d,1.0))
507	greg	1.12	fputaspect(d, stdout);
508			}
509	greg	1.15	/* record exposure */
510	greg	2.15	d = (*ourbright)(exposure);
511	greg	1.15	if (!FEQ(d,1.0))
512	greg	1.9	fputexpos(d, stdout);
513	greg	1.15	/* record color correction */
514			copycolor(ctmp, exposure);
515			scalecolor(ctmp, 1.0/d);
516			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
517			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
518			fputcolcor(ctmp, stdout);
519	greg	1.1	printf("\n");
520	greg	1.15	/* write out resolution */
521	greg	1.19	fputresolu(order, ncols, nrows, stdout);
522	greg	2.10	return;
523			memerr:
524			fprintf(stderr, "%s: out of memory\n", progname);
525			quit(1);
526	greg	2.9	}
527
528
529			scan2sync(r) /* synchronize grey averages and output scan */
530			int r;
531			{
532			static int nextrow = 0;
533			COLOR ctmp;
534			int ybot;
535			register int c;
536			/* average input scanlines */
537	greg	2.16	while (nextrow <= r+orad && nextrow < nrows) {
538	greg	2.19	ybot = (nextrow+.5)*yres/nrows;
539	greg	2.9	for (c = 0; c < ncols; c++) {
540	greg	2.19	dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow);
541	greg	2.15	greybar[nextrow%obarsize][c] = (*ourbright)(ctmp);
542	greg	2.9	}
543			/* and zero output scanline */
544			bzero((char )scoutbar[nextrow%obarsize], ncolssizeof(COLOR));
545			nextrow++;
546			}
547			/* point to top scanline for output */
548			if (r-orad >= 0)
549			scanout = scoutbar[(r-orad)%obarsize];
550			else
551			scanout = NULL;
552			}
553
554
555			scan2flush() /* flush output buffer */
556			{
557			register int r;
558
559			for (r = nrows-orad; r < nrows; r++)
560			if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0)
561			break;
562			if (fflush(stdout) < 0) {
563			fprintf(stderr, "%s: write error at end of pass2\n", progname);
564	greg	2.18	quit(1);
565	greg	2.9	}
566	greg	1.1	}
567
568
569	greg	2.21	void
570	greg	1.1	quit(code) /* remove temporary file and exit */
571			int code;
572			{
573			if (tfname != NULL)
574			unlink(tfname);
575			exit(code);
576			}