src/px/pfilt.c

#ifndef lint
static const char RCSid[] = "$Id: pfilt.c,v 2.27 2003/10/22 02:06:35 greg Exp $";
#endif
/*
 *  pfilt.c - program to post-process picture file.
 *
 *     9/26/85
 *     6/23/93  Added additional buffers for value spreading
 */

#include  "copyright.h"

#include  <signal.h>
#include  <string.h>

#include  "platform.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;

static gethfunc headline;


main(argc, argv)
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);
}


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


double
xyz_bright(clr)
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);
}


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 */
                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;
}


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:	2.28
Committed:	Fri Jan 2 12:47:01 2004 UTC (20 years, 4 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.27:	+8 -5 lines
Log Message:	Fixed typing/prototype of getheader() and its callback.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.28	static const char RCSid[] = "$Id: pfilt.c,v 2.27 2003/10/22 02:06:35 greg Exp $";
3	greg	1.1	#endif
4			/*
5			* pfilt.c - program to post-process picture file.
6			*
7			* 9/26/85
8	greg	2.9	* 6/23/93 Added additional buffers for value spreading
9	greg	1.1	*/
10
11	schorsch	2.25	#include "copyright.h"
12
13	greg	1.1	#include <signal.h>
14	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	greg	1.1	#include "color.h"
19	greg	2.17	#include "view.h"
20	greg	2.3	#include "paths.h"
21
22	greg	1.13	extern float *matchlamp();
23	greg	1.1
24	greg	2.4	#define FEQ(a,b) ((a) >= .98(b) && (a) <= 1.02(b))
25	greg	1.15
26	greg	2.22	double CHECKRAD = 2.0; /* radius to check for filtering */
27	greg	1.1
28	greg	2.9	#define THRESHRAD 5.0 /* maximum sample spread in output */
29
30	greg	1.1	COLOR exposure = WHTCOLOR; /* exposure for the frame */
31
32	greg	2.4	double rad = 0.0; /* output pixel radius for filtering */
33	greg	1.1
34	greg	2.9	double thresh = 0.0; /* maximum contribution for subpixel */
35
36	greg	1.1	int nrows = 0; /* number of rows for output */
37			int ncols = 0; /* number of columns for output */
38
39	greg	2.4	double x_c = 1.0; /* ratio of output x size to input */
40			double y_r = 1.0; /* ratio of output y size to input */
41	greg	1.2
42	greg	1.1	int singlepass = 0; /* true means skip first pass */
43
44			int avghot = 0; /* true means average in bright spots */
45
46	greg	2.8	double hotlvl = 100.0; /* level considered "hot" */
47	greg	1.1
48			int npts = 0; /* (half) number of points for stars */
49
50	greg	2.4	double spread = 1e-4; /* spread for star points */
51	greg	1.1
52			char *tfname = NULL;
53
54	greg	2.11	char template[] = TEMPLATE;
55
56	greg	1.13	char lampdat = "lamp.tab"; / lamp data file */
57
58	greg	1.19	int order; /* scanline ordering of input */
59	greg	1.1	int xres, yres; /* resolution of input */
60	greg	2.4	double inpaspect = 1.0; /* pixel aspect ratio of input */
61	greg	1.12	int correctaspect = 0; /* aspect ratio correction? */
62	greg	1.1
63	greg	1.16	int wrongformat = 0;
64
65	greg	2.17	VIEW ourview = STDVIEW;
66			int gotview = 0;
67			int wrapfilt = 0; /* wrap filter horizontally? */
68
69	greg	2.18	int estatus = 0; /* exit status (for non-fatal errors) */
70
71	greg	2.9	int xrad; /* x search radius */
72			int yrad; /* y search radius */
73			int xbrad; /* x box size */
74			int ybrad; /* y box size */
75	greg	1.1
76			int barsize; /* size of input scan bar */
77			COLOR *scanin; / input scan bar */
78			COLOR scanout; / output scan line */
79	greg	2.9	COLOR *scoutbar; / output scan bar (if thresh > 0) */
80			float *greybar; / grey-averaged input values */
81			int obarsize = 0; /* size of output scan bar */
82			int orad = 0; /* output window radius */
83	greg	1.1
84			char *progname;
85
86	schorsch	2.28	static gethfunc headline;
87
88	greg	1.1
89			main(argc, argv)
90			int argc;
91			char **argv;
92			{
93			FILE *fin;
94	greg	1.13	float *lampcolor;
95			char *lamptype = NULL;
96	greg	1.1	long fpos;
97	greg	2.4	double outaspect = 0.0;
98			double d;
99	greg	2.13	int i, j;
100	schorsch	2.23	SET_DEFAULT_BINARY();
101			SET_FILE_BINARY(stdin);
102			SET_FILE_BINARY(stdout);
103	greg	1.1	if (signal(SIGINT, quit) == SIG_IGN)
104			signal(SIGINT, SIG_IGN);
105	schorsch	2.24	#ifdef SIGHUP
106	greg	1.1	if (signal(SIGHUP, quit) == SIG_IGN)
107	greg	2.11	signal(SIGHUP, SIG_IGN);
108	schorsch	2.24	#endif
109	greg	1.1	signal(SIGTERM, quit);
110	schorsch	2.24	#ifdef SIGPIPE
111	greg	1.1	signal(SIGPIPE, quit);
112	schorsch	2.24	#endif
113	greg	2.4	#ifdef SIGXCPU
114	greg	1.1	signal(SIGXCPU, quit);
115			signal(SIGXFSZ, quit);
116			#endif
117
118	greg	2.6	progname = argv[0] = fixargv0(argv[0]);
119	greg	1.1
120			for (i = 1; i < argc; i++)
121			if (argv[i][0] == '-')
122			switch (argv[i][1]) {
123			case 'x':
124	greg	1.3	i++;
125	greg	1.5	if (argv[i][0] == '/') {
126	greg	1.4	x_c = 1.0/atof(argv[i]+1);
127	greg	1.5	ncols = 0;
128			} else
129	greg	1.3	ncols = atoi(argv[i]);
130	greg	1.1	break;
131			case 'y':
132	greg	1.3	i++;
133	greg	1.5	if (argv[i][0] == '/') {
134	greg	1.4	y_r = 1.0/atof(argv[i]+1);
135	greg	1.5	nrows = 0;
136			} else
137	greg	1.3	nrows = atoi(argv[i]);
138	greg	1.1	break;
139	greg	1.12	case 'c':
140			correctaspect = !correctaspect;
141			break;
142	greg	1.9	case 'p':
143			i++;
144			outaspect = atof(argv[i]);
145			break;
146	greg	1.1	case 'e':
147			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
148			d = pow(2.0, atof(argv[i+1]));
149			else
150			d = atof(argv[i+1]);
151	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
152			fprintf(stderr,
153			"%s: exposure out of range\n",
154			argv[0]);
155	greg	2.18	quit(1);
156	greg	1.15	}
157	greg	1.1	switch (argv[i][2]) {
158			case '\0':
159			scalecolor(exposure, d);
160			break;
161			case 'r':
162			colval(exposure,RED) *= d;
163			break;
164			case 'g':
165			colval(exposure,GRN) *= d;
166			break;
167			case 'b':
168			colval(exposure,BLU) *= d;
169			break;
170			default:
171			goto badopt;
172			}
173			i++;
174			break;
175	greg	1.13	case 'f':
176			lampdat = argv[++i];
177			break;
178			case 't':
179			lamptype = argv[++i];
180			break;
181	greg	1.1	case '1':
182			singlepass = 1;
183			break;
184	greg	1.6	case '2':
185			singlepass = 0;
186			break;
187	greg	1.9	case 'n':
188	greg	1.1	npts = atoi(argv[++i]) / 2;
189			break;
190			case 's':
191			spread = atof(argv[++i]);
192			break;
193			case 'a':
194			avghot = !avghot;
195			break;
196			case 'h':
197			hotlvl = atof(argv[++i]);
198			break;
199			case 'r':
200			rad = atof(argv[++i]);
201			break;
202	greg	2.9	case 'm':
203			thresh = atof(argv[++i]);
204			if (rad <= FTINY)
205	greg	2.21	rad = 0.6;
206	greg	2.9	break;
207	greg	1.1	case 'b':
208	greg	2.9	rad = thresh = 0.0;
209	greg	1.1	break;
210			default:;
211			badopt:
212			fprintf(stderr, "%s: unknown option: %s\n",
213			progname, argv[i]);
214			quit(1);
215			break;
216			}
217			else
218			break;
219	greg	1.14	/* get lamp data (if necessary) */
220			if (lamptype != NULL) {
221			if (loadlamps(lampdat) < 0)
222			quit(1);
223			if ((lampcolor = matchlamp(lamptype)) == NULL) {
224			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
225			quit(1);
226			}
227	greg	2.13	for (j = 0; j < 3; j++)
228			if (lampcolor[j] > 1e-4)
229			colval(exposure,j) /= lampcolor[j];
230	greg	1.14	freelamps();
231			}
232			/* open input file */
233	greg	1.1	if (i == argc) {
234			if (singlepass)
235			fin = stdin;
236			else {
237	greg	2.11	tfname = mktemp(template);
238	greg	1.1	if ((fin = fopen(tfname, "w+")) == NULL) {
239			fprintf(stderr, "%s: can't create ", progname);
240			fprintf(stderr, "temp file \"%s\"\n", tfname);
241			quit(1);
242			}
243			copyfile(stdin, fin);
244			if (fseek(fin, 0L, 0) == -1) {
245			fprintf(stderr, "%s: seek fail\n", progname);
246			quit(1);
247			}
248			}
249			} else if (i == argc-1) {
250			if ((fin = fopen(argv[i], "r")) == NULL) {
251			fprintf(stderr, "%s: can't open file \"%s\"\n",
252			progname, argv[i]);
253			quit(1);
254			}
255			} else {
256			fprintf(stderr, "%s: bad # file arguments\n", progname);
257			quit(1);
258			}
259	greg	1.9	/* get header */
260	greg	1.16	getheader(fin, headline, NULL);
261			if (wrongformat) {
262			fprintf(stderr, "%s: input must be a Radiance picture\n",
263			progname);
264			quit(1);
265			}
266	greg	1.1	/* add new header info. */
267			printargs(i, argv, stdout);
268			/* get picture size */
269	greg	1.19	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
270	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
271			quit(1);
272			}
273	greg	1.19	if (!(order & YMAJOR))
274			inpaspect = 1.0/inpaspect;
275	greg	2.17	/* wrap around for cylindrical view? */
276			wrapfilt = gotview && ourview.type == VT_CYL &&
277			ourview.horiz >= 360.-FTINY && order & YMAJOR;
278	greg	1.9	/* compute output resolution */
279			if (ncols <= 0)
280	greg	1.4	ncols = x_c*xres + .5;
281	greg	1.9	if (nrows <= 0)
282	greg	1.4	nrows = y_r*yres + .5;
283	greg	1.9	if (outaspect > .01) {
284			d = inpaspect * yres/xres / outaspect;
285			if (d * ncols > nrows)
286			ncols = nrows / d;
287			else
288			nrows = ncols * d;
289			}
290			x_c = (double)ncols/xres;
291			y_r = (double)nrows/yres;
292	greg	1.1
293	greg	1.9	if (singlepass) { /* skip exposure, etc. */
294	greg	1.1	pass1default();
295			pass2(fin);
296			quit(0);
297			}
298
299			fpos = ftell(fin); /* save input file position */
300
301			pass1(fin);
302
303			if (fseek(fin, fpos, 0) == -1) {
304			fprintf(stderr, "%s: seek fail\n", progname);
305			quit(1);
306			}
307			pass2(fin);
308
309	greg	2.18	quit(estatus);
310	greg	1.1	}
311
312
313	greg	2.15	double
314			rgb_bright(clr)
315			COLOR clr;
316			{
317			return(bright(clr));
318			}
319
320
321			double
322			xyz_bright(clr)
323			COLOR clr;
324			{
325			return(clr[CIEY]);
326			}
327
328
329			double (*ourbright)() = rgb_bright;
330
331
332	schorsch	2.28	static int
333			headline( /* process line from header */
334			char *s,
335			void *p
336			)
337	greg	1.9	{
338	greg	1.16	char fmt[32];
339
340	greg	1.9	fputs(s, stdout); /* copy to output */
341			if (isaspect(s)) /* get aspect ratio */
342			inpaspect *= aspectval(s);
343	greg	2.15	else if (isexpos(s)) /* get exposure */
344	greg	2.8	hotlvl *= exposval(s);
345	greg	2.15	else if (formatval(fmt, s)) { /* get format */
346			wrongformat = 0;
347			if (!strcmp(COLRFMT, fmt))
348			ourbright = rgb_bright;
349			else if (!strcmp(CIEFMT, fmt))
350			ourbright = xyz_bright;
351			else
352			wrongformat = !globmatch(PICFMT, fmt);
353	greg	2.17	} else if (isview(s) && sscanview(&ourview, s) > 0)
354			gotview++;
355	gwlarson	2.20	return(0);
356	greg	1.9	}
357
358
359	greg	1.1	copyfile(in, out) /* copy a file */
360			register FILE in, out;
361			{
362			register int c;
363
364			while ((c = getc(in)) != EOF)
365			putc(c, out);
366
367			if (ferror(out)) {
368			fprintf(stderr, "%s: write error in copyfile\n", progname);
369			quit(1);
370			}
371			}
372
373
374			pass1(in) /* first pass of picture file */
375			FILE *in;
376			{
377			int i;
378			COLOR *scan;
379
380			pass1init();
381
382			scan = (COLOR )malloc(xressizeof(COLOR));
383			if (scan == NULL) {
384			fprintf(stderr, "%s: out of memory\n", progname);
385			quit(1);
386			}
387			for (i = 0; i < yres; i++) {
388			if (freadscan(scan, xres, in) < 0) {
389	greg	2.7	nrows = (long)nrows * i / yres; /* adjust frame */
390	greg	1.1	if (nrows <= 0) {
391			fprintf(stderr, "%s: empty frame\n", progname);
392			quit(1);
393			}
394			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
395	greg	2.7	progname, (int)(100L*i/yres));
396	greg	1.1	yres = i;
397	greg	1.11	y_r = (double)nrows/yres;
398	greg	2.18	estatus++;
399	greg	1.1	break;
400			}
401			pass1scan(scan, i);
402			}
403	greg	2.21	free((void *)scan);
404	greg	1.1	}
405
406
407			pass2(in) /* last pass on file, write to stdout */
408			FILE *in;
409			{
410			int yread;
411			int ycent, xcent;
412			int r, c;
413	greg	2.4
414	greg	1.1	pass2init();
415			scan2init();
416			yread = 0;
417			for (r = 0; r < nrows; r++) {
418	greg	2.19	ycent = (r+.5)*yres/nrows;
419	greg	1.1	while (yread <= ycent+yrad) {
420			if (yread < yres) {
421			if (freadscan(scanin[yread%barsize],
422			xres, in) < 0) {
423			fprintf(stderr,
424	greg	2.14	"%s: truncated input (y=%d)\n",
425	greg	1.1	progname, yres-1-yread);
426			quit(1);
427			}
428			pass2scan(scanin[yread%barsize], yread);
429			}
430			yread++;
431			}
432	greg	2.9	if (obarsize > 0)
433			scan2sync(r);
434	greg	1.1	for (c = 0; c < ncols; c++) {
435	greg	2.19	xcent = (c+.5)*xres/ncols;
436	greg	2.9	if (thresh > FTINY)
437			dothresh(xcent, ycent, c, r);
438			else if (rad > FTINY)
439			dogauss(scanout[c], xcent, ycent, c, r);
440			else
441	greg	1.1	dobox(scanout[c], xcent, ycent, c, r);
442			}
443	greg	2.9	if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) {
444	greg	1.1	fprintf(stderr, "%s: write error in pass2\n", progname);
445			quit(1);
446			}
447			}
448	greg	2.9	/* skip leftover input */
449	greg	1.10	while (yread < yres) {
450			if (freadscan(scanin[0], xres, in) < 0)
451			break;
452			yread++;
453			}
454	greg	2.9	scan2flush(); /* flush output */
455	greg	1.1	}
456
457
458			scan2init() /* prepare scanline arrays */
459			{
460	greg	1.15	COLOR ctmp;
461	greg	2.4	double d;
462	greg	1.1	register int i;
463
464	greg	2.9	xbrad = xres/ncols/2 + 1;
465			ybrad = yres/nrows/2 + 1;
466			if (rad > FTINY) {
467	greg	1.1	if (nrows >= yres && ncols >= xres)
468			rad *= (y_r + x_c)/2.0;
469
470	greg	2.9	if (thresh > FTINY) {
471			orad = CHECKRADTHRESHRADrad + 1;
472	greg	2.16	xrad = orad/x_c + xbrad;
473			yrad = orad/y_r + ybrad;
474	greg	2.9	obarsize = 2*orad + 1;
475			} else {
476			xrad = CHECKRAD*rad/x_c + 1;
477			yrad = CHECKRAD*rad/y_r + 1;
478			}
479	greg	1.1	initmask(); /* initialize filter table */
480	greg	2.9	} else {
481			xrad = xbrad;
482			yrad = ybrad;
483	greg	1.1	}
484	greg	1.17	barsize = 2*yrad + 1;
485	greg	1.1	scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
486	greg	2.10	if (scanin == NULL)
487			goto memerr;
488	greg	1.1	for (i = 0; i < barsize; i++) {
489			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
490	greg	2.10	if (scanin[i] == NULL)
491			goto memerr;
492	greg	1.1	}
493	greg	2.9	if (obarsize > 0) {
494			scoutbar = (COLOR *)malloc(obarsizesizeof(COLOR *));
495			greybar = (float *)malloc(obarsizesizeof(float *));
496	schorsch	2.26	if ((scoutbar == NULL) \| (greybar == NULL))
497	greg	2.10	goto memerr;
498	greg	2.9	for (i = 0; i < obarsize; i++) {
499			scoutbar[i] = (COLOR )malloc(ncolssizeof(COLOR));
500			greybar[i] = (float )malloc(ncolssizeof(float));
501	schorsch	2.26	if ((scoutbar[i] == NULL) \| (greybar[i] == NULL))
502	greg	2.10	goto memerr;
503	greg	2.9	}
504			} else {
505			scanout = (COLOR )malloc(ncolssizeof(COLOR));
506	greg	2.10	if (scanout == NULL)
507			goto memerr;
508	greg	1.1	}
509	greg	1.15	/* record pixel aspect ratio */
510	greg	1.12	if (!correctaspect) {
511	greg	1.19	d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
512	greg	1.15	if (!FEQ(d,1.0))
513	greg	1.12	fputaspect(d, stdout);
514			}
515	greg	1.15	/* record exposure */
516	greg	2.15	d = (*ourbright)(exposure);
517	greg	1.15	if (!FEQ(d,1.0))
518	greg	1.9	fputexpos(d, stdout);
519	greg	1.15	/* record color correction */
520			copycolor(ctmp, exposure);
521			scalecolor(ctmp, 1.0/d);
522			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
523			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
524			fputcolcor(ctmp, stdout);
525	greg	1.1	printf("\n");
526	greg	1.15	/* write out resolution */
527	greg	1.19	fputresolu(order, ncols, nrows, stdout);
528	greg	2.10	return;
529			memerr:
530			fprintf(stderr, "%s: out of memory\n", progname);
531			quit(1);
532	greg	2.9	}
533
534
535			scan2sync(r) /* synchronize grey averages and output scan */
536			int r;
537			{
538			static int nextrow = 0;
539			COLOR ctmp;
540			int ybot;
541			register int c;
542			/* average input scanlines */
543	greg	2.16	while (nextrow <= r+orad && nextrow < nrows) {
544	greg	2.19	ybot = (nextrow+.5)*yres/nrows;
545	greg	2.9	for (c = 0; c < ncols; c++) {
546	greg	2.19	dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow);
547	greg	2.15	greybar[nextrow%obarsize][c] = (*ourbright)(ctmp);
548	greg	2.9	}
549			/* and zero output scanline */
550	schorsch	2.25	memset((char )scoutbar[nextrow%obarsize], '\0', ncolssizeof(COLOR));
551	greg	2.9	nextrow++;
552			}
553			/* point to top scanline for output */
554			if (r-orad >= 0)
555			scanout = scoutbar[(r-orad)%obarsize];
556			else
557			scanout = NULL;
558			}
559
560
561			scan2flush() /* flush output buffer */
562			{
563			register int r;
564
565			for (r = nrows-orad; r < nrows; r++)
566			if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0)
567			break;
568			if (fflush(stdout) < 0) {
569			fprintf(stderr, "%s: write error at end of pass2\n", progname);
570	greg	2.18	quit(1);
571	greg	2.9	}
572	greg	1.1	}
573
574
575	greg	2.21	void
576	greg	1.1	quit(code) /* remove temporary file and exit */
577			int code;
578			{
579			if (tfname != NULL)
580			unlink(tfname);
581			exit(code);
582			}