src/px/pfilt.c

#ifndef lint
static const char RCSid[] = "$Id: pfilt.c,v 2.25 2003/06/30 14:59:12 schorsch Exp $";
#endif
/*
 *  pfilt.c - program to post-process picture file.
 *
 *     9/26/85
 *     6/23/93  Added additional buffers for value spreading
 */

#include  "copyright.h"

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

#include  "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 */
                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:	2.26
Committed:	Sun Jul 27 22:12:03 2003 UTC (20 years, 8 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.25:	+3 -3 lines
Log Message:	Added grouping parens to reduce ambiguity warnings.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.26	static const char RCSid[] = "$Id: pfilt.c,v 2.25 2003/06/30 14:59:12 schorsch Exp $";
3	greg	1.1	#endif
4			/*
5			* pfilt.c - program to post-process picture file.
6			*
7			* 9/26/85
8	greg	2.9	* 6/23/93 Added additional buffers for value spreading
9	greg	1.1	*/
10
11	schorsch	2.25	#include "copyright.h"
12
13	greg	1.1	#include <signal.h>
14	schorsch	2.25	#include <string.h>
15	greg	1.1
16	schorsch	2.23	#include "standard.h"
17	schorsch	2.24	#include "platform.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
87			main(argc, argv)
88			int argc;
89			char **argv;
90			{
91	greg	2.21	extern int headline();
92	greg	1.1	FILE *fin;
93	greg	1.13	float *lampcolor;
94			char *lamptype = NULL;
95	greg	1.1	long fpos;
96	greg	2.4	double outaspect = 0.0;
97			double d;
98	greg	2.13	int i, j;
99	schorsch	2.23	SET_DEFAULT_BINARY();
100			SET_FILE_BINARY(stdin);
101			SET_FILE_BINARY(stdout);
102	greg	1.1	if (signal(SIGINT, quit) == SIG_IGN)
103			signal(SIGINT, SIG_IGN);
104	schorsch	2.24	#ifdef SIGHUP
105	greg	1.1	if (signal(SIGHUP, quit) == SIG_IGN)
106	greg	2.11	signal(SIGHUP, SIG_IGN);
107	schorsch	2.24	#endif
108	greg	1.1	signal(SIGTERM, quit);
109	schorsch	2.24	#ifdef SIGPIPE
110	greg	1.1	signal(SIGPIPE, quit);
111	schorsch	2.24	#endif
112	greg	2.4	#ifdef SIGXCPU
113	greg	1.1	signal(SIGXCPU, quit);
114			signal(SIGXFSZ, quit);
115			#endif
116
117	greg	2.6	progname = argv[0] = fixargv0(argv[0]);
118	greg	1.1
119			for (i = 1; i < argc; i++)
120			if (argv[i][0] == '-')
121			switch (argv[i][1]) {
122			case 'x':
123	greg	1.3	i++;
124	greg	1.5	if (argv[i][0] == '/') {
125	greg	1.4	x_c = 1.0/atof(argv[i]+1);
126	greg	1.5	ncols = 0;
127			} else
128	greg	1.3	ncols = atoi(argv[i]);
129	greg	1.1	break;
130			case 'y':
131	greg	1.3	i++;
132	greg	1.5	if (argv[i][0] == '/') {
133	greg	1.4	y_r = 1.0/atof(argv[i]+1);
134	greg	1.5	nrows = 0;
135			} else
136	greg	1.3	nrows = atoi(argv[i]);
137	greg	1.1	break;
138	greg	1.12	case 'c':
139			correctaspect = !correctaspect;
140			break;
141	greg	1.9	case 'p':
142			i++;
143			outaspect = atof(argv[i]);
144			break;
145	greg	1.1	case 'e':
146			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
147			d = pow(2.0, atof(argv[i+1]));
148			else
149			d = atof(argv[i+1]);
150	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
151			fprintf(stderr,
152			"%s: exposure out of range\n",
153			argv[0]);
154	greg	2.18	quit(1);
155	greg	1.15	}
156	greg	1.1	switch (argv[i][2]) {
157			case '\0':
158			scalecolor(exposure, d);
159			break;
160			case 'r':
161			colval(exposure,RED) *= d;
162			break;
163			case 'g':
164			colval(exposure,GRN) *= d;
165			break;
166			case 'b':
167			colval(exposure,BLU) *= d;
168			break;
169			default:
170			goto badopt;
171			}
172			i++;
173			break;
174	greg	1.13	case 'f':
175			lampdat = argv[++i];
176			break;
177			case 't':
178			lamptype = argv[++i];
179			break;
180	greg	1.1	case '1':
181			singlepass = 1;
182			break;
183	greg	1.6	case '2':
184			singlepass = 0;
185			break;
186	greg	1.9	case 'n':
187	greg	1.1	npts = atoi(argv[++i]) / 2;
188			break;
189			case 's':
190			spread = atof(argv[++i]);
191			break;
192			case 'a':
193			avghot = !avghot;
194			break;
195			case 'h':
196			hotlvl = atof(argv[++i]);
197			break;
198			case 'r':
199			rad = atof(argv[++i]);
200			break;
201	greg	2.9	case 'm':
202			thresh = atof(argv[++i]);
203			if (rad <= FTINY)
204	greg	2.21	rad = 0.6;
205	greg	2.9	break;
206	greg	1.1	case 'b':
207	greg	2.9	rad = thresh = 0.0;
208	greg	1.1	break;
209			default:;
210			badopt:
211			fprintf(stderr, "%s: unknown option: %s\n",
212			progname, argv[i]);
213			quit(1);
214			break;
215			}
216			else
217			break;
218	greg	1.14	/* get lamp data (if necessary) */
219			if (lamptype != NULL) {
220			if (loadlamps(lampdat) < 0)
221			quit(1);
222			if ((lampcolor = matchlamp(lamptype)) == NULL) {
223			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
224			quit(1);
225			}
226	greg	2.13	for (j = 0; j < 3; j++)
227			if (lampcolor[j] > 1e-4)
228			colval(exposure,j) /= lampcolor[j];
229	greg	1.14	freelamps();
230			}
231			/* open input file */
232	greg	1.1	if (i == argc) {
233			if (singlepass)
234			fin = stdin;
235			else {
236	greg	2.11	tfname = mktemp(template);
237	greg	1.1	if ((fin = fopen(tfname, "w+")) == NULL) {
238			fprintf(stderr, "%s: can't create ", progname);
239			fprintf(stderr, "temp file \"%s\"\n", tfname);
240			quit(1);
241			}
242			copyfile(stdin, fin);
243			if (fseek(fin, 0L, 0) == -1) {
244			fprintf(stderr, "%s: seek fail\n", progname);
245			quit(1);
246			}
247			}
248			} else if (i == argc-1) {
249			if ((fin = fopen(argv[i], "r")) == NULL) {
250			fprintf(stderr, "%s: can't open file \"%s\"\n",
251			progname, argv[i]);
252			quit(1);
253			}
254			} else {
255			fprintf(stderr, "%s: bad # file arguments\n", progname);
256			quit(1);
257			}
258	greg	1.9	/* get header */
259	greg	1.16	getheader(fin, headline, NULL);
260			if (wrongformat) {
261			fprintf(stderr, "%s: input must be a Radiance picture\n",
262			progname);
263			quit(1);
264			}
265	greg	1.1	/* add new header info. */
266			printargs(i, argv, stdout);
267			/* get picture size */
268	greg	1.19	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
269	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
270			quit(1);
271			}
272	greg	1.19	if (!(order & YMAJOR))
273			inpaspect = 1.0/inpaspect;
274	greg	2.17	/* wrap around for cylindrical view? */
275			wrapfilt = gotview && ourview.type == VT_CYL &&
276			ourview.horiz >= 360.-FTINY && order & YMAJOR;
277	greg	1.9	/* compute output resolution */
278			if (ncols <= 0)
279	greg	1.4	ncols = x_c*xres + .5;
280	greg	1.9	if (nrows <= 0)
281	greg	1.4	nrows = y_r*yres + .5;
282	greg	1.9	if (outaspect > .01) {
283			d = inpaspect * yres/xres / outaspect;
284			if (d * ncols > nrows)
285			ncols = nrows / d;
286			else
287			nrows = ncols * d;
288			}
289			x_c = (double)ncols/xres;
290			y_r = (double)nrows/yres;
291	greg	1.1
292	greg	1.9	if (singlepass) { /* skip exposure, etc. */
293	greg	1.1	pass1default();
294			pass2(fin);
295			quit(0);
296			}
297
298			fpos = ftell(fin); /* save input file position */
299
300			pass1(fin);
301
302			if (fseek(fin, fpos, 0) == -1) {
303			fprintf(stderr, "%s: seek fail\n", progname);
304			quit(1);
305			}
306			pass2(fin);
307
308	greg	2.18	quit(estatus);
309	greg	1.1	}
310
311
312	greg	2.15	double
313			rgb_bright(clr)
314			COLOR clr;
315			{
316			return(bright(clr));
317			}
318
319
320			double
321			xyz_bright(clr)
322			COLOR clr;
323			{
324			return(clr[CIEY]);
325			}
326
327
328			double (*ourbright)() = rgb_bright;
329
330
331	gwlarson	2.20	int
332	greg	1.9	headline(s) /* process line from header */
333			char *s;
334			{
335	greg	1.16	char fmt[32];
336
337	greg	1.9	fputs(s, stdout); /* copy to output */
338			if (isaspect(s)) /* get aspect ratio */
339			inpaspect *= aspectval(s);
340	greg	2.15	else if (isexpos(s)) /* get exposure */
341	greg	2.8	hotlvl *= exposval(s);
342	greg	2.15	else if (formatval(fmt, s)) { /* get format */
343			wrongformat = 0;
344			if (!strcmp(COLRFMT, fmt))
345			ourbright = rgb_bright;
346			else if (!strcmp(CIEFMT, fmt))
347			ourbright = xyz_bright;
348			else
349			wrongformat = !globmatch(PICFMT, fmt);
350	greg	2.17	} else if (isview(s) && sscanview(&ourview, s) > 0)
351			gotview++;
352	gwlarson	2.20	return(0);
353	greg	1.9	}
354
355
356	greg	1.1	copyfile(in, out) /* copy a file */
357			register FILE in, out;
358			{
359			register int c;
360
361			while ((c = getc(in)) != EOF)
362			putc(c, out);
363
364			if (ferror(out)) {
365			fprintf(stderr, "%s: write error in copyfile\n", progname);
366			quit(1);
367			}
368			}
369
370
371			pass1(in) /* first pass of picture file */
372			FILE *in;
373			{
374			int i;
375			COLOR *scan;
376
377			pass1init();
378
379			scan = (COLOR )malloc(xressizeof(COLOR));
380			if (scan == NULL) {
381			fprintf(stderr, "%s: out of memory\n", progname);
382			quit(1);
383			}
384			for (i = 0; i < yres; i++) {
385			if (freadscan(scan, xres, in) < 0) {
386	greg	2.7	nrows = (long)nrows * i / yres; /* adjust frame */
387	greg	1.1	if (nrows <= 0) {
388			fprintf(stderr, "%s: empty frame\n", progname);
389			quit(1);
390			}
391			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
392	greg	2.7	progname, (int)(100L*i/yres));
393	greg	1.1	yres = i;
394	greg	1.11	y_r = (double)nrows/yres;
395	greg	2.18	estatus++;
396	greg	1.1	break;
397			}
398			pass1scan(scan, i);
399			}
400	greg	2.21	free((void *)scan);
401	greg	1.1	}
402
403
404			pass2(in) /* last pass on file, write to stdout */
405			FILE *in;
406			{
407			int yread;
408			int ycent, xcent;
409			int r, c;
410	greg	2.4
411	greg	1.1	pass2init();
412			scan2init();
413			yread = 0;
414			for (r = 0; r < nrows; r++) {
415	greg	2.19	ycent = (r+.5)*yres/nrows;
416	greg	1.1	while (yread <= ycent+yrad) {
417			if (yread < yres) {
418			if (freadscan(scanin[yread%barsize],
419			xres, in) < 0) {
420			fprintf(stderr,
421	greg	2.14	"%s: truncated input (y=%d)\n",
422	greg	1.1	progname, yres-1-yread);
423			quit(1);
424			}
425			pass2scan(scanin[yread%barsize], yread);
426			}
427			yread++;
428			}
429	greg	2.9	if (obarsize > 0)
430			scan2sync(r);
431	greg	1.1	for (c = 0; c < ncols; c++) {
432	greg	2.19	xcent = (c+.5)*xres/ncols;
433	greg	2.9	if (thresh > FTINY)
434			dothresh(xcent, ycent, c, r);
435			else if (rad > FTINY)
436			dogauss(scanout[c], xcent, ycent, c, r);
437			else
438	greg	1.1	dobox(scanout[c], xcent, ycent, c, r);
439			}
440	greg	2.9	if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) {
441	greg	1.1	fprintf(stderr, "%s: write error in pass2\n", progname);
442			quit(1);
443			}
444			}
445	greg	2.9	/* skip leftover input */
446	greg	1.10	while (yread < yres) {
447			if (freadscan(scanin[0], xres, in) < 0)
448			break;
449			yread++;
450			}
451	greg	2.9	scan2flush(); /* flush output */
452	greg	1.1	}
453
454
455			scan2init() /* prepare scanline arrays */
456			{
457	greg	1.15	COLOR ctmp;
458	greg	2.4	double d;
459	greg	1.1	register int i;
460
461	greg	2.9	xbrad = xres/ncols/2 + 1;
462			ybrad = yres/nrows/2 + 1;
463			if (rad > FTINY) {
464	greg	1.1	if (nrows >= yres && ncols >= xres)
465			rad *= (y_r + x_c)/2.0;
466
467	greg	2.9	if (thresh > FTINY) {
468			orad = CHECKRADTHRESHRADrad + 1;
469	greg	2.16	xrad = orad/x_c + xbrad;
470			yrad = orad/y_r + ybrad;
471	greg	2.9	obarsize = 2*orad + 1;
472			} else {
473			xrad = CHECKRAD*rad/x_c + 1;
474			yrad = CHECKRAD*rad/y_r + 1;
475			}
476	greg	1.1	initmask(); /* initialize filter table */
477	greg	2.9	} else {
478			xrad = xbrad;
479			yrad = ybrad;
480	greg	1.1	}
481	greg	1.17	barsize = 2*yrad + 1;
482	greg	1.1	scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
483	greg	2.10	if (scanin == NULL)
484			goto memerr;
485	greg	1.1	for (i = 0; i < barsize; i++) {
486			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
487	greg	2.10	if (scanin[i] == NULL)
488			goto memerr;
489	greg	1.1	}
490	greg	2.9	if (obarsize > 0) {
491			scoutbar = (COLOR *)malloc(obarsizesizeof(COLOR *));
492			greybar = (float *)malloc(obarsizesizeof(float *));
493	schorsch	2.26	if ((scoutbar == NULL) \| (greybar == NULL))
494	greg	2.10	goto memerr;
495	greg	2.9	for (i = 0; i < obarsize; i++) {
496			scoutbar[i] = (COLOR )malloc(ncolssizeof(COLOR));
497			greybar[i] = (float )malloc(ncolssizeof(float));
498	schorsch	2.26	if ((scoutbar[i] == NULL) \| (greybar[i] == NULL))
499	greg	2.10	goto memerr;
500	greg	2.9	}
501			} else {
502			scanout = (COLOR )malloc(ncolssizeof(COLOR));
503	greg	2.10	if (scanout == NULL)
504			goto memerr;
505	greg	1.1	}
506	greg	1.15	/* record pixel aspect ratio */
507	greg	1.12	if (!correctaspect) {
508	greg	1.19	d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
509	greg	1.15	if (!FEQ(d,1.0))
510	greg	1.12	fputaspect(d, stdout);
511			}
512	greg	1.15	/* record exposure */
513	greg	2.15	d = (*ourbright)(exposure);
514	greg	1.15	if (!FEQ(d,1.0))
515	greg	1.9	fputexpos(d, stdout);
516	greg	1.15	/* record color correction */
517			copycolor(ctmp, exposure);
518			scalecolor(ctmp, 1.0/d);
519			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
520			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
521			fputcolcor(ctmp, stdout);
522	greg	1.1	printf("\n");
523	greg	1.15	/* write out resolution */
524	greg	1.19	fputresolu(order, ncols, nrows, stdout);
525	greg	2.10	return;
526			memerr:
527			fprintf(stderr, "%s: out of memory\n", progname);
528			quit(1);
529	greg	2.9	}
530
531
532			scan2sync(r) /* synchronize grey averages and output scan */
533			int r;
534			{
535			static int nextrow = 0;
536			COLOR ctmp;
537			int ybot;
538			register int c;
539			/* average input scanlines */
540	greg	2.16	while (nextrow <= r+orad && nextrow < nrows) {
541	greg	2.19	ybot = (nextrow+.5)*yres/nrows;
542	greg	2.9	for (c = 0; c < ncols; c++) {
543	greg	2.19	dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow);
544	greg	2.15	greybar[nextrow%obarsize][c] = (*ourbright)(ctmp);
545	greg	2.9	}
546			/* and zero output scanline */
547	schorsch	2.25	memset((char )scoutbar[nextrow%obarsize], '\0', ncolssizeof(COLOR));
548	greg	2.9	nextrow++;
549			}
550			/* point to top scanline for output */
551			if (r-orad >= 0)
552			scanout = scoutbar[(r-orad)%obarsize];
553			else
554			scanout = NULL;
555			}
556
557
558			scan2flush() /* flush output buffer */
559			{
560			register int r;
561
562			for (r = nrows-orad; r < nrows; r++)
563			if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0)
564			break;
565			if (fflush(stdout) < 0) {
566			fprintf(stderr, "%s: write error at end of pass2\n", progname);
567	greg	2.18	quit(1);
568	greg	2.9	}
569	greg	1.1	}
570
571
572	greg	2.21	void
573	greg	1.1	quit(code) /* remove temporary file and exit */
574			int code;
575			{
576			if (tfname != NULL)
577			unlink(tfname);
578			exit(code);
579			}