src/px/ra_skel.c

/* Copyright (c) 1992 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  Skeletal 24-bit image conversion program.  Replace "skel"
 *  in this file with a more appropriate image type identifier.
 *
 *  The Makefile entry should look something like this:
 *      ra_skel:        ra_skel.o
 *              cc $(CFLAGS) -o ra_skel ra_skel.o -lrt -lm
 *      ra_skel.o:      ../common/color.h ../common/resolu.h
 *
 *  If you like to do things the hard way, you can link directly
 *  to the object files "color.o colrops.o resolu.o header.o" in
 *  the common subdirectory instead of using the -lrt library.
 */

#include  <stdio.h>
#include  <math.h>
#ifdef MSDOS
#include  <fcntl.h>
#endif
#include  "color.h"
#include  "resolu.h"

extern char  *malloc();

double  gamcor = 2.2;                   /* gamma correction */

int  bradj = 0;                         /* brightness adjustment */

char  *progname;

int  xmax, ymax;


main(argc, argv)
int  argc;
char  *argv[];
{
        int  reverse = 0;
        int  i;
        
        progname = argv[0];

        for (i = 1; i < argc; i++)
                if (argv[i][0] == '-')
                        switch (argv[i][1]) {
                        case 'g':               /* gamma correction */
                                gamcor = atof(argv[++i]);
                                break;
                        case 'e':               /* exposure adjustment */
                                if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
                                        goto userr;
                                bradj = atoi(argv[++i]);
                                break;
                        case 'r':               /* reverse conversion */
                                reverse = 1;
                                break;
                        default:
                                goto userr;
                        }
                else
                        break;

        if (i < argc-2)
                goto userr;
        if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
                fprintf(stderr, "%s: can't open input \"%s\"\n",
                                progname, argv[i]);
                exit(1);
        }
        if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
                fprintf(stderr, "%s: can't open output \"%s\"\n",
                                progname, argv[i+1]);
                exit(1);
        }
#ifdef MSDOS
        setmode(fileno(stdin), O_BINARY);
        setmode(fileno(stdout), O_BINARY);
#endif
        setcolrgam(gamcor);             /* set up gamma correction */
        if (reverse) {
                                        /* get their image resolution */
                read_skel_head(&xmax, &ymax);
                                        /* put our header */
                printargs(i, argv, stdout);
                fputformat(COLRFMT, stdout);
                putchar('\n');
                fprtresolu(xmax, ymax, stdout);
                                        /* convert file */
                skel2ra();
        } else {
                                        /* get our header */
                if (checkheader(stdin, COLRFMT, NULL) < 0 ||
                                fgetresolu(&xmax, &ymax, stdin) < 0)
                        quiterr("bad picture format");
                                        /* write their header */
                write_skel_head(xmax, ymax);
                                        /* convert file */
                ra2skel();
        }
        exit(0);
userr:
        fprintf(stderr,
                "Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n",
                        progname);
        exit(1);
}


quiterr(err)            /* print message and exit */
char  *err;
{
        if (err != NULL) {
                fprintf(stderr, "%s: %s\n", progname, err);
                exit(1);
        }
        exit(0);
}


skel2ra()               /* convert 24-bit scanlines to Radiance picture */
{
        COLR    *scanout;
        register int    x;
        int     y;
                                                /* allocate scanline */
        scanout = (COLR *)malloc(xmax*sizeof(COLR));
        if (scanout == NULL)
                quiterr("out of memory in skel2ra");
                                                /* convert image */
        for (y = ymax-1; y >= 0; y--) {
                for (x = 0; x < xmax; x++) {
                        scanout[x][RED] = getc(stdin);
                        scanout[x][GRN] = getc(stdin);
                        scanout[x][BLU] = getc(stdin);
                }
                if (feof(stdin) | ferror(stdin))
                        quiterr("error reading skel image");
                                                /* undo gamma */
                gambs_colrs(scanout, xmax);
                if (bradj)                      /* adjust exposure */
                        shiftcolrs(scanout, xmax, bradj);
                if (fwritecolrs(scanout, xmax, stdout) < 0)
                        quiterr("error writing Radiance picture");
        }
                                                /* free scanline */
        free((char *)scanout);
}


ra2skel()               /* convert Radiance scanlines to 24-bit */
{
        COLR    *scanin;
        register int    x;
        int     y;
                                                /* allocate scanline */
        scanin = (COLR *)malloc(xmax*sizeof(COLR));
        if (scanin == NULL)
                quiterr("out of memory in ra2skel");
                                                /* convert image */
        for (y = ymax-1; y >= 0; y--) {
                if (freadcolrs(scanin, xmax, stdin) < 0)
                        quiterr("error reading Radiance picture");
                if (bradj)                      /* adjust exposure */
                        shiftcolrs(scanin, xmax, bradj);
                colrs_gambs(scanin, xmax);      /* gamma correction */
                for (x = 0; x < xmax; x++) {
                        putc(scanin[x][RED], stdout);
                        putc(scanin[x][GRN], stdout);
                        putc(scanin[x][BLU], stdout);
                }
                if (ferror(stdout))
                        quiterr("error writing skel file");
        }
                                                /* free scanline */
        free((char *)scanin);
}
Revision:	2.8
Committed:	Thu Nov 18 09:55:24 1993 UTC (30 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.7:	+1 -1 lines
Log Message:	minor compiler warning fixes
#	User	Rev	Content
1	greg	2.3	/* Copyright (c) 1992 Regents of the University of California */
2
3	greg	2.1	#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7	greg	2.4	/*
8			* Skeletal 24-bit image conversion program. Replace "skel"
9	greg	2.1	* in this file with a more appropriate image type identifier.
10			*
11			* The Makefile entry should look something like this:
12			* ra_skel: ra_skel.o
13			* cc $(CFLAGS) -o ra_skel ra_skel.o -lrt -lm
14			* ra_skel.o: ../common/color.h ../common/resolu.h
15			*
16			* If you like to do things the hard way, you can link directly
17			* to the object files "color.o colrops.o resolu.o header.o" in
18			* the common subdirectory instead of using the -lrt library.
19			*/
20
21			#include <stdio.h>
22	greg	2.5	#include <math.h>
23	greg	2.3	#ifdef MSDOS
24			#include <fcntl.h>
25			#endif
26	greg	2.1	#include "color.h"
27			#include "resolu.h"
28
29	greg	2.3	extern char *malloc();
30	greg	2.1
31	greg	2.6	double gamcor = 2.2; /* gamma correction */
32	greg	2.1
33			int bradj = 0; /* brightness adjustment */
34
35			char *progname;
36
37			int xmax, ymax;
38
39
40			main(argc, argv)
41			int argc;
42			char *argv[];
43			{
44			int reverse = 0;
45			int i;
46
47			progname = argv[0];
48
49			for (i = 1; i < argc; i++)
50			if (argv[i][0] == '-')
51			switch (argv[i][1]) {
52			case 'g': /* gamma correction */
53	greg	2.6	gamcor = atof(argv[++i]);
54	greg	2.1	break;
55			case 'e': /* exposure adjustment */
56			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
57			goto userr;
58			bradj = atoi(argv[++i]);
59			break;
60			case 'r': /* reverse conversion */
61			reverse = 1;
62			break;
63			default:
64			goto userr;
65			}
66			else
67			break;
68
69			if (i < argc-2)
70			goto userr;
71			if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
72			fprintf(stderr, "%s: can't open input \"%s\"\n",
73			progname, argv[i]);
74			exit(1);
75			}
76			if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
77	greg	2.8	fprintf(stderr, "%s: can't open output \"%s\"\n",
78	greg	2.1	progname, argv[i+1]);
79			exit(1);
80			}
81	greg	2.3	#ifdef MSDOS
82			setmode(fileno(stdin), O_BINARY);
83			setmode(fileno(stdout), O_BINARY);
84			#endif
85	greg	2.6	setcolrgam(gamcor); /* set up gamma correction */
86	greg	2.1	if (reverse) {
87			/* get their image resolution */
88			read_skel_head(&xmax, &ymax);
89			/* put our header */
90			printargs(i, argv, stdout);
91			fputformat(COLRFMT, stdout);
92			putchar('\n');
93			fprtresolu(xmax, ymax, stdout);
94			/* convert file */
95			skel2ra();
96			} else {
97			/* get our header */
98			if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
99			fgetresolu(&xmax, &ymax, stdin) < 0)
100			quiterr("bad picture format");
101			/* write their header */
102			write_skel_head(xmax, ymax);
103			/* convert file */
104			ra2skel();
105			}
106			exit(0);
107			userr:
108			fprintf(stderr,
109			"Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n",
110			progname);
111			exit(1);
112			}
113
114
115			quiterr(err) /* print message and exit */
116			char *err;
117			{
118			if (err != NULL) {
119			fprintf(stderr, "%s: %s\n", progname, err);
120			exit(1);
121			}
122			exit(0);
123			}
124
125
126			skel2ra() /* convert 24-bit scanlines to Radiance picture */
127			{
128			COLR *scanout;
129			register int x;
130			int y;
131			/* allocate scanline */
132			scanout = (COLR )malloc(xmaxsizeof(COLR));
133			if (scanout == NULL)
134			quiterr("out of memory in skel2ra");
135			/* convert image */
136			for (y = ymax-1; y >= 0; y--) {
137	greg	2.7	for (x = 0; x < xmax; x++) {
138			scanout[x][RED] = getc(stdin);
139			scanout[x][GRN] = getc(stdin);
140			scanout[x][BLU] = getc(stdin);
141			}
142			if (feof(stdin) \| ferror(stdin))
143	greg	2.1	quiterr("error reading skel image");
144			/* undo gamma */
145			gambs_colrs(scanout, xmax);
146			if (bradj) /* adjust exposure */
147			shiftcolrs(scanout, xmax, bradj);
148			if (fwritecolrs(scanout, xmax, stdout) < 0)
149			quiterr("error writing Radiance picture");
150			}
151			/* free scanline */
152			free((char *)scanout);
153			}
154
155
156			ra2skel() /* convert Radiance scanlines to 24-bit */
157			{
158			COLR *scanin;
159			register int x;
160			int y;
161			/* allocate scanline */
162			scanin = (COLR )malloc(xmaxsizeof(COLR));
163			if (scanin == NULL)
164			quiterr("out of memory in ra2skel");
165			/* convert image */
166			for (y = ymax-1; y >= 0; y--) {
167			if (freadcolrs(scanin, xmax, stdin) < 0)
168			quiterr("error reading Radiance picture");
169			if (bradj) /* adjust exposure */
170			shiftcolrs(scanin, xmax, bradj);
171			colrs_gambs(scanin, xmax); /* gamma correction */
172			for (x = 0; x < xmax; x++) {
173			putc(scanin[x][RED], stdout);
174			putc(scanin[x][GRN], stdout);
175			putc(scanin[x][BLU], stdout);
176			}
177			if (ferror(stdout))
178			quiterr("error writing skel file");
179			}
180			/* free scanline */
181			free((char *)scanin);
182			}