src/px/ra_pr24.c

/* Copyright (c) 1991 Regents of the University of California */

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

/*
 *  program to convert between RADIANCE and 24-bit rasterfiles.
 */

#include  <stdio.h>

#include  "rasterfile.h"

#include  "color.h"

extern double  atof(), pow();

double  gamma = 2.0;                    /* gamma correction */

int  bradj = 0;                         /* brightness adjustment */

char  *progname;

int  xmax, ymax;


main(argc, argv)
int  argc;
char  *argv[];
{
        struct rasterfile  head;
        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 = atof(argv[++i]);
                                break;
                        case 'e':
                                if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
                                        goto userr;
                                bradj = atoi(argv[++i]);
                                break;
                        case 'r':
                                reverse = !reverse;
                                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, "can't open output \"%s\"\n",
                                progname, argv[i+1]);
                exit(1);
        }
        setcolrgam(gamma);
        if (reverse) {
                                        /* get header */
                if (fread((char *)&head, sizeof(head), 1, stdin) != 1)
                        quiterr("missing header");
                if (head.ras_magic != RAS_MAGIC)
                        quiterr("bad raster format");
                xmax = head.ras_width;
                ymax = head.ras_height;
                if ((head.ras_type != RT_STANDARD
                                        && head.ras_type != RT_FORMAT_RGB)
                                || head.ras_maptype != RMT_NONE
                                || head.ras_depth != 24)
                        quiterr("incompatible format");
                                        /* put header */
                printargs(i, argv, stdout);
                fputformat(COLRFMT, stdout);
                putchar('\n');
                fputresolu(YMAJOR|YDECR, xmax, ymax, stdout);
                                        /* convert file */
                pr2ra(head.ras_type);
        } else {
                                        /* get header info. */
                if (checkheader(stdin, COLRFMT, NULL) < 0 ||
                        fgetresolu(&xmax, &ymax, stdin) != (YMAJOR|YDECR))
                        quiterr("bad picture format");
                                        /* write rasterfile header */
                head.ras_magic = RAS_MAGIC;
                head.ras_width = xmax;
                head.ras_height = ymax;
                head.ras_depth = 24;
                head.ras_length = xmax*ymax*3;
                head.ras_type = RT_STANDARD;
                head.ras_maptype = RMT_NONE;
                head.ras_maplength = 0;
                fwrite((char *)&head, sizeof(head), 1, stdout);
                                        /* convert file */
                ra2pr();
        }
        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);
}


pr2ra(rf)               /* convert 24-bit scanlines to Radiance picture */
int     rf;
{
        COLR    *scanout;
        register int    x;
        int     y;
                                                /* allocate scanline */
        scanout = (COLR *)malloc(xmax*sizeof(COLR));
        if (scanout == NULL)
                quiterr("out of memory in pr2ra");
                                                /* convert image */
        for (y = ymax-1; y >= 0; y--) {
                for (x = 0; x < xmax; x++)
                        if (rf == RT_FORMAT_RGB) {
                                scanout[x][RED] = getc(stdin);
                                scanout[x][GRN] = getc(stdin);
                                scanout[x][BLU] = getc(stdin);
                        } else {
                                scanout[x][BLU] = getc(stdin);
                                scanout[x][GRN] = getc(stdin);
                                scanout[x][RED] = getc(stdin);
                        }
                if (feof(stdin) || ferror(stdin))
                        quiterr("error reading rasterfile");
                gambs_colrs(scanout, xmax);
                if (bradj)
                        shiftcolrs(scanout, xmax, bradj);
                if (fwritecolrs(scanout, xmax, stdout) < 0)
                        quiterr("error writing Radiance picture");
        }
                                                /* free scanline */
        free((char *)scanout);
}


ra2pr()                 /* convert Radiance scanlines to 24-bit rasterfile */
{
        COLR    *scanin;
        register int    x;
        int     y;
                                                /* allocate scanline */
        scanin = (COLR *)malloc(xmax*sizeof(COLR));
        if (scanin == NULL)
                quiterr("out of memory in pr2ra");
                                                /* convert image */
        for (y = ymax-1; y >= 0; y--) {
                if (freadcolrs(scanin, xmax, stdin) < 0)
                        quiterr("error reading Radiance picture");
                if (bradj)
                        shiftcolrs(scanin, xmax, bradj);
                colrs_gambs(scanin, xmax);
                for (x = 0; x < xmax; x++) {
                        putc(scanin[x][BLU], stdout);
                        putc(scanin[x][GRN], stdout);
                        putc(scanin[x][RED], stdout);
                }
                if (ferror(stdout))
                        quiterr("error writing rasterfile");
        }
                                                /* free scanline */
        free((char *)scanin);
}
Revision:	1.7
Committed:	Wed Aug 7 08:36:33 1991 UTC (32 years, 9 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.6:	+13 -2 lines
Log Message:	added -e +/-stops option
#	User	Rev	Content
1	greg	1.7	/* Copyright (c) 1991 Regents of the University of California */
2	greg	1.1
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* program to convert between RADIANCE and 24-bit rasterfiles.
9			*/
10
11			#include <stdio.h>
12
13			#include "rasterfile.h"
14
15			#include "color.h"
16
17			extern double atof(), pow();
18
19			double gamma = 2.0; /* gamma correction */
20
21	greg	1.7	int bradj = 0; /* brightness adjustment */
22
23	greg	1.1	char *progname;
24
25			int xmax, ymax;
26
27
28			main(argc, argv)
29			int argc;
30			char *argv[];
31			{
32			struct rasterfile head;
33			int reverse = 0;
34			int i;
35
36			progname = argv[0];
37
38			for (i = 1; i < argc; i++)
39			if (argv[i][0] == '-')
40			switch (argv[i][1]) {
41			case 'g':
42			gamma = atof(argv[++i]);
43			break;
44	greg	1.7	case 'e':
45			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
46			goto userr;
47			bradj = atoi(argv[++i]);
48			break;
49	greg	1.1	case 'r':
50			reverse = !reverse;
51			break;
52			default:
53			goto userr;
54			}
55			else
56			break;
57
58			if (i < argc-2)
59			goto userr;
60			if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
61			fprintf(stderr, "%s: can't open input \"%s\"\n",
62			progname, argv[i]);
63			exit(1);
64			}
65			if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
66			fprintf(stderr, "can't open output \"%s\"\n",
67			progname, argv[i+1]);
68			exit(1);
69			}
70	greg	1.3	setcolrgam(gamma);
71	greg	1.1	if (reverse) {
72			/* get header */
73			if (fread((char *)&head, sizeof(head), 1, stdin) != 1)
74			quiterr("missing header");
75			if (head.ras_magic != RAS_MAGIC)
76			quiterr("bad raster format");
77			xmax = head.ras_width;
78			ymax = head.ras_height;
79	greg	1.6	if ((head.ras_type != RT_STANDARD
80			&& head.ras_type != RT_FORMAT_RGB)
81			\|\| head.ras_maptype != RMT_NONE
82			\|\| head.ras_depth != 24)
83	greg	1.1	quiterr("incompatible format");
84			/* put header */
85			printargs(i, argv, stdout);
86	greg	1.5	fputformat(COLRFMT, stdout);
87	greg	1.1	putchar('\n');
88			fputresolu(YMAJOR\|YDECR, xmax, ymax, stdout);
89			/* convert file */
90	greg	1.6	pr2ra(head.ras_type);
91	greg	1.1	} else {
92	greg	1.5	/* get header info. */
93			if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
94			fgetresolu(&xmax, &ymax, stdin) != (YMAJOR\|YDECR))
95			quiterr("bad picture format");
96	greg	1.1	/* write rasterfile header */
97			head.ras_magic = RAS_MAGIC;
98			head.ras_width = xmax;
99			head.ras_height = ymax;
100			head.ras_depth = 24;
101			head.ras_length = xmaxymax3;
102			head.ras_type = RT_STANDARD;
103			head.ras_maptype = RMT_NONE;
104			head.ras_maplength = 0;
105			fwrite((char *)&head, sizeof(head), 1, stdout);
106			/* convert file */
107			ra2pr();
108			}
109			exit(0);
110			userr:
111	greg	1.7	fprintf(stderr, "Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n",
112	greg	1.1	progname);
113			exit(1);
114			}
115
116
117			quiterr(err) /* print message and exit */
118			char *err;
119			{
120			if (err != NULL) {
121			fprintf(stderr, "%s: %s\n", progname, err);
122			exit(1);
123			}
124			exit(0);
125			}
126
127
128	greg	1.6	pr2ra(rf) /* convert 24-bit scanlines to Radiance picture */
129			int rf;
130	greg	1.1	{
131	greg	1.3	COLR *scanout;
132	greg	1.1	register int x;
133			int y;
134			/* allocate scanline */
135	greg	1.3	scanout = (COLR )malloc(xmaxsizeof(COLR));
136	greg	1.1	if (scanout == NULL)
137			quiterr("out of memory in pr2ra");
138			/* convert image */
139			for (y = ymax-1; y >= 0; y--) {
140	greg	1.6	for (x = 0; x < xmax; x++)
141			if (rf == RT_FORMAT_RGB) {
142			scanout[x][RED] = getc(stdin);
143			scanout[x][GRN] = getc(stdin);
144			scanout[x][BLU] = getc(stdin);
145			} else {
146			scanout[x][BLU] = getc(stdin);
147			scanout[x][GRN] = getc(stdin);
148			scanout[x][RED] = getc(stdin);
149			}
150	greg	1.3	if (feof(stdin) \|\| ferror(stdin))
151			quiterr("error reading rasterfile");
152			gambs_colrs(scanout, xmax);
153	greg	1.7	if (bradj)
154			shiftcolrs(scanout, xmax, bradj);
155	greg	1.3	if (fwritecolrs(scanout, xmax, stdout) < 0)
156	greg	1.1	quiterr("error writing Radiance picture");
157			}
158			/* free scanline */
159			free((char *)scanout);
160			}
161
162
163			ra2pr() /* convert Radiance scanlines to 24-bit rasterfile */
164			{
165	greg	1.3	COLR *scanin;
166	greg	1.1	register int x;
167			int y;
168			/* allocate scanline */
169	greg	1.3	scanin = (COLR )malloc(xmaxsizeof(COLR));
170	greg	1.1	if (scanin == NULL)
171			quiterr("out of memory in pr2ra");
172			/* convert image */
173			for (y = ymax-1; y >= 0; y--) {
174	greg	1.3	if (freadcolrs(scanin, xmax, stdin) < 0)
175	greg	1.1	quiterr("error reading Radiance picture");
176	greg	1.7	if (bradj)
177			shiftcolrs(scanin, xmax, bradj);
178	greg	1.3	colrs_gambs(scanin, xmax);
179	greg	1.1	for (x = 0; x < xmax; x++) {
180	greg	1.4	putc(scanin[x][BLU], stdout);
181			putc(scanin[x][GRN], stdout);
182	greg	1.3	putc(scanin[x][RED], stdout);
183	greg	1.1	}
184			if (ferror(stdout))
185			quiterr("error writing rasterfile");
186			}
187			/* free scanline */
188			free((char *)scanin);
189			}