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 = 2.2;                    /* 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];

        head.ras_type = RT_STANDARD;
        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':
                                if (!strcmp(argv[i], "-rgb"))
                                        head.ras_type = RT_FORMAT_RGB;
                                else
                                        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, "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_maptype = RMT_NONE;
                head.ras_maplength = 0;
                fwrite((char *)&head, sizeof(head), 1, stdout);
                                        /* convert file */
                ra2pr(head.ras_type);
        }
        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--) {
                if (rf == RT_FORMAT_RGB)
                        for (x = 0; x < xmax; x++) {
                                scanout[x][RED] = getc(stdin);
                                scanout[x][GRN] = getc(stdin);
                                scanout[x][BLU] = getc(stdin);
                        }
                else
                        for (x = 0; x < xmax; x++) {
                                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(rf)               /* convert Radiance scanlines to 24-bit rasterfile */
int  rf;
{
        COLR    *scanin;
        register int    x;
        int     y;
                                                /* allocate scanline */
        scanin = (COLR *)malloc(xmax*sizeof(COLR));
        if (scanin == NULL)
                quiterr("out of memory in ra2pr");
                                                /* 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);
                if (rf == RT_FORMAT_RGB)
                        for (x = 0; x < xmax; x++) {
                                putc(scanin[x][RED], stdout);
                                putc(scanin[x][GRN], stdout);
                                putc(scanin[x][BLU], stdout);
                        }
                else
                        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:	1.10
Committed:	Mon Oct 14 17:09:39 1991 UTC (32 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.9:	+1 -1 lines
Log Message:	changed default gamma correction to 2.2
#	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	greg	1.10	double gamma = 2.2; /* gamma correction */
20	greg	1.1
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	greg	1.9	head.ras_type = RT_STANDARD;
39	greg	1.1	for (i = 1; i < argc; i++)
40			if (argv[i][0] == '-')
41			switch (argv[i][1]) {
42			case 'g':
43			gamma = atof(argv[++i]);
44			break;
45	greg	1.7	case 'e':
46			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
47			goto userr;
48			bradj = atoi(argv[++i]);
49			break;
50	greg	1.1	case 'r':
51	greg	1.9	if (!strcmp(argv[i], "-rgb"))
52			head.ras_type = RT_FORMAT_RGB;
53			else
54			reverse = 1;
55	greg	1.1	break;
56			default:
57			goto userr;
58			}
59			else
60			break;
61
62			if (i < argc-2)
63			goto userr;
64			if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
65			fprintf(stderr, "%s: can't open input \"%s\"\n",
66			progname, argv[i]);
67			exit(1);
68			}
69			if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
70			fprintf(stderr, "can't open output \"%s\"\n",
71			progname, argv[i+1]);
72			exit(1);
73			}
74	greg	1.3	setcolrgam(gamma);
75	greg	1.1	if (reverse) {
76			/* get header */
77			if (fread((char *)&head, sizeof(head), 1, stdin) != 1)
78			quiterr("missing header");
79			if (head.ras_magic != RAS_MAGIC)
80			quiterr("bad raster format");
81			xmax = head.ras_width;
82			ymax = head.ras_height;
83	greg	1.6	if ((head.ras_type != RT_STANDARD
84			&& head.ras_type != RT_FORMAT_RGB)
85			\|\| head.ras_maptype != RMT_NONE
86			\|\| head.ras_depth != 24)
87	greg	1.1	quiterr("incompatible format");
88			/* put header */
89			printargs(i, argv, stdout);
90	greg	1.5	fputformat(COLRFMT, stdout);
91	greg	1.1	putchar('\n');
92			fputresolu(YMAJOR\|YDECR, xmax, ymax, stdout);
93			/* convert file */
94	greg	1.6	pr2ra(head.ras_type);
95	greg	1.1	} else {
96	greg	1.5	/* get header info. */
97			if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
98			fgetresolu(&xmax, &ymax, stdin) != (YMAJOR\|YDECR))
99			quiterr("bad picture format");
100	greg	1.1	/* write rasterfile header */
101			head.ras_magic = RAS_MAGIC;
102			head.ras_width = xmax;
103			head.ras_height = ymax;
104			head.ras_depth = 24;
105			head.ras_length = xmaxymax3;
106			head.ras_maptype = RMT_NONE;
107			head.ras_maplength = 0;
108			fwrite((char *)&head, sizeof(head), 1, stdout);
109			/* convert file */
110	greg	1.9	ra2pr(head.ras_type);
111	greg	1.1	}
112			exit(0);
113			userr:
114	greg	1.7	fprintf(stderr, "Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n",
115	greg	1.1	progname);
116			exit(1);
117			}
118
119
120			quiterr(err) /* print message and exit */
121			char *err;
122			{
123			if (err != NULL) {
124			fprintf(stderr, "%s: %s\n", progname, err);
125			exit(1);
126			}
127			exit(0);
128			}
129
130
131	greg	1.6	pr2ra(rf) /* convert 24-bit scanlines to Radiance picture */
132			int rf;
133	greg	1.1	{
134	greg	1.3	COLR *scanout;
135	greg	1.1	register int x;
136			int y;
137			/* allocate scanline */
138	greg	1.3	scanout = (COLR )malloc(xmaxsizeof(COLR));
139	greg	1.1	if (scanout == NULL)
140			quiterr("out of memory in pr2ra");
141			/* convert image */
142			for (y = ymax-1; y >= 0; y--) {
143	greg	1.9	if (rf == RT_FORMAT_RGB)
144			for (x = 0; x < xmax; x++) {
145	greg	1.6	scanout[x][RED] = getc(stdin);
146			scanout[x][GRN] = getc(stdin);
147			scanout[x][BLU] = getc(stdin);
148	greg	1.9	}
149			else
150			for (x = 0; x < xmax; x++) {
151	greg	1.6	scanout[x][BLU] = getc(stdin);
152			scanout[x][GRN] = getc(stdin);
153			scanout[x][RED] = getc(stdin);
154			}
155	greg	1.3	if (feof(stdin) \|\| ferror(stdin))
156			quiterr("error reading rasterfile");
157			gambs_colrs(scanout, xmax);
158	greg	1.7	if (bradj)
159			shiftcolrs(scanout, xmax, bradj);
160	greg	1.3	if (fwritecolrs(scanout, xmax, stdout) < 0)
161	greg	1.1	quiterr("error writing Radiance picture");
162			}
163			/* free scanline */
164			free((char *)scanout);
165			}
166
167
168	greg	1.9	ra2pr(rf) /* convert Radiance scanlines to 24-bit rasterfile */
169			int rf;
170	greg	1.1	{
171	greg	1.3	COLR *scanin;
172	greg	1.1	register int x;
173			int y;
174			/* allocate scanline */
175	greg	1.3	scanin = (COLR )malloc(xmaxsizeof(COLR));
176	greg	1.1	if (scanin == NULL)
177	greg	1.8	quiterr("out of memory in ra2pr");
178	greg	1.1	/* convert image */
179			for (y = ymax-1; y >= 0; y--) {
180	greg	1.3	if (freadcolrs(scanin, xmax, stdin) < 0)
181	greg	1.1	quiterr("error reading Radiance picture");
182	greg	1.7	if (bradj)
183			shiftcolrs(scanin, xmax, bradj);
184	greg	1.3	colrs_gambs(scanin, xmax);
185	greg	1.9	if (rf == RT_FORMAT_RGB)
186			for (x = 0; x < xmax; x++) {
187			putc(scanin[x][RED], stdout);
188			putc(scanin[x][GRN], stdout);
189			putc(scanin[x][BLU], stdout);
190			}
191			else
192			for (x = 0; x < xmax; x++) {
193			putc(scanin[x][BLU], stdout);
194			putc(scanin[x][GRN], stdout);
195			putc(scanin[x][RED], stdout);
196			}
197	greg	1.1	if (ferror(stdout))
198			quiterr("error writing rasterfile");
199			}
200			/* free scanline */
201			free((char *)scanin);
202			}