src/px/ra_rgbe.c

#ifndef lint
static const char       RCSid[] = "$Id: ra_rgbe.c,v 2.16 2004/01/02 12:47:01 schorsch Exp $";
#endif
/*
 *  program to convert from RADIANCE RLE to flat format
 */

#include  <stdio.h>
#include  <math.h>
#include  <time.h>
#include  <string.h>

#include  "platform.h"
#include  "rtprocess.h"
#include  "color.h"
#include  "resolu.h"

#define dumpheader(fp)  fwrite(headlines, 1, headlen, fp)

int  bradj = 0;                         /* brightness adjustment */
int  doflat = 1;                        /* produce flat file */
int  force = 0;                         /* force file overwrite? */
int  findframe = 0;                     /* find a specific frame? */
int  frameno = 0;                       /* current frame number */
int  fmterr = 0;                        /* got input format error */
char  *headlines;                       /* current header info. */
int  headlen;                           /* current header length */

char  *progname;

static gethfunc addhline;
static int transfer(char *ospec);
static int loadheader(FILE *fp);


int
main(int  argc, char  *argv[])
{
        char    *ospec;
        int  i;

        progname = argv[0];

        for (i = 1; i < argc; i++)
                if (argv[i][0] == '-')
                        switch (argv[i][1]) {
                        case 'r':
                                doflat = !doflat;
                                break;
                        case 'e':
                                if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
                                        goto userr;
                                bradj = atoi(argv[++i]);
                                break;
                        case 'n':
                                findframe = atoi(argv[++i]);
                                break;
                        case 'f':
                                force++;
                                break;
                        case '\0':
                                goto gotfile;
                        default:
                                goto userr;
                        }
                else
                        break;
gotfile:
        if (i < argc-2)
                goto userr;
        if (i <= argc-1 && strcmp(argv[i], "-") &&
                        freopen(argv[i], "r", stdin) == NULL) {
                fprintf(stderr, "%s: can't open input \"%s\"\n",
                                progname, argv[i]);
                exit(1);
        }
        SET_FILE_BINARY(stdin);
        ospec = i==argc-2 ? argv[i+1] : (char *)NULL;
        while (transfer(ospec))
                ;
        exit(0);
userr:
        fprintf(stderr,
        "Usage: %s [-r][-e +/-stops][-f][-n frame] [input [outspec]]\n",
                        progname);
        exit(1);
}


static int
transfer(                       /* transfer a Radiance picture */
        char    *ospec
)
{
        char    oname[PATH_MAX];
        FILE    *fp;
        int     order;
        int     xmax, ymax;
        COLR    *scanin;
        int     y;
                                        /* get header info. */
        if (!(y = loadheader(stdin)))
                return(0);
        if (y < 0 || (order = fgetresolu(&xmax, &ymax, stdin)) < 0) {
                fprintf(stderr, "%s: bad input format\n", progname);
                exit(1);
        }
                                        /* did we pass the target frame? */
        if (findframe && findframe < frameno)
                return(0);
                                        /* allocate scanline */
        scanin = (COLR *)tempbuffer(xmax*sizeof(COLR));
        if (scanin == NULL) {
                perror(progname);
                exit(1);
        }
                                        /* skip frame? */
        if (findframe > frameno) {
                for (y = ymax; y--; )
                        if (freadcolrs(scanin, xmax, stdin) < 0) {
                                fprintf(stderr,
                                        "%s: error reading input picture\n",
                                                progname);
                                exit(1);
                        }
                return(1);
        }
                                        /* open output file/command */
        if (ospec == NULL) {
                strcpy(oname, "<stdout>");
                fp = stdout;
        } else {
                sprintf(oname, ospec, frameno);
                if (oname[0] == '!') {
                        if ((fp = popen(oname+1, "w")) == NULL) {
                                fprintf(stderr, "%s: cannot start \"%s\"\n",
                                                progname, oname);
                                exit(1);
                        }
                } else {
                        if (!force && access(oname, 0) >= 0) {
                                fprintf(stderr,
                                        "%s: output file \"%s\" exists\n",
                                                progname, oname);
                                exit(1);
                        }
                        if ((fp = fopen(oname, "w")) == NULL) {
                                fprintf(stderr, "%s: ", progname);
                                perror(oname);
                                exit(1);
                        }
                }
        }
        SET_FILE_BINARY(fp);
        dumpheader(fp);                 /* put out header */
        fputs(progname, fp);
        if (bradj)
                fprintf(fp, " -e %+d", bradj);
        if (!doflat)
                fputs(" -r", fp);
        fputc('\n', fp);
        if (bradj)
                fputexpos(pow(2.0, (double)bradj), fp);
        fputc('\n', fp);
        fputresolu(order, xmax, ymax, fp);
                                        /* transfer picture */
        for (y = ymax; y--; ) {
                if (freadcolrs(scanin, xmax, stdin) < 0) {
                        fprintf(stderr, "%s: error reading input picture\n",
                                        progname);
                        exit(1);
                }
                if (bradj)
                        shiftcolrs(scanin, xmax, bradj);
                if (doflat)
                        fwrite((char *)scanin, sizeof(COLR), xmax, fp);
                else
                        fwritecolrs(scanin, xmax, fp);
                if (ferror(fp)) {
                        fprintf(stderr, "%s: error writing output to \"%s\"\n",
                                        progname, oname);
                        exit(1);
                }
        }
                                        /* clean up */
        if (oname[0] == '!')
                pclose(fp);
        else if (ospec != NULL)
                fclose(fp);
        return(1);
}


static int
addhline(                       /* add a line to our info. header */
        char    *s,
        void    *p
)
{
        char    fmt[32];
        int     n;

        if (formatval(fmt, s))
                fmterr += !globmatch(PICFMT, fmt);
        else if (!strncmp(s, "FRAME=", 6))
                frameno = atoi(s+6);
        n = strlen(s);
        if (headlen)
                headlines = (char *)realloc((void *)headlines, headlen+n+1);
        else
                headlines = (char *)malloc(n+1);
        if (headlines == NULL) {
                perror(progname);
                exit(1);
        }
        strcpy(headlines+headlen, s);
        headlen += n;
        return(0);
}


static int
loadheader(                     /* load an info. header into memory */
        FILE    *fp
)
{
        fmterr = 0; frameno = 0;
        if (headlen) {                  /* free old header */
                free(headlines);
                headlen = 0;
        }
        if (getheader(fp, addhline, NULL) < 0)
                return(0);
        if (fmterr)
                return(-1);
        return(1);
}
Revision:	2.17
Committed:	Sun Mar 28 20:33:14 2004 UTC (20 years, 1 month ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad4R2P2, rad5R0, rad3R7P2, rad3R7P1, rad4R2, rad4R1, rad4R0, rad3R6, rad3R6P1, rad3R8, rad3R9, rad4R2P1
Changes since 2.16:	+13 -12 lines
Log Message:	Continued ANSIfication, and other fixes and clarifications.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.17	static const char RCSid[] = "$Id: ra_rgbe.c,v 2.16 2004/01/02 12:47:01 schorsch Exp $";
3	greg	1.1	#endif
4			/*
5			* program to convert from RADIANCE RLE to flat format
6			*/
7
8			#include <stdio.h>
9	greg	2.4	#include <math.h>
10	greg	2.10	#include <time.h>
11	schorsch	2.13	#include <string.h>
12	schorsch	2.12
13			#include "platform.h"
14	schorsch	2.14	#include "rtprocess.h"
15	greg	2.4	#include "color.h"
16			#include "resolu.h"
17
18	gregl	2.8	#define dumpheader(fp) fwrite(headlines, 1, headlen, fp)
19
20	greg	1.1	int bradj = 0; /* brightness adjustment */
21			int doflat = 1; /* produce flat file */
22	gregl	2.8	int force = 0; /* force file overwrite? */
23			int findframe = 0; /* find a specific frame? */
24			int frameno = 0; /* current frame number */
25			int fmterr = 0; /* got input format error */
26			char headlines; / current header info. */
27			int headlen; /* current header length */
28
29	greg	1.1	char *progname;
30
31	schorsch	2.16	static gethfunc addhline;
32	schorsch	2.17	static int transfer(char *ospec);
33			static int loadheader(FILE *fp);
34	schorsch	2.16
35	greg	1.1
36	schorsch	2.17	int
37			main(int argc, char *argv[])
38	greg	1.1	{
39	gregl	2.8	char *ospec;
40	greg	1.1	int i;
41	gregl	2.7
42	greg	1.1	progname = argv[0];
43
44			for (i = 1; i < argc; i++)
45			if (argv[i][0] == '-')
46			switch (argv[i][1]) {
47			case 'r':
48			doflat = !doflat;
49			break;
50			case 'e':
51			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
52			goto userr;
53			bradj = atoi(argv[++i]);
54			break;
55	gregl	2.8	case 'n':
56			findframe = atoi(argv[++i]);
57			break;
58			case 'f':
59			force++;
60			break;
61			case '\0':
62			goto gotfile;
63	greg	1.1	default:
64			goto userr;
65			}
66			else
67			break;
68	gregl	2.8	gotfile:
69	greg	1.1	if (i < argc-2)
70			goto userr;
71	gregl	2.8	if (i <= argc-1 && strcmp(argv[i], "-") &&
72			freopen(argv[i], "r", stdin) == NULL) {
73	greg	1.1	fprintf(stderr, "%s: can't open input \"%s\"\n",
74			progname, argv[i]);
75			exit(1);
76			}
77	schorsch	2.12	SET_FILE_BINARY(stdin);
78	gregl	2.8	ospec = i==argc-2 ? argv[i+1] : (char *)NULL;
79			while (transfer(ospec))
80			;
81	greg	1.1	exit(0);
82			userr:
83	gregl	2.8	fprintf(stderr,
84			"Usage: %s [-r][-e +/-stops][-f][-n frame] [input [outspec]]\n",
85	greg	1.1	progname);
86			exit(1);
87			}
88
89
90	schorsch	2.17	static int
91			transfer( /* transfer a Radiance picture */
92			char *ospec
93			)
94	greg	1.1	{
95	schorsch	2.15	char oname[PATH_MAX];
96	gregl	2.8	FILE *fp;
97	greg	1.2	int order;
98	greg	2.3	int xmax, ymax;
99	greg	1.1	COLR *scanin;
100			int y;
101	gregl	2.8	/* get header info. */
102			if (!(y = loadheader(stdin)))
103			return(0);
104			if (y < 0 \|\| (order = fgetresolu(&xmax, &ymax, stdin)) < 0) {
105			fprintf(stderr, "%s: bad input format\n", progname);
106			exit(1);
107			}
108			/* did we pass the target frame? */
109			if (findframe && findframe < frameno)
110			return(0);
111			/* allocate scanline */
112			scanin = (COLR )tempbuffer(xmaxsizeof(COLR));
113			if (scanin == NULL) {
114			perror(progname);
115			exit(1);
116			}
117			/* skip frame? */
118			if (findframe > frameno) {
119			for (y = ymax; y--; )
120			if (freadcolrs(scanin, xmax, stdin) < 0) {
121			fprintf(stderr,
122			"%s: error reading input picture\n",
123			progname);
124			exit(1);
125			}
126			return(1);
127			}
128			/* open output file/command */
129			if (ospec == NULL) {
130			strcpy(oname, "<stdout>");
131			fp = stdout;
132			} else {
133			sprintf(oname, ospec, frameno);
134			if (oname[0] == '!') {
135			if ((fp = popen(oname+1, "w")) == NULL) {
136			fprintf(stderr, "%s: cannot start \"%s\"\n",
137			progname, oname);
138			exit(1);
139			}
140			} else {
141			if (!force && access(oname, 0) >= 0) {
142			fprintf(stderr,
143			"%s: output file \"%s\" exists\n",
144			progname, oname);
145			exit(1);
146			}
147			if ((fp = fopen(oname, "w")) == NULL) {
148			fprintf(stderr, "%s: ", progname);
149			perror(oname);
150			exit(1);
151			}
152			}
153			}
154	schorsch	2.12	SET_FILE_BINARY(fp);
155	gregl	2.8	dumpheader(fp); /* put out header */
156			fputs(progname, fp);
157	greg	1.1	if (bradj)
158	gregl	2.8	fprintf(fp, " -e %+d", bradj);
159	gregl	2.7	if (!doflat)
160	gregl	2.8	fputs(" -r", fp);
161			fputc('\n', fp);
162	greg	2.2	if (bradj)
163	gregl	2.8	fputexpos(pow(2.0, (double)bradj), fp);
164			fputc('\n', fp);
165			fputresolu(order, xmax, ymax, fp);
166			/* transfer picture */
167	gregl	2.7	for (y = ymax; y--; ) {
168	gregl	2.8	if (freadcolrs(scanin, xmax, stdin) < 0) {
169			fprintf(stderr, "%s: error reading input picture\n",
170			progname);
171			exit(1);
172			}
173	greg	1.1	if (bradj)
174			shiftcolrs(scanin, xmax, bradj);
175			if (doflat)
176	gregl	2.8	fwrite((char *)scanin, sizeof(COLR), xmax, fp);
177	greg	1.1	else
178	gregl	2.8	fwritecolrs(scanin, xmax, fp);
179			if (ferror(fp)) {
180			fprintf(stderr, "%s: error writing output to \"%s\"\n",
181			progname, oname);
182			exit(1);
183			}
184	greg	1.1	}
185	gregl	2.8	/* clean up */
186			if (oname[0] == '!')
187			pclose(fp);
188			else if (ospec != NULL)
189			fclose(fp);
190			return(1);
191			}
192
193
194	schorsch	2.16	static int
195			addhline( /* add a line to our info. header */
196			char *s,
197			void *p
198			)
199	gregl	2.8	{
200			char fmt[32];
201			int n;
202
203			if (formatval(fmt, s))
204			fmterr += !globmatch(PICFMT, fmt);
205			else if (!strncmp(s, "FRAME=", 6))
206			frameno = atoi(s+6);
207			n = strlen(s);
208			if (headlen)
209	greg	2.11	headlines = (char )realloc((void )headlines, headlen+n+1);
210	gregl	2.8	else
211			headlines = (char *)malloc(n+1);
212			if (headlines == NULL) {
213			perror(progname);
214			exit(1);
215			}
216			strcpy(headlines+headlen, s);
217			headlen += n;
218	gwlarson	2.9	return(0);
219	gregl	2.8	}
220
221
222	schorsch	2.17	static int
223			loadheader( /* load an info. header into memory */
224			FILE *fp
225			)
226	gregl	2.8	{
227			fmterr = 0; frameno = 0;
228			if (headlen) { /* free old header */
229			free(headlines);
230			headlen = 0;
231			}
232			if (getheader(fp, addhline, NULL) < 0)
233			return(0);
234			if (fmterr)
235			return(-1);
236			return(1);
237	greg	1.1	}