src/px/ra_pict.c

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

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

/*              Convert an Radiance image to APPLE pict format.
 *
 *                      Orginally Iris to PICT by       Paul Haeberli - 1990
 *                      Hacked into Rad to PICT by Russell Street 1990
 *
 *      History:
 *          V 1                 -- Does basic conversion
 *          V 1.1 (2/11/91)     -- Added options for Gamma
 *                              -- verbose option
 *                              -- man page
 *                              -- better about allocating buffers
 *          V 1.2 (19/11/91)    -- Revised to handle opening "The Radiance Way"
 *                              -- Added exposure level adjustment
 */

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

#include "pict.h"
#include "color.h"
#include "resolu.h"

extern char     *malloc();

int     outbytes;                   /* This had better be 32 bits! */
char    *progname;
int     verbose = 0;
float   gamma = 2.0;
int     bradj = 0;

        /* First some utility routines */

putrect(xorg,yorg,xsize,ysize)
int xorg, yorg, xsize, ysize;
{
    putashort(yorg);
    putashort(xorg);
    putashort(ysize);
    putashort(xsize);
}

putfprect(xorg,yorg,xsize,ysize)
int xorg, yorg, xsize, ysize;
{
    putalong(yorg<<16);
    putalong(xorg<<16);
    putalong(ysize<<16);
    putalong(xsize<<16);
}

putalong(l)
long l;
{
    putbyte((l>>24)&0xff);
    putbyte((l>>16)&0xff);
    putbyte((l>>8)&0xff);
    putbyte((l>>0)&0xff);
}

putashort(s)
short s;
{
    putbyte((s>>8)&0xff);
    putbyte((s>>0)&0xff);
}

putbyte(b)
int b;
{
    if (putc(b,stdout) == EOF && ferror(stdout)) {
        fprintf(stderr,"%s: error on write\n", progname);
        exit(1);
    }
    outbytes++;
}

putbytes(buf,n)
unsigned char *buf;
int n;
{
    if(!fwrite(buf,n,1,stdout)) {
        fprintf(stderr,"%s: error on write\n", progname);
        exit(1);
    }
    outbytes+=n;
}

main(argc,argv)
int argc;
char **argv;
{
    int xsize, ysize;
    int i, picsize;
    int ssizepos, lsizepos;
#ifdef MSDOS
    extern int  _fmode;
    _fmode = O_BINARY;
    setmode(fileno(stdin), O_BINARY);
    setmode(fileno(stdout), O_BINARY);
#endif
    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] != '-')
                                   usage();
                                else
                                    bradj = atoi(argv[++i]);
                                break;

                case 'v':       ;
                                verbose = 1;
                                break;

                case 'r':       fprintf(stderr, "Sorry. Get a Macintosh :-)\n");
                                exit(1);

                case '-':       i++;
                                goto outofparse;
                                break;              /* NOTREACHED */

                otherwise:      usage();
                                break;
                 }
        else
            break;

outofparse:

    if (i < argc - 2)
        usage();

    if (i <= argc - 1 && freopen(argv[i], "r", stdin) == NULL) {
        fprintf(stderr, "%s: can not open input \"%s\"\n",
            progname, argv[i]);
        exit(1);
    }

    if (i <= argc - 2 && freopen(argv[i+1], "w", stdout) == NULL) {
        fprintf(stderr, "%s: can not open input \"%s\"\n",
            progname, argv[i+1]);
        exit(1);
    }
        
#ifdef DEBUG
        fprintf(stderr, "Input file: %s\n", i <= argc - 1 ? argv[i] : "stdin");
        fprintf(stderr, "Outut file: %s\n", i <= argc - 2 ? argv[i+1] : "stdout" );
        fprintf(stderr, "Gamma: %f\n", gamma);
        fprintf(stderr, "Brightness adjust: %d\n", bradj);
        fprintf(stderr, "Verbose: %s\n", verbose ? "on" : "off");
#endif


             /* OK. Now we read the size of the Radiance picture */
    if (checkheader(stdin, COLRFMT, NULL) < 0 ||
            fgetresolu(&xsize, &ysize, stdin) < 0 /* != (YMAJOR|YDECR) */ ) {
        fprintf(stderr, "%s: not a radiance picture\n", progname);
        exit(1);
        }

            /* Set the gamma correction */

    setcolrgam(gamma);

    for(i=0; i<HEADER_SIZE; i++) 
        putbyte(0);

    ssizepos = outbytes;
    putashort(0);               /* low 16 bits of file size less HEADER_SIZE */
    putrect(0,0,xsize,ysize);   /* bounding box of picture */
    putashort(PICT_picVersion);
    putashort(0x02ff);          /* version 2 pict */
    putashort(PICT_reservedHeader);     /* reserved header opcode */

    lsizepos = outbytes;
    putalong(0);                /* full size of the file */
    putfprect(0,0,xsize,ysize); /* fixed point bounding box of picture */
    putalong(0);                /* reserved */

    putashort(PICT_clipRgn);    /* the clip region */
    putashort(10);
    putrect(0,0,xsize,ysize);

    if (verbose)
        fprintf(stderr, "%s: The picture is %d by %d, with a gamma of %f\n",
            progname, xsize, ysize, gamma);


    putpict(xsize, ysize);      /* Here is where all the work is done */

    putashort(PICT_EndOfPicture); /* end of pict */

    picsize = outbytes-HEADER_SIZE;
    fseek(stdout,ssizepos,0);
    putashort(picsize&0xffff);
    fseek(stdout,lsizepos,0);
    putalong(picsize);

    fclose(stdout);
    fclose(stdin);
    
    exit(0);
    return 0;       /* lint fodder */
}

putpict(xsize, ysize)
int xsize;
int ysize;
{
    int     y;
    int     nbytes, rowbytes;
    char    *cbuf, *pbuf;

    cbuf = malloc(4 * xsize);

    if (cbuf == NULL) {
        fprintf(stderr, "%s: not enough memory\n", progname);
        exit(1);
        }

    pbuf = malloc(4 * xsize);

    if (pbuf == NULL) {
        fprintf(stderr, "%s: not enough memory\n", progname);
        exit(1);
        }

    putashort(PICT_Pack32BitsRect); /* 32 bit rgb */
    rowbytes = 4*xsize;
    putalong(0x000000ff);               /* base address */


    if(rowbytes&1)
        rowbytes++;
    putashort(rowbytes|0x8000); /* rowbytes */
    putrect(0,0,xsize,ysize);   /* bounds */
    putashort(0);               /* version */

    putashort(4);       /* packtype */
    putalong(0);        /* packsize */
    putalong(72<<16);   /* hres */
    putalong(72<<16);   /* vres */

    putashort(16);      /* pixeltype */
    putashort(32);      /* pixelsize */
    putashort(3);       /* cmpcount */


    putashort(8);       /* cmpsize */
    putalong(0);        /* planebytes */
    putalong(0);        /* pmtable */
    putalong(0);        /* pmreserved */


    putrect(0,0,xsize,ysize);   /* scr rect */
    putrect(0,0,xsize,ysize);   /* dest rect */


    putashort(0x40);    /* transfer mode */

    for(y=0; y<ysize; y++) {
        getrow(stdin, cbuf, xsize);

        nbytes = packbits(cbuf,pbuf,24*xsize);
        if(rowbytes>250) 
            putashort(nbytes);
        else
            putbyte(nbytes);
        putbytes(pbuf,nbytes);
        }

    if(outbytes&1) 
        putbyte(0);

    free(cbuf);
    free(pbuf);
}

int getrow(in, cbuf, xsize)
FILE *in;
char *cbuf;
int xsize;
{
    extern char *tempbuffer();          /* defined in color.c */
    COLR    *scanin = NULL;
    int     x;

    if ((scanin = (COLR *)tempbuffer(xsize*sizeof(COLR))) == NULL) {
        fprintf(stderr, "%s: not enough memory\n", progname);
        exit(1);
    }

    if (freadcolrs(scanin, xsize, in) < 0) {
        fprintf(stderr, "%s: read error\n", progname);
        exit(1);
        }

    if (bradj)      /* Adjust exposure level */
        shiftcolrs(scanin, xsize, bradj);


    colrs_gambs(scanin, xsize);     /* Gamma correct it */
    
    for (x = 0; x < xsize; x++) {
        cbuf[x] = scanin[x][RED];
        cbuf[xsize + x] = scanin[x][GRN];
        cbuf[2*xsize + x] = scanin[x][BLU];
        }

}


packbits(ibits,pbits,nbits)
unsigned char *ibits, *pbits;
int nbits;
{
    int bytes;                      /* UNUSED */
    unsigned char *sptr;
    unsigned char *ibitsend;
    unsigned char *optr = pbits;
    int nbytes, todo, cc, count;

    nbytes = ((nbits-1)/8)+1;
    ibitsend = ibits+nbytes;
    while(ibits<ibitsend) {
        sptr = ibits;
        ibits += 2;
        while((ibits<ibitsend)&&((ibits[-2]!=ibits[-1])||(ibits[-1]!=ibits[0])))
            ibits++;
        if(ibits != ibitsend) {
            ibits -= 2;
        }
        count = ibits-sptr;
        while(count) {
            todo = count>127 ? 127:count;
            count -= todo;
            *optr++ = todo-1;
            while(todo--)
                *optr++ = *sptr++;
        }
        if(ibits == ibitsend)
            break;
        sptr = ibits;
        cc = *ibits++;
        while( (ibits<ibitsend) && (*ibits == cc) )
            ibits++;
        count = ibits-sptr;
        while(count) {
            todo = count>128 ? 128:count;
            count -= todo;
            *optr++ = 257-todo;
            *optr++ = cc;
        }
    }
    return optr-pbits;
}

usage()
{
    fprintf(stderr, "Usage: %s [-v] [-g gamma] [infile [outfile]]\n",
        progname);
    exit(2);
}
Revision:	2.6
Committed:	Fri Jun 4 14:47:37 1993 UTC (32 years, 4 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.5:	+1 -0 lines
Log Message:	added math.h for atof() usage
#	User	Rev	Content
1	greg	2.5	/* Copyright (c) 1992 Regents of the University of California */
2
3	greg	1.1	#ifndef lint
4	greg	2.5	static char SCCSid[] = "$SunId$ LBL";
5	greg	1.1	#endif
6	greg	1.4
7	greg	2.5	/* Convert an Radiance image to APPLE pict format.
8	greg	2.2	*
9			* Orginally Iris to PICT by Paul Haeberli - 1990
10			* Hacked into Rad to PICT by Russell Street 1990
11			*
12			* History:
13			* V 1 -- Does basic conversion
14			* V 1.1 (2/11/91) -- Added options for Gamma
15			* -- verbose option
16			* -- man page
17			* -- better about allocating buffers
18			* V 1.2 (19/11/91) -- Revised to handle opening "The Radiance Way"
19			* -- Added exposure level adjustment
20			*/
21
22	greg	1.1	#include <stdio.h>
23	greg	2.6	#include <math.h>
24	greg	2.5	#ifdef MSDOS
25			#include <fcntl.h>
26			#endif
27	greg	2.2
28	greg	1.1	#include "pict.h"
29			#include "color.h"
30	greg	1.4	#include "resolu.h"
31	greg	2.3
32			extern char *malloc();
33	greg	1.3
34	greg	2.2	int outbytes; /* This had better be 32 bits! */
35			char *progname;
36			int verbose = 0;
37			float gamma = 2.0;
38			int bradj = 0;
39	greg	1.1
40	greg	2.2	/* First some utility routines */
41	greg	1.1
42			putrect(xorg,yorg,xsize,ysize)
43			int xorg, yorg, xsize, ysize;
44			{
45			putashort(yorg);
46			putashort(xorg);
47			putashort(ysize);
48			putashort(xsize);
49			}
50
51			putfprect(xorg,yorg,xsize,ysize)
52			int xorg, yorg, xsize, ysize;
53			{
54			putalong(yorg<<16);
55			putalong(xorg<<16);
56			putalong(ysize<<16);
57			putalong(xsize<<16);
58			}
59
60			putalong(l)
61			long l;
62			{
63			putbyte((l>>24)&0xff);
64			putbyte((l>>16)&0xff);
65			putbyte((l>>8)&0xff);
66			putbyte((l>>0)&0xff);
67			}
68
69			putashort(s)
70			short s;
71			{
72			putbyte((s>>8)&0xff);
73			putbyte((s>>0)&0xff);
74			}
75
76			putbyte(b)
77	greg	2.2	int b;
78	greg	1.1	{
79	greg	2.2	if (putc(b,stdout) == EOF && ferror(stdout)) {
80			fprintf(stderr,"%s: error on write\n", progname);
81	greg	1.1	exit(1);
82			}
83			outbytes++;
84			}
85
86			putbytes(buf,n)
87			unsigned char *buf;
88			int n;
89			{
90	greg	2.2	if(!fwrite(buf,n,1,stdout)) {
91			fprintf(stderr,"%s: error on write\n", progname);
92	greg	1.1	exit(1);
93			}
94			outbytes+=n;
95			}
96
97			main(argc,argv)
98			int argc;
99			char **argv;
100			{
101			int xsize, ysize;
102			int i, picsize;
103			int ssizepos, lsizepos;
104	greg	2.5	#ifdef MSDOS
105			extern int _fmode;
106			_fmode = O_BINARY;
107			setmode(fileno(stdin), O_BINARY);
108			setmode(fileno(stdout), O_BINARY);
109			#endif
110	greg	2.2	progname = argv[0];
111	greg	1.1
112	greg	2.2	for (i = 1; i < argc ; i++)
113	greg	2.5	if (argv[i][0] == '-')
114	greg	2.2	switch (argv[i][1]) {
115			case 'g': gamma = atof(argv[++i]);
116			break;
117	greg	1.1
118	greg	2.2	case 'e': if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
119			usage();
120			else
121			bradj = atoi(argv[++i]);
122			break;
123
124			case 'v': ;
125			verbose = 1;
126			break;
127
128			case 'r': fprintf(stderr, "Sorry. Get a Macintosh :-)\n");
129			exit(1);
130
131			case '-': i++;
132			goto outofparse;
133			break; /* NOTREACHED */
134
135			otherwise: usage();
136			break;
137			}
138			else
139			break;
140
141			outofparse:
142
143			if (i < argc - 2)
144			usage();
145
146			if (i <= argc - 1 && freopen(argv[i], "r", stdin) == NULL) {
147			fprintf(stderr, "%s: can not open input \"%s\"\n",
148			progname, argv[i]);
149	greg	1.1	exit(1);
150			}
151
152	greg	2.2	if (i <= argc - 2 && freopen(argv[i+1], "w", stdout) == NULL) {
153			fprintf(stderr, "%s: can not open input \"%s\"\n",
154			progname, argv[i+1]);
155	greg	1.1	exit(1);
156			}
157	greg	2.2
158			#ifdef DEBUG
159			fprintf(stderr, "Input file: %s\n", i <= argc - 1 ? argv[i] : "stdin");
160	greg	2.5	fprintf(stderr, "Outut file: %s\n", i <= argc - 2 ? argv[i+1] : "stdout" );
161	greg	2.2	fprintf(stderr, "Gamma: %f\n", gamma);
162			fprintf(stderr, "Brightness adjust: %d\n", bradj);
163	greg	2.5	fprintf(stderr, "Verbose: %s\n", verbose ? "on" : "off");
164	greg	2.2	#endif
165	greg	1.1
166	greg	2.2
167	greg	2.5	/* OK. Now we read the size of the Radiance picture */
168	greg	2.2	if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
169	greg	2.5	fgetresolu(&xsize, &ysize, stdin) < 0 /* != (YMAJOR\|YDECR) */ ) {
170			fprintf(stderr, "%s: not a radiance picture\n", progname);
171			exit(1);
172	greg	2.2	}
173	greg	1.1
174	greg	2.2	/* Set the gamma correction */
175	greg	1.1
176	greg	2.2	setcolrgam(gamma);
177
178	greg	1.1	for(i=0; i<HEADER_SIZE; i++)
179			putbyte(0);
180	greg	2.2
181	greg	1.1	ssizepos = outbytes;
182	greg	2.5	putashort(0); /* low 16 bits of file size less HEADER_SIZE */
183	greg	1.1	putrect(0,0,xsize,ysize); /* bounding box of picture */
184			putashort(PICT_picVersion);
185			putashort(0x02ff); /* version 2 pict */
186			putashort(PICT_reservedHeader); /* reserved header opcode */
187
188			lsizepos = outbytes;
189	greg	2.5	putalong(0); /* full size of the file */
190			putfprect(0,0,xsize,ysize); /* fixed point bounding box of picture */
191			putalong(0); /* reserved */
192	greg	1.1
193	greg	2.5	putashort(PICT_clipRgn); /* the clip region */
194	greg	1.1	putashort(10);
195			putrect(0,0,xsize,ysize);
196
197	greg	2.2	if (verbose)
198			fprintf(stderr, "%s: The picture is %d by %d, with a gamma of %f\n",
199			progname, xsize, ysize, gamma);
200	greg	1.1
201	greg	2.2
202			putpict(xsize, ysize); /* Here is where all the work is done */
203
204	greg	1.1	putashort(PICT_EndOfPicture); /* end of pict */
205
206			picsize = outbytes-HEADER_SIZE;
207	greg	2.2	fseek(stdout,ssizepos,0);
208	greg	1.1	putashort(picsize&0xffff);
209	greg	2.2	fseek(stdout,lsizepos,0);
210	greg	1.1	putalong(picsize);
211
212	greg	2.2	fclose(stdout);
213			fclose(stdin);
214
215	greg	1.1	exit(0);
216	greg	2.2	return 0; /* lint fodder */
217	greg	1.1	}
218
219			putpict(xsize, ysize)
220			int xsize;
221			int ysize;
222			{
223	greg	2.2	int y;
224			int nbytes, rowbytes;
225			char cbuf, pbuf;
226	greg	1.1
227	greg	2.2	cbuf = malloc(4 * xsize);
228
229			if (cbuf == NULL) {
230			fprintf(stderr, "%s: not enough memory\n", progname);
231			exit(1);
232			}
233
234			pbuf = malloc(4 * xsize);
235
236			if (pbuf == NULL) {
237			fprintf(stderr, "%s: not enough memory\n", progname);
238			exit(1);
239			}
240
241	greg	1.1	putashort(PICT_Pack32BitsRect); /* 32 bit rgb */
242			rowbytes = 4*xsize;
243			putalong(0x000000ff); /* base address */
244
245	greg	2.2
246	greg	1.1	if(rowbytes&1)
247			rowbytes++;
248	greg	2.5	putashort(rowbytes\|0x8000); /* rowbytes */
249	greg	1.1	putrect(0,0,xsize,ysize); /* bounds */
250			putashort(0); /* version */
251
252			putashort(4); /* packtype */
253			putalong(0); /* packsize */
254			putalong(72<<16); /* hres */
255			putalong(72<<16); /* vres */
256
257			putashort(16); /* pixeltype */
258			putashort(32); /* pixelsize */
259			putashort(3); /* cmpcount */
260
261	greg	2.2
262	greg	1.1	putashort(8); /* cmpsize */
263			putalong(0); /* planebytes */
264			putalong(0); /* pmtable */
265			putalong(0); /* pmreserved */
266
267	greg	2.2
268	greg	1.1	putrect(0,0,xsize,ysize); /* scr rect */
269			putrect(0,0,xsize,ysize); /* dest rect */
270
271	greg	2.2
272	greg	1.1	putashort(0x40); /* transfer mode */
273	greg	2.2
274	greg	1.1	for(y=0; y<ysize; y++) {
275	greg	2.2	getrow(stdin, cbuf, xsize);
276	greg	1.1
277			nbytes = packbits(cbuf,pbuf,24*xsize);
278			if(rowbytes>250)
279			putashort(nbytes);
280			else
281			putbyte(nbytes);
282			putbytes(pbuf,nbytes);
283	greg	2.2	}
284	greg	1.1
285			if(outbytes&1)
286			putbyte(0);
287	greg	2.2
288			free(cbuf);
289			free(pbuf);
290	greg	1.1	}
291
292	greg	2.2	int getrow(in, cbuf, xsize)
293			FILE *in;
294			char *cbuf;
295			int xsize;
296	greg	1.1	{
297	greg	2.5	extern char tempbuffer(); / defined in color.c */
298	greg	2.2	COLR *scanin = NULL;
299	greg	1.1	int x;
300
301	greg	2.2	if ((scanin = (COLR )tempbuffer(xsizesizeof(COLR))) == NULL) {
302			fprintf(stderr, "%s: not enough memory\n", progname);
303			exit(1);
304	greg	1.1	}
305
306			if (freadcolrs(scanin, xsize, in) < 0) {
307	greg	2.5	fprintf(stderr, "%s: read error\n", progname);
308			exit(1);
309			}
310	greg	1.1
311	greg	2.2	if (bradj) /* Adjust exposure level */
312			shiftcolrs(scanin, xsize, bradj);
313
314
315			colrs_gambs(scanin, xsize); /* Gamma correct it */
316	greg	1.1
317			for (x = 0; x < xsize; x++) {
318	greg	2.2	cbuf[x] = scanin[x][RED];
319			cbuf[xsize + x] = scanin[x][GRN];
320			cbuf[2*xsize + x] = scanin[x][BLU];
321			}
322
323	greg	1.1	}
324
325	greg	2.2
326	greg	1.1	packbits(ibits,pbits,nbits)
327			unsigned char ibits, pbits;
328			int nbits;
329			{
330	greg	2.2	int bytes; /* UNUSED */
331	greg	1.1	unsigned char *sptr;
332			unsigned char *ibitsend;
333			unsigned char *optr = pbits;
334			int nbytes, todo, cc, count;
335
336			nbytes = ((nbits-1)/8)+1;
337			ibitsend = ibits+nbytes;
338	greg	2.2	while(ibits<ibitsend) {
339	greg	1.1	sptr = ibits;
340			ibits += 2;
341			while((ibits<ibitsend)&&((ibits[-2]!=ibits[-1])\|\|(ibits[-1]!=ibits[0])))
342			ibits++;
343	greg	2.5	if(ibits != ibitsend) {
344	greg	1.1	ibits -= 2;
345			}
346			count = ibits-sptr;
347			while(count) {
348			todo = count>127 ? 127:count;
349			count -= todo;
350			*optr++ = todo-1;
351			while(todo--)
352			optr++ = sptr++;
353			}
354			if(ibits == ibitsend)
355			break;
356			sptr = ibits;
357			cc = *ibits++;
358			while( (ibits<ibitsend) && (*ibits == cc) )
359			ibits++;
360			count = ibits-sptr;
361			while(count) {
362			todo = count>128 ? 128:count;
363			count -= todo;
364			*optr++ = 257-todo;
365			*optr++ = cc;
366			}
367			}
368			return optr-pbits;
369	greg	2.2	}
370
371			usage()
372			{
373			fprintf(stderr, "Usage: %s [-v] [-g gamma] [infile [outfile]]\n",
374			progname);
375			exit(2);
376	greg	1.1	}