src/px/ra_pict.c

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

/*
 *      rad2pict - 
 *              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 <stdlib.h>

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

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;

    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:	2.2
Committed:	Thu Nov 21 11:34:10 1991 UTC (32 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.1:	+158 -63 lines
Log Message:	bug fixes from second version
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.2	static char SCCSid[] = "$SunId$ Auckuni";
3	greg	1.1	#endif
4	greg	1.4
5	greg	1.1	/*
6	greg	2.2	* rad2pict -
7			* Convert an Radiance image to APPLE pict format.
8			*
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	2.2	#include <stdlib.h>
24
25	greg	1.1	#include "pict.h"
26			#include "color.h"
27	greg	1.4	#include "resolu.h"
28	greg	1.3
29	greg	2.2	int outbytes; /* This had better be 32 bits! */
30			char *progname;
31			int verbose = 0;
32			float gamma = 2.0;
33			int bradj = 0;
34	greg	1.1
35	greg	2.2	/* First some utility routines */
36	greg	1.1
37			putrect(xorg,yorg,xsize,ysize)
38			int xorg, yorg, xsize, ysize;
39			{
40			putashort(yorg);
41			putashort(xorg);
42			putashort(ysize);
43			putashort(xsize);
44			}
45
46			putfprect(xorg,yorg,xsize,ysize)
47			int xorg, yorg, xsize, ysize;
48			{
49			putalong(yorg<<16);
50			putalong(xorg<<16);
51			putalong(ysize<<16);
52			putalong(xsize<<16);
53			}
54
55			putalong(l)
56			long l;
57			{
58			putbyte((l>>24)&0xff);
59			putbyte((l>>16)&0xff);
60			putbyte((l>>8)&0xff);
61			putbyte((l>>0)&0xff);
62			}
63
64			putashort(s)
65			short s;
66			{
67			putbyte((s>>8)&0xff);
68			putbyte((s>>0)&0xff);
69			}
70
71			putbyte(b)
72	greg	2.2	int b;
73	greg	1.1	{
74	greg	2.2	if (putc(b,stdout) == EOF && ferror(stdout)) {
75			fprintf(stderr,"%s: error on write\n", progname);
76	greg	1.1	exit(1);
77			}
78			outbytes++;
79			}
80
81			putbytes(buf,n)
82			unsigned char *buf;
83			int n;
84			{
85	greg	2.2	if(!fwrite(buf,n,1,stdout)) {
86			fprintf(stderr,"%s: error on write\n", progname);
87	greg	1.1	exit(1);
88			}
89			outbytes+=n;
90			}
91
92			main(argc,argv)
93			int argc;
94			char **argv;
95			{
96			int xsize, ysize;
97			int i, picsize;
98			int ssizepos, lsizepos;
99
100	greg	2.2	progname = argv[0];
101	greg	1.1
102	greg	2.2	for (i = 1; i < argc ; i++)
103			if (argv[i][0] == '-')
104			switch (argv[i][1]) {
105			case 'g': gamma = atof(argv[++i]);
106			break;
107	greg	1.1
108	greg	2.2	case 'e': if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
109			usage();
110			else
111			bradj = atoi(argv[++i]);
112			break;
113
114			case 'v': ;
115			verbose = 1;
116			break;
117
118			case 'r': fprintf(stderr, "Sorry. Get a Macintosh :-)\n");
119			exit(1);
120
121			case '-': i++;
122			goto outofparse;
123			break; /* NOTREACHED */
124
125			otherwise: usage();
126			break;
127			}
128			else
129			break;
130
131			outofparse:
132
133			if (i < argc - 2)
134			usage();
135
136			if (i <= argc - 1 && freopen(argv[i], "r", stdin) == NULL) {
137			fprintf(stderr, "%s: can not open input \"%s\"\n",
138			progname, argv[i]);
139	greg	1.1	exit(1);
140			}
141
142	greg	2.2	if (i <= argc - 2 && freopen(argv[i+1], "w", stdout) == NULL) {
143			fprintf(stderr, "%s: can not open input \"%s\"\n",
144			progname, argv[i+1]);
145	greg	1.1	exit(1);
146			}
147	greg	2.2
148			#ifdef DEBUG
149			fprintf(stderr, "Input file: %s\n", i <= argc - 1 ? argv[i] : "stdin");
150			fprintf(stderr, "Outut file: %s\n", i <= argc - 2 ? argv[i+1] : "stdout" );
151			fprintf(stderr, "Gamma: %f\n", gamma);
152			fprintf(stderr, "Brightness adjust: %d\n", bradj);
153			fprintf(stderr, "Verbose: %s\n", verbose ? "on" : "off");
154			#endif
155	greg	1.1
156	greg	2.2
157			/* OK. Now we read the size of the Radiance picture */
158			if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
159			fgetresolu(&xsize, &ysize, stdin) < 0 /* != (YMAJOR\|YDECR) */ ) {
160			fprintf(stderr, "%s: not a radiance picture\n", progname);
161	greg	1.1	exit(1);
162	greg	2.2	}
163	greg	1.1
164	greg	2.2	/* Set the gamma correction */
165	greg	1.1
166	greg	2.2	setcolrgam(gamma);
167
168	greg	1.1	for(i=0; i<HEADER_SIZE; i++)
169			putbyte(0);
170	greg	2.2
171	greg	1.1	ssizepos = outbytes;
172			putashort(0); /* low 16 bits of file size less HEADER_SIZE */
173			putrect(0,0,xsize,ysize); /* bounding box of picture */
174			putashort(PICT_picVersion);
175			putashort(0x02ff); /* version 2 pict */
176			putashort(PICT_reservedHeader); /* reserved header opcode */
177
178			lsizepos = outbytes;
179			putalong(0); /* full size of the file */
180			putfprect(0,0,xsize,ysize); /* fixed point bounding box of picture */
181			putalong(0); /* reserved */
182
183			putashort(PICT_clipRgn); /* the clip region */
184			putashort(10);
185			putrect(0,0,xsize,ysize);
186
187	greg	2.2	if (verbose)
188			fprintf(stderr, "%s: The picture is %d by %d, with a gamma of %f\n",
189			progname, xsize, ysize, gamma);
190	greg	1.1
191	greg	2.2
192			putpict(xsize, ysize); /* Here is where all the work is done */
193
194	greg	1.1	putashort(PICT_EndOfPicture); /* end of pict */
195
196			picsize = outbytes-HEADER_SIZE;
197	greg	2.2	fseek(stdout,ssizepos,0);
198	greg	1.1	putashort(picsize&0xffff);
199	greg	2.2	fseek(stdout,lsizepos,0);
200	greg	1.1	putalong(picsize);
201
202	greg	2.2	fclose(stdout);
203			fclose(stdin);
204
205	greg	1.1	exit(0);
206	greg	2.2	return 0; /* lint fodder */
207	greg	1.1	}
208
209			putpict(xsize, ysize)
210			int xsize;
211			int ysize;
212			{
213	greg	2.2	int y;
214			int nbytes, rowbytes;
215			char cbuf, pbuf;
216	greg	1.1
217	greg	2.2	cbuf = malloc(4 * xsize);
218
219			if (cbuf == NULL) {
220			fprintf(stderr, "%s: not enough memory\n", progname);
221			exit(1);
222			}
223
224			pbuf = malloc(4 * xsize);
225
226			if (pbuf == NULL) {
227			fprintf(stderr, "%s: not enough memory\n", progname);
228			exit(1);
229			}
230
231	greg	1.1	putashort(PICT_Pack32BitsRect); /* 32 bit rgb */
232			rowbytes = 4*xsize;
233			putalong(0x000000ff); /* base address */
234
235	greg	2.2
236	greg	1.1	if(rowbytes&1)
237			rowbytes++;
238			putashort(rowbytes\|0x8000); /* rowbytes */
239			putrect(0,0,xsize,ysize); /* bounds */
240			putashort(0); /* version */
241
242			putashort(4); /* packtype */
243			putalong(0); /* packsize */
244			putalong(72<<16); /* hres */
245			putalong(72<<16); /* vres */
246
247			putashort(16); /* pixeltype */
248			putashort(32); /* pixelsize */
249			putashort(3); /* cmpcount */
250
251	greg	2.2
252	greg	1.1	putashort(8); /* cmpsize */
253			putalong(0); /* planebytes */
254			putalong(0); /* pmtable */
255			putalong(0); /* pmreserved */
256
257	greg	2.2
258	greg	1.1	putrect(0,0,xsize,ysize); /* scr rect */
259			putrect(0,0,xsize,ysize); /* dest rect */
260
261	greg	2.2
262	greg	1.1	putashort(0x40); /* transfer mode */
263	greg	2.2
264	greg	1.1	for(y=0; y<ysize; y++) {
265	greg	2.2	getrow(stdin, cbuf, xsize);
266	greg	1.1
267			nbytes = packbits(cbuf,pbuf,24*xsize);
268			if(rowbytes>250)
269			putashort(nbytes);
270			else
271			putbyte(nbytes);
272			putbytes(pbuf,nbytes);
273	greg	2.2	}
274	greg	1.1
275			if(outbytes&1)
276			putbyte(0);
277	greg	2.2
278			free(cbuf);
279			free(pbuf);
280	greg	1.1	}
281
282	greg	2.2	int getrow(in, cbuf, xsize)
283			FILE *in;
284			char *cbuf;
285			int xsize;
286	greg	1.1	{
287	greg	2.2	extern char tempbuffer(); / defined in color.c */
288			COLR *scanin = NULL;
289	greg	1.1	int x;
290
291	greg	2.2	if ((scanin = (COLR )tempbuffer(xsizesizeof(COLR))) == NULL) {
292			fprintf(stderr, "%s: not enough memory\n", progname);
293			exit(1);
294	greg	1.1	}
295
296			if (freadcolrs(scanin, xsize, in) < 0) {
297	greg	2.2	fprintf(stderr, "%s: read error\n", progname);
298	greg	1.1	exit(1);
299	greg	2.2	}
300	greg	1.1
301	greg	2.2	if (bradj) /* Adjust exposure level */
302			shiftcolrs(scanin, xsize, bradj);
303
304
305			colrs_gambs(scanin, xsize); /* Gamma correct it */
306	greg	1.1
307			for (x = 0; x < xsize; x++) {
308	greg	2.2	cbuf[x] = scanin[x][RED];
309			cbuf[xsize + x] = scanin[x][GRN];
310			cbuf[2*xsize + x] = scanin[x][BLU];
311			}
312
313	greg	1.1	}
314
315	greg	2.2
316	greg	1.1	packbits(ibits,pbits,nbits)
317			unsigned char ibits, pbits;
318			int nbits;
319			{
320	greg	2.2	int bytes; /* UNUSED */
321	greg	1.1	unsigned char *sptr;
322			unsigned char *ibitsend;
323			unsigned char *optr = pbits;
324			int nbytes, todo, cc, count;
325
326			nbytes = ((nbits-1)/8)+1;
327			ibitsend = ibits+nbytes;
328	greg	2.2	while(ibits<ibitsend) {
329	greg	1.1	sptr = ibits;
330			ibits += 2;
331			while((ibits<ibitsend)&&((ibits[-2]!=ibits[-1])\|\|(ibits[-1]!=ibits[0])))
332			ibits++;
333			if(ibits != ibitsend) {
334			ibits -= 2;
335			}
336			count = ibits-sptr;
337			while(count) {
338			todo = count>127 ? 127:count;
339			count -= todo;
340			*optr++ = todo-1;
341			while(todo--)
342			optr++ = sptr++;
343			}
344			if(ibits == ibitsend)
345			break;
346			sptr = ibits;
347			cc = *ibits++;
348			while( (ibits<ibitsend) && (*ibits == cc) )
349			ibits++;
350			count = ibits-sptr;
351			while(count) {
352			todo = count>128 ? 128:count;
353			count -= todo;
354			*optr++ = 257-todo;
355			*optr++ = cc;
356			}
357			}
358			return optr-pbits;
359	greg	2.2	}
360
361			usage()
362			{
363			fprintf(stderr, "Usage: %s [-v] [-g gamma] [infile [outfile]]\n",
364			progname);
365			exit(2);
366	greg	1.1	}