src/px/ra_pict.c

#ifndef lint
static char SCCSid[] = "$SunId$ AU";
#endif
/*
    rad2pict - Convert an Radiance image to APPLE pict format.
        
    School of Architecture, Auckland University, Private Bag
    Auckland, New Zealand
*/
#include <stdio.h>
#include <stdlib.h>
#include "pict.h"
#include "color.h"

char cbuf[8192*5]; 
char pbuf[8192]; 
int outbytes;
FILE *outf, *inf;
char **gargv;

putpic(int, int);

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)
unsigned char b;
{
    char c[1];

    c[0] = b;
    if(!fwrite(c,1,1,outf)) {
        fprintf(stderr,"%s: error on write\n", gargv[0]);
        exit(1);
    }
    outbytes++;
}

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

main(argc,argv)
int argc;
char **argv;
{
    int xsize, ysize;
    int i, picsize;
    int ssizepos, lsizepos;

    gargv = argv;

    if( argc<3 ) {
        fprintf(stderr, "Usage: %s inimage out.pict\n", gargv[0]);
        exit(1);
    } 

    if( (inf=fopen(gargv[1],"rb")) == NULL ) {
        fprintf(stderr,"%s: can't open input file %s\n",gargv[0], gargv[1]);
        exit(1);
    }

    if( (outf=fopen(gargv[2],"wb")) == NULL ) {
        fprintf(stderr,"%s: can't open output file %s\n", gargv[0], gargv[1]);
        exit(1);
    }

    if (checkheader(inf, COLRFMT, NULL) < 0 ||
            fgetresolu(&xsize, &ysize, inf) != (YMAJOR|YDECR)) {
        fprintf(stderr, "%s: not a radiance picture\n", argv[1]);
        exit(1);
    }

    setcolrgam(2.0);

    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);

    putpict(xsize, ysize);

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

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

    fclose(outf);
    exit(0);
}

putpict(xsize, ysize)
int xsize;
int ysize;
{
    int y;
    int nbytes, rowbytes;

    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(inf, cbuf, xsize);

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

    if(outbytes&1) 
        putbyte(0);
}

int getrow(FILE *in, char *mybuff, int xsize)
{
    COLOR    color;
    COLR    *scanin = (COLR*) malloc(xsize * sizeof(COLR));
    int     x;

    if (scanin == NULL) {
        printf("scanin null");
    }


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

    colrs_gambs(scanin, xsize);
    
    for (x = 0; x < xsize; x++) {
        colr_color(color, scanin[x]);
        cbuf[xsize * 0 + x] = color[RED] * 255;
        cbuf[xsize * 1 + x] = color[GRN] * 255;
        cbuf[xsize * 2 + x] = color[BLU] * 255;
    }
    free(scanin);
}

packbits(ibits,pbits,nbits)
unsigned char *ibits, *pbits;
int nbits;
{
    int bytes;
    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;
}
Revision:	1.1
Committed:	Wed Oct 23 09:26:35 1991 UTC (32 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Log Message:	Initial revision
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2			static char SCCSid[] = "$SunId$ AU";
3			#endif
4			/*
5			rad2pict - Convert an Radiance image to APPLE pict format.
6
7			School of Architecture, Auckland University, Private Bag
8			Auckland, New Zealand
9			*/
10			#include <stdio.h>
11			#include <stdlib.h>
12			#include "pict.h"
13			#include "color.h"
14
15			char cbuf[8192*5];
16			char pbuf[8192];
17			int outbytes;
18			FILE outf, inf;
19			char **gargv;
20
21			putpic(int, int);
22
23			putrect(xorg,yorg,xsize,ysize)
24			int xorg, yorg, xsize, ysize;
25			{
26			putashort(yorg);
27			putashort(xorg);
28			putashort(ysize);
29			putashort(xsize);
30			}
31
32			putfprect(xorg,yorg,xsize,ysize)
33			int xorg, yorg, xsize, ysize;
34			{
35			putalong(yorg<<16);
36			putalong(xorg<<16);
37			putalong(ysize<<16);
38			putalong(xsize<<16);
39			}
40
41			putalong(l)
42			long l;
43			{
44			putbyte((l>>24)&0xff);
45			putbyte((l>>16)&0xff);
46			putbyte((l>>8)&0xff);
47			putbyte((l>>0)&0xff);
48			}
49
50			putashort(s)
51			short s;
52			{
53			putbyte((s>>8)&0xff);
54			putbyte((s>>0)&0xff);
55			}
56
57			putbyte(b)
58			unsigned char b;
59			{
60			char c[1];
61
62			c[0] = b;
63			if(!fwrite(c,1,1,outf)) {
64			fprintf(stderr,"%s: error on write\n", gargv[0]);
65			exit(1);
66			}
67			outbytes++;
68			}
69
70			putbytes(buf,n)
71			unsigned char *buf;
72			int n;
73			{
74			if(!fwrite(buf,n,1,outf)) {
75			fprintf(stderr,"topict: error on write\n");
76			exit(1);
77			}
78			outbytes+=n;
79			}
80
81			main(argc,argv)
82			int argc;
83			char **argv;
84			{
85			int xsize, ysize;
86			int i, picsize;
87			int ssizepos, lsizepos;
88
89			gargv = argv;
90
91			if( argc<3 ) {
92			fprintf(stderr, "Usage: %s inimage out.pict\n", gargv[0]);
93			exit(1);
94			}
95
96			if( (inf=fopen(gargv[1],"rb")) == NULL ) {
97			fprintf(stderr,"%s: can't open input file %s\n",gargv[0], gargv[1]);
98			exit(1);
99			}
100
101			if( (outf=fopen(gargv[2],"wb")) == NULL ) {
102			fprintf(stderr,"%s: can't open output file %s\n", gargv[0], gargv[1]);
103			exit(1);
104			}
105
106			if (checkheader(inf, COLRFMT, NULL) < 0 \|\|
107			fgetresolu(&xsize, &ysize, inf) != (YMAJOR\|YDECR)) {
108			fprintf(stderr, "%s: not a radiance picture\n", argv[1]);
109			exit(1);
110			}
111
112			setcolrgam(2.0);
113
114			for(i=0; i<HEADER_SIZE; i++)
115			putbyte(0);
116			ssizepos = outbytes;
117			putashort(0); /* low 16 bits of file size less HEADER_SIZE */
118			putrect(0,0,xsize,ysize); /* bounding box of picture */
119			putashort(PICT_picVersion);
120			putashort(0x02ff); /* version 2 pict */
121			putashort(PICT_reservedHeader); /* reserved header opcode */
122
123			lsizepos = outbytes;
124			putalong(0); /* full size of the file */
125			putfprect(0,0,xsize,ysize); /* fixed point bounding box of picture */
126			putalong(0); /* reserved */
127
128			putashort(PICT_clipRgn); /* the clip region */
129			putashort(10);
130			putrect(0,0,xsize,ysize);
131
132			putpict(xsize, ysize);
133
134			putashort(PICT_EndOfPicture); /* end of pict */
135
136			picsize = outbytes-HEADER_SIZE;
137			fseek(outf,ssizepos,0);
138			putashort(picsize&0xffff);
139			fseek(outf,lsizepos,0);
140			putalong(picsize);
141
142			fclose(outf);
143			exit(0);
144			}
145
146			putpict(xsize, ysize)
147			int xsize;
148			int ysize;
149			{
150			int y;
151			int nbytes, rowbytes;
152
153			putashort(PICT_Pack32BitsRect); /* 32 bit rgb */
154			rowbytes = 4*xsize;
155			putalong(0x000000ff); /* base address */
156
157			if(rowbytes&1)
158			rowbytes++;
159			putashort(rowbytes\|0x8000); /* rowbytes */
160			putrect(0,0,xsize,ysize); /* bounds */
161			putashort(0); /* version */
162
163			putashort(4); /* packtype */
164			putalong(0); /* packsize */
165			putalong(72<<16); /* hres */
166			putalong(72<<16); /* vres */
167
168			putashort(16); /* pixeltype */
169			putashort(32); /* pixelsize */
170			putashort(3); /* cmpcount */
171
172			putashort(8); /* cmpsize */
173			putalong(0); /* planebytes */
174			putalong(0); /* pmtable */
175			putalong(0); /* pmreserved */
176
177			putrect(0,0,xsize,ysize); /* scr rect */
178			putrect(0,0,xsize,ysize); /* dest rect */
179
180			putashort(0x40); /* transfer mode */
181			for(y=0; y<ysize; y++) {
182			getrow(inf, cbuf, xsize);
183
184			nbytes = packbits(cbuf,pbuf,24*xsize);
185			if(rowbytes>250)
186			putashort(nbytes);
187			else
188			putbyte(nbytes);
189			putbytes(pbuf,nbytes);
190			}
191
192			if(outbytes&1)
193			putbyte(0);
194			}
195
196			int getrow(FILE in, char mybuff, int xsize)
197			{
198			COLOR color;
199			COLR scanin = (COLR) malloc(xsize * sizeof(COLR));
200			int x;
201
202			if (scanin == NULL) {
203			printf("scanin null");
204			}
205
206
207			if (freadcolrs(scanin, xsize, in) < 0) {
208			fprintf(stderr, " read error\n");
209			exit(1);
210			}
211
212			colrs_gambs(scanin, xsize);
213
214			for (x = 0; x < xsize; x++) {
215			colr_color(color, scanin[x]);
216			cbuf[xsize * 0 + x] = color[RED] * 255;
217			cbuf[xsize * 1 + x] = color[GRN] * 255;
218			cbuf[xsize * 2 + x] = color[BLU] * 255;
219			}
220			free(scanin);
221			}
222
223			packbits(ibits,pbits,nbits)
224			unsigned char ibits, pbits;
225			int nbits;
226			{
227			int bytes;
228			unsigned char *sptr;
229			unsigned char *ibitsend;
230			unsigned char *optr = pbits;
231			int nbytes, todo, cc, count;
232
233			nbytes = ((nbits-1)/8)+1;
234			ibitsend = ibits+nbytes;
235			while (ibits<ibitsend) {
236			sptr = ibits;
237			ibits += 2;
238			while((ibits<ibitsend)&&((ibits[-2]!=ibits[-1])\|\|(ibits[-1]!=ibits[0])))
239			ibits++;
240			if(ibits != ibitsend) {
241			ibits -= 2;
242			}
243			count = ibits-sptr;
244			while(count) {
245			todo = count>127 ? 127:count;
246			count -= todo;
247			*optr++ = todo-1;
248			while(todo--)
249			optr++ = sptr++;
250			}
251			if(ibits == ibitsend)
252			break;
253			sptr = ibits;
254			cc = *ibits++;
255			while( (ibits<ibitsend) && (*ibits == cc) )
256			ibits++;
257			count = ibits-sptr;
258			while(count) {
259			todo = count>128 ? 128:count;
260			count -= todo;
261			*optr++ = 257-todo;
262			*optr++ = cc;
263			}
264			}
265			return optr-pbits;
266			}