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;

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(in, mybuff, xsize)
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:	1.2
Committed:	Wed Oct 23 09:33:11 1991 UTC (32 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.1:	+5 -3 lines
Log Message:	added ra_pict program
#	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			putrect(xorg,yorg,xsize,ysize)
22			int xorg, yorg, xsize, ysize;
23			{
24			putashort(yorg);
25			putashort(xorg);
26			putashort(ysize);
27			putashort(xsize);
28			}
29
30			putfprect(xorg,yorg,xsize,ysize)
31			int xorg, yorg, xsize, ysize;
32			{
33			putalong(yorg<<16);
34			putalong(xorg<<16);
35			putalong(ysize<<16);
36			putalong(xsize<<16);
37			}
38
39			putalong(l)
40			long l;
41			{
42			putbyte((l>>24)&0xff);
43			putbyte((l>>16)&0xff);
44			putbyte((l>>8)&0xff);
45			putbyte((l>>0)&0xff);
46			}
47
48			putashort(s)
49			short s;
50			{
51			putbyte((s>>8)&0xff);
52			putbyte((s>>0)&0xff);
53			}
54
55			putbyte(b)
56			unsigned char b;
57			{
58			char c[1];
59
60			c[0] = b;
61			if(!fwrite(c,1,1,outf)) {
62			fprintf(stderr,"%s: error on write\n", gargv[0]);
63			exit(1);
64			}
65			outbytes++;
66			}
67
68			putbytes(buf,n)
69			unsigned char *buf;
70			int n;
71			{
72			if(!fwrite(buf,n,1,outf)) {
73			fprintf(stderr,"topict: error on write\n");
74			exit(1);
75			}
76			outbytes+=n;
77			}
78
79			main(argc,argv)
80			int argc;
81			char **argv;
82			{
83			int xsize, ysize;
84			int i, picsize;
85			int ssizepos, lsizepos;
86
87			gargv = argv;
88
89			if( argc<3 ) {
90			fprintf(stderr, "Usage: %s inimage out.pict\n", gargv[0]);
91			exit(1);
92			}
93
94			if( (inf=fopen(gargv[1],"rb")) == NULL ) {
95			fprintf(stderr,"%s: can't open input file %s\n",gargv[0], gargv[1]);
96			exit(1);
97			}
98
99			if( (outf=fopen(gargv[2],"wb")) == NULL ) {
100			fprintf(stderr,"%s: can't open output file %s\n", gargv[0], gargv[1]);
101			exit(1);
102			}
103
104			if (checkheader(inf, COLRFMT, NULL) < 0 \|\|
105			fgetresolu(&xsize, &ysize, inf) != (YMAJOR\|YDECR)) {
106			fprintf(stderr, "%s: not a radiance picture\n", argv[1]);
107			exit(1);
108			}
109
110			setcolrgam(2.0);
111
112			for(i=0; i<HEADER_SIZE; i++)
113			putbyte(0);
114			ssizepos = outbytes;
115			putashort(0); /* low 16 bits of file size less HEADER_SIZE */
116			putrect(0,0,xsize,ysize); /* bounding box of picture */
117			putashort(PICT_picVersion);
118			putashort(0x02ff); /* version 2 pict */
119			putashort(PICT_reservedHeader); /* reserved header opcode */
120
121			lsizepos = outbytes;
122			putalong(0); /* full size of the file */
123			putfprect(0,0,xsize,ysize); /* fixed point bounding box of picture */
124			putalong(0); /* reserved */
125
126			putashort(PICT_clipRgn); /* the clip region */
127			putashort(10);
128			putrect(0,0,xsize,ysize);
129
130			putpict(xsize, ysize);
131
132			putashort(PICT_EndOfPicture); /* end of pict */
133
134			picsize = outbytes-HEADER_SIZE;
135			fseek(outf,ssizepos,0);
136			putashort(picsize&0xffff);
137			fseek(outf,lsizepos,0);
138			putalong(picsize);
139
140			fclose(outf);
141			exit(0);
142			}
143
144			putpict(xsize, ysize)
145			int xsize;
146			int ysize;
147			{
148			int y;
149			int nbytes, rowbytes;
150
151			putashort(PICT_Pack32BitsRect); /* 32 bit rgb */
152			rowbytes = 4*xsize;
153			putalong(0x000000ff); /* base address */
154
155			if(rowbytes&1)
156			rowbytes++;
157			putashort(rowbytes\|0x8000); /* rowbytes */
158			putrect(0,0,xsize,ysize); /* bounds */
159			putashort(0); /* version */
160
161			putashort(4); /* packtype */
162			putalong(0); /* packsize */
163			putalong(72<<16); /* hres */
164			putalong(72<<16); /* vres */
165
166			putashort(16); /* pixeltype */
167			putashort(32); /* pixelsize */
168			putashort(3); /* cmpcount */
169
170			putashort(8); /* cmpsize */
171			putalong(0); /* planebytes */
172			putalong(0); /* pmtable */
173			putalong(0); /* pmreserved */
174
175			putrect(0,0,xsize,ysize); /* scr rect */
176			putrect(0,0,xsize,ysize); /* dest rect */
177
178			putashort(0x40); /* transfer mode */
179			for(y=0; y<ysize; y++) {
180			getrow(inf, cbuf, xsize);
181
182			nbytes = packbits(cbuf,pbuf,24*xsize);
183			if(rowbytes>250)
184			putashort(nbytes);
185			else
186			putbyte(nbytes);
187			putbytes(pbuf,nbytes);
188			}
189
190			if(outbytes&1)
191			putbyte(0);
192			}
193
194	greg	1.2	int
195			getrow(in, mybuff, xsize)
196			FILE *in;
197			char *mybuff;
198			int xsize;
199	greg	1.1	{
200			COLOR color;
201			COLR scanin = (COLR) malloc(xsize * sizeof(COLR));
202			int x;
203
204			if (scanin == NULL) {
205			printf("scanin null");
206			}
207
208
209			if (freadcolrs(scanin, xsize, in) < 0) {
210			fprintf(stderr, " read error\n");
211			exit(1);
212			}
213
214			colrs_gambs(scanin, xsize);
215
216			for (x = 0; x < xsize; x++) {
217			colr_color(color, scanin[x]);
218			cbuf[xsize * 0 + x] = color[RED] * 255;
219			cbuf[xsize * 1 + x] = color[GRN] * 255;
220			cbuf[xsize * 2 + x] = color[BLU] * 255;
221			}
222			free(scanin);
223			}
224
225			packbits(ibits,pbits,nbits)
226			unsigned char ibits, pbits;
227			int nbits;
228			{
229			int bytes;
230			unsigned char *sptr;
231			unsigned char *ibitsend;
232			unsigned char *optr = pbits;
233			int nbytes, todo, cc, count;
234
235			nbytes = ((nbits-1)/8)+1;
236			ibitsend = ibits+nbytes;
237			while (ibits<ibitsend) {
238			sptr = ibits;
239			ibits += 2;
240			while((ibits<ibitsend)&&((ibits[-2]!=ibits[-1])\|\|(ibits[-1]!=ibits[0])))
241			ibits++;
242			if(ibits != ibitsend) {
243			ibits -= 2;
244			}
245			count = ibits-sptr;
246			while(count) {
247			todo = count>127 ? 127:count;
248			count -= todo;
249			*optr++ = todo-1;
250			while(todo--)
251			optr++ = sptr++;
252			}
253			if(ibits == ibitsend)
254			break;
255			sptr = ibits;
256			cc = *ibits++;
257			while( (ibits<ibitsend) && (*ibits == cc) )
258			ibits++;
259			count = ibits-sptr;
260			while(count) {
261			todo = count>128 ? 128:count;
262			count -= todo;
263			*optr++ = 257-todo;
264			*optr++ = cc;
265			}
266			}
267			return optr-pbits;
268			}