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
#	Content
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	}