src/px/ra_pixar.c

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

/* Copyright 1989 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "@(#)ra_pixar.c 1.2 9/12/89 LBL";
#endif

/* ra_pixar.c */
/*
 * convert from RADIANCE image file to PIXAR image file.  (or vice versa)
 *
 *      David G. Jones  July 1989
 */
/* External functions called:
 *
 * header.c:
 *      getheader(fp,func);
 *      printargs(argc,argv,fp);
 * color.c:
 *      freadscan(scanline,len,fp);
 *      fwritescan(scanline,len,fp);
 */

#include <stdio.h>
#include <math.h>

/* PIXAR */
#include <picio.h>
#include <pixeldef.h>
#include <chad.h>

/* RADIANCE (color.h conflicts with PIXAR includes) ugh!! */
#ifdef undef
#include "color.h"
#else
#define                 XDECR                   1
#define                 YDECR                   2
#define                 YMAJOR                  4

#define                 RED                     0
#define                 GRN                     1
#define                 BLU                     2
#define                 EXP                     3
#define                 colval(col,pri)         ((col)[pri])
#define                 setcolor(col,r,g,b)     \
        ((col)[RED]=(r),(col)[GRN]=(g),(col)[BLU]=(b))
typedef float  COLOR[3];        /* red, green, blue */
#endif


char                    *ProgramName;
int                     global_argc;
char                    **global_argv;

/* RADIANCE global variables */
FILE                    *radiance_fp            = NULL;
double                  radiance_pixel();

usage()
{
   fprintf(stderr,"usage:  %s radiance.pic pixar.pix\n",ProgramName);
   fprintf(stderr,"  or    %s -r pixar.pix radiance.pic\n",ProgramName);
   exit(1);
}


main(argc,argv)
int                     argc;
char                    *argv[];
{
   char                 *infile;
   char                 *outfile;
   int                  i;
   int                  reverse                 = 0;

   ProgramName=argv[0];
   if (argc < 3)
      usage();
   infile=argv[argc-2];
   outfile=argv[argc-1];
   for (i=1; i < argc-2 ; ++i)
      if (!strcmp(argv[i],"-r"))
         reverse=1;
      else
         usage();

   if (reverse)
   {
      global_argc=argc;
      global_argv=argv;
      pix_ra(infile,outfile);
   }
   else
      ra_pix(infile,outfile);
}

ra_pix(infile,outfile)
char                    *infile;
char                    *outfile;
{
/* PIXAR variables */
   RGBAPixelType        *pixar_scanline;
   PFILE                *out;
/* RADIANCE variables */
   COLOR                *radiance_scanline;
/* regular variables */
   int                  width;
   int                  height;
   register int         x;
   register int         y;

/* get width, height from radiance file */
   radiance_getsize(infile,&width,&height);
   radiance_scanline=(COLOR *)malloc(width*sizeof(COLOR));
   pixar_scanline=(RGBAPixelType *)malloc(width*sizeof(RGBAPixelType));
   if (!radiance_scanline || !pixar_scanline)
   {
      fprintf(stderr,"not enough memory?\n");
      perror("malloc");
      exit(1);
   }
   bzero(pixar_scanline,width*sizeof(RGBAPixelType));

   PicSetForce(1);
   PicSetPsize(width,height);
   PicSetTsize(width,height);
   PicSetPformat(PF_RGB);
   PicSetPstorage(PS_12DUMP);
   PicSetPmatting(PM_NONE);
   PicSetOffset(0,0);
   PicSetLabel("converted from RADIANCE format by ra_pixar");
   if (!(out=PicCreat(outfile,0666)))
   {
      fprintf(stderr,"can't open PIXAR image file `%s'\n",outfile);
      perror("open");
      exit(1);
   }

   picPreEncodeScanline(out,0);
   for (y=0; y < height ; ++y)
   {
      radiance_readscanline(radiance_scanline,width);
      for (x=0; x < width ; ++x)
      {
         SetRGBColor(&pixar_scanline[x],
            DBL2PXL(radiance_pixel(radiance_scanline[x],RED)),
            DBL2PXL(radiance_pixel(radiance_scanline[x],GRN)),
            DBL2PXL(radiance_pixel(radiance_scanline[x],BLU)));
      }
      picEncodeScanline(out,pixar_scanline);
   }
   picPostEncodeScanline(out);
   fclose(radiance_fp);
   PicClose(out);
}


radiance_getsize(filename,w,h)
char            *filename;
int             *w;
int             *h;
{
   if (!(radiance_fp=fopen(filename,"r")))
   {
      fprintf(stderr,"can't open RADIANCE image file `%s'\n",filename);
      perror("open");
      exit(1);
   }
   getheader(radiance_fp,NULL);
   if (fgetresolu(w, h, radiance_fp) != (YMAJOR|YDECR))
   {
      fprintf(stderr,"bad RADIANCE format\n");
      exit(1);
   }
}


radiance_readscanline(buf,x)
COLOR                   *buf;
int                     x;
{
   if (freadscan(buf,x,radiance_fp) < 0)
   {
      fprintf(stderr,"read error?\n");
      perror("fread");
      exit(1);
   }
}


double radiance_pixel(pixel,i)
COLOR                   pixel;
int                     i;
{
   double               value;

   value=colval(pixel,i);
   if (value < 0.0)
      return 0.0;
   else if (value> 1.0)
      return 1.0;
   return value;
}

pix_ra(infile,outfile)
char                    *infile;
char                    *outfile;
{
/* PIXAR variables */
   RGBAPixelType        *pixar_scanline;
   PFILE                *in;
/* RADIANCE variables */
   COLOR                *radiance_scanline;
   FILE                 *out;
/* regular variables */
   int                  width;
   int                  height;
   register int         x;
   register int         y;

   if (!(in=PicOpen(infile,"r")))
   {
      fprintf(stderr,"can't open PIXAR image file `%s'\n",infile);
      perror("open");
      exit(1);
   }
   if (!(out=fopen(outfile,"w")))
   {
      fprintf(stderr,"can't open RADIANCE image file `%s'\n",outfile);
      perror("open");
      exit(1);
   }

/* get width, height from PIXAR file */
   width=in->Pwidth;
   height=in->Pheight;

/* allocate scan line space */
   radiance_scanline=(COLOR *)malloc(width*sizeof(COLOR));
   pixar_scanline=(RGBAPixelType *)malloc(width*sizeof(RGBAPixelType));
   if (!radiance_scanline || !pixar_scanline)
   {
      fprintf(stderr,"not enough memory?\n");
      perror("malloc");
      exit(1);
   }

/* write out the RADIANCE header */
   radiance_writeheader(out,width,height);

   picPreDecodeScanline(in,0);
   for (y=0; y < height ; ++y)
   {
      picDecodeScanline(in,pixar_scanline);
      for (x=0; x < width ; ++x)
      {
         setcolor(radiance_scanline[x],
            PXL2DBL(pixar_scanline[x].Red),
            PXL2DBL(pixar_scanline[x].Green),
            PXL2DBL(pixar_scanline[x].Blue));
      }
      radiance_writescanline(out,radiance_scanline,width);
   }
   picPostDecodeScanline(in);
   PicClose(in);
   fclose(out);
}


radiance_writeheader(fp,x,y)
FILE            *fp;
int             x;
int             y;
{
   printargs(global_argc,global_argv,fp);
   fputc('\n',fp);
   fputresolu(YMAJOR|YDECR, x, y, fp);
   fflush(fp);
}


radiance_writescanline(fp,buf,x)
FILE                    *fp;
COLOR                   *buf;
int                     x;
{
   if (fwritescan(buf,x,fp) < 0)
   {
      fprintf(stderr,"write error?\n");
      perror("fwrite");
      exit(1);
   }
}
Revision:	1.3
Committed:	Tue Jan 16 09:11:40 1990 UTC (34 years, 3 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+9 -1 lines
Log Message:	incorporated header read/write routines
#	Content
1	#ifndef lint
2	static char SCCSid[] = "$SunId$ LBL";
3	#endif
4
5	/* Copyright 1989 Regents of the University of California */
6
7	#ifndef lint
8	static char SCCSid[] = "@(#)ra_pixar.c 1.2 9/12/89 LBL";
9	#endif
10
11	/* ra_pixar.c */
12	/*
13	* convert from RADIANCE image file to PIXAR image file. (or vice versa)
14	*
15	* David G. Jones July 1989
16	*/
17	/* External functions called:
18	*
19	* header.c:
20	* getheader(fp,func);
21	* printargs(argc,argv,fp);
22	* color.c:
23	* freadscan(scanline,len,fp);
24	* fwritescan(scanline,len,fp);
25	*/
26
27	#include <stdio.h>
28	#include <math.h>
29
30	/* PIXAR */
31	#include <picio.h>
32	#include <pixeldef.h>
33	#include <chad.h>
34
35	/* RADIANCE (color.h conflicts with PIXAR includes) ugh!! */
36	#ifdef undef
37	#include "color.h"
38	#else
39	#define XDECR 1
40	#define YDECR 2
41	#define YMAJOR 4
42
43	#define RED 0
44	#define GRN 1
45	#define BLU 2
46	#define EXP 3
47	#define colval(col,pri) ((col)[pri])
48	#define setcolor(col,r,g,b) \
49	((col)[RED]=(r),(col)[GRN]=(g),(col)[BLU]=(b))
50	typedef float COLOR[3]; /* red, green, blue */
51	#endif
52
53
54	char *ProgramName;
55	int global_argc;
56	char **global_argv;
57
58	/* RADIANCE global variables */
59	FILE *radiance_fp = NULL;
60	double radiance_pixel();
61
62	usage()
63	{
64	fprintf(stderr,"usage: %s radiance.pic pixar.pix\n",ProgramName);
65	fprintf(stderr," or %s -r pixar.pix radiance.pic\n",ProgramName);
66	exit(1);
67	}
68
69
70	main(argc,argv)
71	int argc;
72	char *argv[];
73	{
74	char *infile;
75	char *outfile;
76	int i;
77	int reverse = 0;
78
79	ProgramName=argv[0];
80	if (argc < 3)
81	usage();
82	infile=argv[argc-2];
83	outfile=argv[argc-1];
84	for (i=1; i < argc-2 ; ++i)
85	if (!strcmp(argv[i],"-r"))
86	reverse=1;
87	else
88	usage();
89
90	if (reverse)
91	{
92	global_argc=argc;
93	global_argv=argv;
94	pix_ra(infile,outfile);
95	}
96	else
97	ra_pix(infile,outfile);
98	}
99
100	ra_pix(infile,outfile)
101	char *infile;
102	char *outfile;
103	{
104	/* PIXAR variables */
105	RGBAPixelType *pixar_scanline;
106	PFILE *out;
107	/* RADIANCE variables */
108	COLOR *radiance_scanline;
109	/* regular variables */
110	int width;
111	int height;
112	register int x;
113	register int y;
114
115	/* get width, height from radiance file */
116	radiance_getsize(infile,&width,&height);
117	radiance_scanline=(COLOR )malloc(widthsizeof(COLOR));
118	pixar_scanline=(RGBAPixelType )malloc(widthsizeof(RGBAPixelType));
119	if (!radiance_scanline \|\| !pixar_scanline)
120	{
121	fprintf(stderr,"not enough memory?\n");
122	perror("malloc");
123	exit(1);
124	}
125	bzero(pixar_scanline,width*sizeof(RGBAPixelType));
126
127	PicSetForce(1);
128	PicSetPsize(width,height);
129	PicSetTsize(width,height);
130	PicSetPformat(PF_RGB);
131	PicSetPstorage(PS_12DUMP);
132	PicSetPmatting(PM_NONE);
133	PicSetOffset(0,0);
134	PicSetLabel("converted from RADIANCE format by ra_pixar");
135	if (!(out=PicCreat(outfile,0666)))
136	{
137	fprintf(stderr,"can't open PIXAR image file `%s'\n",outfile);
138	perror("open");
139	exit(1);
140	}
141
142	picPreEncodeScanline(out,0);
143	for (y=0; y < height ; ++y)
144	{
145	radiance_readscanline(radiance_scanline,width);
146	for (x=0; x < width ; ++x)
147	{
148	SetRGBColor(&pixar_scanline[x],
149	DBL2PXL(radiance_pixel(radiance_scanline[x],RED)),
150	DBL2PXL(radiance_pixel(radiance_scanline[x],GRN)),
151	DBL2PXL(radiance_pixel(radiance_scanline[x],BLU)));
152	}
153	picEncodeScanline(out,pixar_scanline);
154	}
155	picPostEncodeScanline(out);
156	fclose(radiance_fp);
157	PicClose(out);
158	}
159
160
161	radiance_getsize(filename,w,h)
162	char *filename;
163	int *w;
164	int *h;
165	{
166	if (!(radiance_fp=fopen(filename,"r")))
167	{
168	fprintf(stderr,"can't open RADIANCE image file `%s'\n",filename);
169	perror("open");
170	exit(1);
171	}
172	getheader(radiance_fp,NULL);
173	if (fgetresolu(w, h, radiance_fp) != (YMAJOR\|YDECR))
174	{
175	fprintf(stderr,"bad RADIANCE format\n");
176	exit(1);
177	}
178	}
179
180
181	radiance_readscanline(buf,x)
182	COLOR *buf;
183	int x;
184	{
185	if (freadscan(buf,x,radiance_fp) < 0)
186	{
187	fprintf(stderr,"read error?\n");
188	perror("fread");
189	exit(1);
190	}
191	}
192
193
194	double radiance_pixel(pixel,i)
195	COLOR pixel;
196	int i;
197	{
198	double value;
199
200	value=colval(pixel,i);
201	if (value < 0.0)
202	return 0.0;
203	else if (value> 1.0)
204	return 1.0;
205	return value;
206	}
207
208	pix_ra(infile,outfile)
209	char *infile;
210	char *outfile;
211	{
212	/* PIXAR variables */
213	RGBAPixelType *pixar_scanline;
214	PFILE *in;
215	/* RADIANCE variables */
216	COLOR *radiance_scanline;
217	FILE *out;
218	/* regular variables */
219	int width;
220	int height;
221	register int x;
222	register int y;
223
224	if (!(in=PicOpen(infile,"r")))
225	{
226	fprintf(stderr,"can't open PIXAR image file `%s'\n",infile);
227	perror("open");
228	exit(1);
229	}
230	if (!(out=fopen(outfile,"w")))
231	{
232	fprintf(stderr,"can't open RADIANCE image file `%s'\n",outfile);
233	perror("open");
234	exit(1);
235	}
236
237	/* get width, height from PIXAR file */
238	width=in->Pwidth;
239	height=in->Pheight;
240
241	/* allocate scan line space */
242	radiance_scanline=(COLOR )malloc(widthsizeof(COLOR));
243	pixar_scanline=(RGBAPixelType )malloc(widthsizeof(RGBAPixelType));
244	if (!radiance_scanline \|\| !pixar_scanline)
245	{
246	fprintf(stderr,"not enough memory?\n");
247	perror("malloc");
248	exit(1);
249	}
250
251	/* write out the RADIANCE header */
252	radiance_writeheader(out,width,height);
253
254	picPreDecodeScanline(in,0);
255	for (y=0; y < height ; ++y)
256	{
257	picDecodeScanline(in,pixar_scanline);
258	for (x=0; x < width ; ++x)
259	{
260	setcolor(radiance_scanline[x],
261	PXL2DBL(pixar_scanline[x].Red),
262	PXL2DBL(pixar_scanline[x].Green),
263	PXL2DBL(pixar_scanline[x].Blue));
264	}
265	radiance_writescanline(out,radiance_scanline,width);
266	}
267	picPostDecodeScanline(in);
268	PicClose(in);
269	fclose(out);
270	}
271
272
273	radiance_writeheader(fp,x,y)
274	FILE *fp;
275	int x;
276	int y;
277	{
278	printargs(global_argc,global_argv,fp);
279	fputc('\n',fp);
280	fputresolu(YMAJOR\|YDECR, x, y, fp);
281	fflush(fp);
282	}
283
284
285	radiance_writescanline(fp,buf,x)
286	FILE *fp;
287	COLOR *buf;
288	int x;
289	{
290	if (fwritescan(buf,x,fp) < 0)
291	{
292	fprintf(stderr,"write error?\n");
293	perror("fwrite");
294	exit(1);
295	}
296	}