src/px/ra_pixar.c

/* Copyright (c) 1991 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ 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                 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
#include "resolu.h"


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) < 0)
   {
      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);
   fprtresolu(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:	1.4
Committed:	Mon Nov 11 14:01:21 1991 UTC (32 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.3:	+5 -12 lines
Log Message:	Improved handling of scanline ordering
#	User	Rev	Content
1	greg	1.4	/* Copyright (c) 1991 Regents of the University of California */
2
3	greg	1.3	#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7	greg	1.1	/* ra_pixar.c */
8			/*
9			* convert from RADIANCE image file to PIXAR image file. (or vice versa)
10			*
11			* David G. Jones July 1989
12			*/
13			/* External functions called:
14			*
15			* header.c:
16			* getheader(fp,func);
17			* printargs(argc,argv,fp);
18			* color.c:
19			* freadscan(scanline,len,fp);
20			* fwritescan(scanline,len,fp);
21			*/
22
23			#include <stdio.h>
24			#include <math.h>
25
26			/* PIXAR */
27			#include <picio.h>
28			#include <pixeldef.h>
29			#include <chad.h>
30
31			/* RADIANCE (color.h conflicts with PIXAR includes) ugh!! */
32			#ifdef undef
33			#include "color.h"
34			#else
35			#define RED 0
36			#define GRN 1
37			#define BLU 2
38			#define EXP 3
39			#define colval(col,pri) ((col)[pri])
40			#define setcolor(col,r,g,b) \
41			((col)[RED]=(r),(col)[GRN]=(g),(col)[BLU]=(b))
42			typedef float COLOR[3]; /* red, green, blue */
43			#endif
44	greg	1.4	#include "resolu.h"
45	greg	1.1
46
47			char *ProgramName;
48			int global_argc;
49			char **global_argv;
50
51			/* RADIANCE global variables */
52			FILE *radiance_fp = NULL;
53			double radiance_pixel();
54
55			usage()
56			{
57			fprintf(stderr,"usage: %s radiance.pic pixar.pix\n",ProgramName);
58			fprintf(stderr," or %s -r pixar.pix radiance.pic\n",ProgramName);
59			exit(1);
60			}
61
62
63			main(argc,argv)
64			int argc;
65			char *argv[];
66			{
67			char *infile;
68			char *outfile;
69			int i;
70			int reverse = 0;
71
72			ProgramName=argv[0];
73			if (argc < 3)
74			usage();
75			infile=argv[argc-2];
76			outfile=argv[argc-1];
77			for (i=1; i < argc-2 ; ++i)
78			if (!strcmp(argv[i],"-r"))
79			reverse=1;
80			else
81			usage();
82
83			if (reverse)
84			{
85			global_argc=argc;
86			global_argv=argv;
87			pix_ra(infile,outfile);
88			}
89			else
90			ra_pix(infile,outfile);
91			}
92
93			ra_pix(infile,outfile)
94			char *infile;
95			char *outfile;
96			{
97			/* PIXAR variables */
98			RGBAPixelType *pixar_scanline;
99			PFILE *out;
100			/* RADIANCE variables */
101			COLOR *radiance_scanline;
102			/* regular variables */
103			int width;
104			int height;
105			register int x;
106			register int y;
107
108			/* get width, height from radiance file */
109			radiance_getsize(infile,&width,&height);
110			radiance_scanline=(COLOR )malloc(widthsizeof(COLOR));
111			pixar_scanline=(RGBAPixelType )malloc(widthsizeof(RGBAPixelType));
112			if (!radiance_scanline \|\| !pixar_scanline)
113			{
114			fprintf(stderr,"not enough memory?\n");
115			perror("malloc");
116			exit(1);
117			}
118			bzero(pixar_scanline,width*sizeof(RGBAPixelType));
119
120			PicSetForce(1);
121			PicSetPsize(width,height);
122			PicSetTsize(width,height);
123			PicSetPformat(PF_RGB);
124			PicSetPstorage(PS_12DUMP);
125			PicSetPmatting(PM_NONE);
126			PicSetOffset(0,0);
127			PicSetLabel("converted from RADIANCE format by ra_pixar");
128			if (!(out=PicCreat(outfile,0666)))
129			{
130			fprintf(stderr,"can't open PIXAR image file `%s'\n",outfile);
131			perror("open");
132			exit(1);
133			}
134
135			picPreEncodeScanline(out,0);
136			for (y=0; y < height ; ++y)
137			{
138			radiance_readscanline(radiance_scanline,width);
139			for (x=0; x < width ; ++x)
140			{
141			SetRGBColor(&pixar_scanline[x],
142			DBL2PXL(radiance_pixel(radiance_scanline[x],RED)),
143			DBL2PXL(radiance_pixel(radiance_scanline[x],GRN)),
144			DBL2PXL(radiance_pixel(radiance_scanline[x],BLU)));
145			}
146			picEncodeScanline(out,pixar_scanline);
147			}
148			picPostEncodeScanline(out);
149			fclose(radiance_fp);
150			PicClose(out);
151			}
152
153
154			radiance_getsize(filename,w,h)
155			char *filename;
156			int *w;
157			int *h;
158			{
159			if (!(radiance_fp=fopen(filename,"r")))
160			{
161			fprintf(stderr,"can't open RADIANCE image file `%s'\n",filename);
162			perror("open");
163			exit(1);
164			}
165			getheader(radiance_fp,NULL);
166	greg	1.4	if (fgetresolu(w, h, radiance_fp) < 0)
167	greg	1.1	{
168			fprintf(stderr,"bad RADIANCE format\n");
169			exit(1);
170			}
171			}
172
173
174			radiance_readscanline(buf,x)
175			COLOR *buf;
176			int x;
177			{
178			if (freadscan(buf,x,radiance_fp) < 0)
179			{
180			fprintf(stderr,"read error?\n");
181			perror("fread");
182			exit(1);
183			}
184			}
185
186
187			double radiance_pixel(pixel,i)
188			COLOR pixel;
189			int i;
190			{
191			double value;
192
193			value=colval(pixel,i);
194			if (value < 0.0)
195			return 0.0;
196			else if (value> 1.0)
197			return 1.0;
198			return value;
199			}
200
201			pix_ra(infile,outfile)
202			char *infile;
203			char *outfile;
204			{
205			/* PIXAR variables */
206			RGBAPixelType *pixar_scanline;
207			PFILE *in;
208			/* RADIANCE variables */
209			COLOR *radiance_scanline;
210			FILE *out;
211			/* regular variables */
212			int width;
213			int height;
214			register int x;
215			register int y;
216
217			if (!(in=PicOpen(infile,"r")))
218			{
219			fprintf(stderr,"can't open PIXAR image file `%s'\n",infile);
220			perror("open");
221			exit(1);
222			}
223			if (!(out=fopen(outfile,"w")))
224			{
225			fprintf(stderr,"can't open RADIANCE image file `%s'\n",outfile);
226			perror("open");
227			exit(1);
228			}
229
230			/* get width, height from PIXAR file */
231			width=in->Pwidth;
232			height=in->Pheight;
233
234			/* allocate scan line space */
235			radiance_scanline=(COLOR )malloc(widthsizeof(COLOR));
236			pixar_scanline=(RGBAPixelType )malloc(widthsizeof(RGBAPixelType));
237			if (!radiance_scanline \|\| !pixar_scanline)
238			{
239			fprintf(stderr,"not enough memory?\n");
240			perror("malloc");
241			exit(1);
242			}
243
244			/* write out the RADIANCE header */
245			radiance_writeheader(out,width,height);
246
247			picPreDecodeScanline(in,0);
248			for (y=0; y < height ; ++y)
249			{
250			picDecodeScanline(in,pixar_scanline);
251			for (x=0; x < width ; ++x)
252			{
253			setcolor(radiance_scanline[x],
254			PXL2DBL(pixar_scanline[x].Red),
255			PXL2DBL(pixar_scanline[x].Green),
256			PXL2DBL(pixar_scanline[x].Blue));
257			}
258			radiance_writescanline(out,radiance_scanline,width);
259			}
260			picPostDecodeScanline(in);
261			PicClose(in);
262			fclose(out);
263			}
264
265
266			radiance_writeheader(fp,x,y)
267			FILE *fp;
268			int x;
269			int y;
270			{
271			printargs(global_argc,global_argv,fp);
272			fputc('\n',fp);
273	greg	1.4	fprtresolu(x, y, fp);
274	greg	1.1	fflush(fp);
275			}
276
277
278			radiance_writescanline(fp,buf,x)
279			FILE *fp;
280			COLOR *buf;
281			int x;
282			{
283			if (fwritescan(buf,x,fp) < 0)
284			{
285			fprintf(stderr,"write error?\n");
286			perror("fwrite");
287			exit(1);
288			}
289			}