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#ifndef lint |
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static const char RCSid[] = "$Id: ra_pixar.c,v 2.3 2003/06/30 14:59:12 schorsch Exp $"; |
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#endif |
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/* ra_pixar.c */ |
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/* |
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* convert from RADIANCE image file to PIXAR image file. (or vice versa) |
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* |
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* David G. Jones July 1989 |
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*/ |
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/* External functions called: |
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* |
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* header.c: |
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* getheader(fp,func); |
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* printargs(argc,argv,fp); |
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* color.c: |
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* freadscan(scanline,len,fp); |
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* fwritescan(scanline,len,fp); |
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*/ |
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|
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#include <stdio.h> |
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#include <string.h> |
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#include <math.h> |
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#include <time.h> |
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|
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/* PIXAR */ |
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#include <picio.h> |
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#include <pixeldef.h> |
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#include <chad.h> |
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|
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/* RADIANCE (color.h conflicts with PIXAR includes) ugh!! */ |
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#ifdef undef |
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#include "color.h" |
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#else |
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#define RED 0 |
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#define GRN 1 |
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#define BLU 2 |
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#define EXP 3 |
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#define colval(col,pri) ((col)[pri]) |
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#define setcolor(col,r,g,b) \ |
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((col)[RED]=(r),(col)[GRN]=(g),(col)[BLU]=(b)) |
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typedef float COLOR[3]; /* red, green, blue */ |
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#endif |
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#include "resolu.h" |
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|
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|
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char *ProgramName; |
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int global_argc; |
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char **global_argv; |
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|
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/* RADIANCE global variables */ |
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FILE *radiance_fp = NULL; |
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double radiance_pixel(); |
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|
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usage() |
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{ |
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fprintf(stderr,"usage: %s radiance.pic pixar.pix\n",ProgramName); |
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fprintf(stderr," or %s -r pixar.pix radiance.pic\n",ProgramName); |
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exit(1); |
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} |
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|
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|
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main(argc,argv) |
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int argc; |
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char *argv[]; |
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{ |
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char *infile; |
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char *outfile; |
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int i; |
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int reverse = 0; |
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|
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ProgramName=argv[0]; |
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if (argc < 3) |
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usage(); |
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infile=argv[argc-2]; |
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outfile=argv[argc-1]; |
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for (i=1; i < argc-2 ; ++i) |
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if (!strcmp(argv[i],"-r")) |
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reverse=1; |
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else |
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usage(); |
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|
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if (reverse) |
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{ |
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global_argc=argc; |
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global_argv=argv; |
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pix_ra(infile,outfile); |
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} |
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else |
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ra_pix(infile,outfile); |
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} |
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|
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ra_pix(infile,outfile) |
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char *infile; |
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char *outfile; |
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{ |
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/* PIXAR variables */ |
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RGBAPixelType *pixar_scanline; |
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PFILE *out; |
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/* RADIANCE variables */ |
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COLOR *radiance_scanline; |
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/* regular variables */ |
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int width; |
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int height; |
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register int x; |
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register int y; |
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|
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/* get width, height from radiance file */ |
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radiance_getsize(infile,&width,&height); |
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radiance_scanline=(COLOR *)malloc(width*sizeof(COLOR)); |
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pixar_scanline=(RGBAPixelType *)malloc(width*sizeof(RGBAPixelType)); |
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if (!radiance_scanline || !pixar_scanline) |
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{ |
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fprintf(stderr,"not enough memory?\n"); |
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perror("malloc"); |
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exit(1); |
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} |
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memset(pixar_scanline, '\0', width*sizeof(RGBAPixelType)); |
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|
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PicSetForce(1); |
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PicSetPsize(width,height); |
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PicSetTsize(width,height); |
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PicSetPformat(PF_RGB); |
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PicSetPstorage(PS_12DUMP); |
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PicSetPmatting(PM_NONE); |
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PicSetOffset(0,0); |
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PicSetLabel("converted from RADIANCE format by ra_pixar"); |
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if (!(out=PicCreat(outfile,0666))) |
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{ |
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fprintf(stderr,"can't open PIXAR image file `%s'\n",outfile); |
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perror("open"); |
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exit(1); |
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} |
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|
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picPreEncodeScanline(out,0); |
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for (y=0; y < height ; ++y) |
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{ |
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radiance_readscanline(radiance_scanline,width); |
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for (x=0; x < width ; ++x) |
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{ |
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SetRGBColor(&pixar_scanline[x], |
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DBL2PXL(radiance_pixel(radiance_scanline[x],RED)), |
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DBL2PXL(radiance_pixel(radiance_scanline[x],GRN)), |
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DBL2PXL(radiance_pixel(radiance_scanline[x],BLU))); |
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} |
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picEncodeScanline(out,pixar_scanline); |
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} |
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picPostEncodeScanline(out); |
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fclose(radiance_fp); |
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PicClose(out); |
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} |
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|
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|
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radiance_getsize(filename,w,h) |
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char *filename; |
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int *w; |
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int *h; |
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{ |
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if (!(radiance_fp=fopen(filename,"r"))) |
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{ |
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fprintf(stderr,"can't open RADIANCE image file `%s'\n",filename); |
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perror("open"); |
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exit(1); |
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} |
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getheader(radiance_fp,NULL,NULL); |
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if (fgetresolu(w, h, radiance_fp) < 0) |
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{ |
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fprintf(stderr,"bad RADIANCE format\n"); |
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exit(1); |
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} |
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} |
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|
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|
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radiance_readscanline(buf,x) |
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COLOR *buf; |
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int x; |
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{ |
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if (freadscan(buf,x,radiance_fp) < 0) |
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{ |
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fprintf(stderr,"read error?\n"); |
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perror("fread"); |
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exit(1); |
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} |
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} |
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|
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|
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double radiance_pixel(pixel,i) |
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COLOR pixel; |
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int i; |
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{ |
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double value; |
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|
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value=colval(pixel,i); |
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if (value < 0.0) |
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return 0.0; |
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else if (value> 1.0) |
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return 1.0; |
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return value; |
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} |
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|
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pix_ra(infile,outfile) |
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char *infile; |
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char *outfile; |
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{ |
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/* PIXAR variables */ |
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RGBAPixelType *pixar_scanline; |
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PFILE *in; |
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/* RADIANCE variables */ |
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COLOR *radiance_scanline; |
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FILE *out; |
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/* regular variables */ |
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int width; |
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int height; |
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register int x; |
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register int y; |
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|
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if (!(in=PicOpen(infile,"r"))) |
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{ |
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fprintf(stderr,"can't open PIXAR image file `%s'\n",infile); |
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perror("open"); |
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exit(1); |
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} |
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if (!(out=fopen(outfile,"w"))) |
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{ |
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fprintf(stderr,"can't open RADIANCE image file `%s'\n",outfile); |
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perror("open"); |
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exit(1); |
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} |
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|
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/* get width, height from PIXAR file */ |
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width=in->Pwidth; |
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height=in->Pheight; |
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|
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/* allocate scan line space */ |
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radiance_scanline=(COLOR *)malloc(width*sizeof(COLOR)); |
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pixar_scanline=(RGBAPixelType *)malloc(width*sizeof(RGBAPixelType)); |
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if (!radiance_scanline || !pixar_scanline) |
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{ |
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fprintf(stderr,"not enough memory?\n"); |
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perror("malloc"); |
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exit(1); |
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} |
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|
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/* write out the RADIANCE header */ |
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radiance_writeheader(out,width,height); |
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|
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picPreDecodeScanline(in,0); |
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for (y=0; y < height ; ++y) |
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{ |
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picDecodeScanline(in,pixar_scanline); |
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for (x=0; x < width ; ++x) |
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{ |
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setcolor(radiance_scanline[x], |
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PXL2DBL(pixar_scanline[x].Red), |
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PXL2DBL(pixar_scanline[x].Green), |
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PXL2DBL(pixar_scanline[x].Blue)); |
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} |
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radiance_writescanline(out,radiance_scanline,width); |
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} |
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picPostDecodeScanline(in); |
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PicClose(in); |
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fclose(out); |
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} |
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|
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|
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radiance_writeheader(fp,x,y) |
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FILE *fp; |
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int x; |
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int y; |
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{ |
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printargs(global_argc,global_argv,fp); |
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fputc('\n',fp); |
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fprtresolu(x, y, fp); |
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fflush(fp); |
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} |
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|
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|
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radiance_writescanline(fp,buf,x) |
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FILE *fp; |
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COLOR *buf; |
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int x; |
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{ |
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if (fwritescan(buf,x,fp) < 0) |
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{ |
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fprintf(stderr,"write error?\n"); |
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perror("fwrite"); |
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exit(1); |
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} |
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} |
