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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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/* |
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rad2pict - Convert an Radiance image to APPLE pict format. |
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|
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School of Architecture, Auckland University, Private Bag |
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Auckland, New Zealand |
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*/ |
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#include <stdio.h> |
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#include "pict.h" |
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#include "color.h" |
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#include "resolu.h" |
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|
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extern char *malloc(); |
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|
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char cbuf[8192*5]; |
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char pbuf[8192]; |
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int outbytes; |
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FILE *outf, *inf; |
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char **gargv; |
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|
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putrect(xorg,yorg,xsize,ysize) |
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int xorg, yorg, xsize, ysize; |
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{ |
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putashort(yorg); |
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putashort(xorg); |
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putashort(ysize); |
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putashort(xsize); |
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} |
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|
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putfprect(xorg,yorg,xsize,ysize) |
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int xorg, yorg, xsize, ysize; |
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{ |
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putalong(yorg<<16); |
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putalong(xorg<<16); |
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putalong(ysize<<16); |
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putalong(xsize<<16); |
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} |
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|
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putalong(l) |
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long l; |
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{ |
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putbyte((l>>24)&0xff); |
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putbyte((l>>16)&0xff); |
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putbyte((l>>8)&0xff); |
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putbyte((l>>0)&0xff); |
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} |
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|
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putashort(s) |
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short s; |
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{ |
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putbyte((s>>8)&0xff); |
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putbyte((s>>0)&0xff); |
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} |
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|
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putbyte(b) |
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unsigned char b; |
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{ |
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char c[1]; |
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|
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c[0] = b; |
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if(!fwrite(c,1,1,outf)) { |
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fprintf(stderr,"%s: error on write\n", gargv[0]); |
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exit(1); |
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} |
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outbytes++; |
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} |
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|
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putbytes(buf,n) |
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unsigned char *buf; |
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int n; |
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{ |
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if(!fwrite(buf,n,1,outf)) { |
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fprintf(stderr,"topict: error on write\n"); |
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exit(1); |
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} |
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outbytes+=n; |
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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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int xsize, ysize; |
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int i, picsize; |
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int ssizepos, lsizepos; |
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|
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gargv = argv; |
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|
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if( argc<3 ) { |
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fprintf(stderr, "Usage: %s inimage out.pict\n", gargv[0]); |
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exit(1); |
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} |
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|
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if( (inf=fopen(gargv[1],"rb")) == NULL ) { |
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fprintf(stderr,"%s: can't open input file %s\n",gargv[0], gargv[1]); |
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exit(1); |
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} |
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|
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if( (outf=fopen(gargv[2],"wb")) == NULL ) { |
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fprintf(stderr,"%s: can't open output file %s\n", gargv[0], gargv[1]); |
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exit(1); |
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} |
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|
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if (checkheader(inf, COLRFMT, NULL) < 0 || |
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fgetresolu(&xsize, &ysize, inf) < 0) { |
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fprintf(stderr, "%s: not a radiance picture\n", argv[1]); |
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exit(1); |
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} |
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|
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setcolrgam(2.0); |
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|
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for(i=0; i<HEADER_SIZE; i++) |
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putbyte(0); |
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ssizepos = outbytes; |
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putashort(0); /* low 16 bits of file size less HEADER_SIZE */ |
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putrect(0,0,xsize,ysize); /* bounding box of picture */ |
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putashort(PICT_picVersion); |
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putashort(0x02ff); /* version 2 pict */ |
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putashort(PICT_reservedHeader); /* reserved header opcode */ |
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|
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lsizepos = outbytes; |
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putalong(0); /* full size of the file */ |
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putfprect(0,0,xsize,ysize); /* fixed point bounding box of picture */ |
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putalong(0); /* reserved */ |
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|
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putashort(PICT_clipRgn); /* the clip region */ |
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putashort(10); |
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putrect(0,0,xsize,ysize); |
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|
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putpict(xsize, ysize); |
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|
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putashort(PICT_EndOfPicture); /* end of pict */ |
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|
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picsize = outbytes-HEADER_SIZE; |
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fseek(outf,ssizepos,0); |
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putashort(picsize&0xffff); |
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fseek(outf,lsizepos,0); |
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putalong(picsize); |
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|
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fclose(outf); |
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exit(0); |
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} |
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|
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putpict(xsize, ysize) |
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int xsize; |
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int ysize; |
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{ |
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int y; |
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int nbytes, rowbytes; |
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|
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putashort(PICT_Pack32BitsRect); /* 32 bit rgb */ |
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rowbytes = 4*xsize; |
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putalong(0x000000ff); /* base address */ |
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|
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if(rowbytes&1) |
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rowbytes++; |
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putashort(rowbytes|0x8000); /* rowbytes */ |
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putrect(0,0,xsize,ysize); /* bounds */ |
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putashort(0); /* version */ |
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|
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putashort(4); /* packtype */ |
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putalong(0); /* packsize */ |
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putalong(72<<16); /* hres */ |
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putalong(72<<16); /* vres */ |
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|
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putashort(16); /* pixeltype */ |
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putashort(32); /* pixelsize */ |
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putashort(3); /* cmpcount */ |
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|
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putashort(8); /* cmpsize */ |
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putalong(0); /* planebytes */ |
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putalong(0); /* pmtable */ |
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putalong(0); /* pmreserved */ |
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|
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putrect(0,0,xsize,ysize); /* scr rect */ |
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putrect(0,0,xsize,ysize); /* dest rect */ |
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|
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putashort(0x40); /* transfer mode */ |
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for(y=0; y<ysize; y++) { |
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getrow(inf, cbuf, xsize); |
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|
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nbytes = packbits(cbuf,pbuf,24*xsize); |
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if(rowbytes>250) |
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putashort(nbytes); |
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else |
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putbyte(nbytes); |
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putbytes(pbuf,nbytes); |
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} |
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|
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if(outbytes&1) |
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putbyte(0); |
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} |
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|
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int |
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getrow(in, mybuff, xsize) |
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FILE *in; |
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char *mybuff; |
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int xsize; |
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{ |
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COLOR color; |
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COLR *scanin = (COLR*) malloc(xsize * sizeof(COLR)); |
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int x; |
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|
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if (scanin == NULL) { |
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printf("scanin null"); |
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} |
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|
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|
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if (freadcolrs(scanin, xsize, in) < 0) { |
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fprintf(stderr, " read error\n"); |
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exit(1); |
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} |
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|
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colrs_gambs(scanin, xsize); |
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|
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for (x = 0; x < xsize; x++) { |
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colr_color(color, scanin[x]); |
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cbuf[xsize * 0 + x] = color[RED] * 255; |
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cbuf[xsize * 1 + x] = color[GRN] * 255; |
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cbuf[xsize * 2 + x] = color[BLU] * 255; |
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} |
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free(scanin); |
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} |
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|
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packbits(ibits,pbits,nbits) |
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unsigned char *ibits, *pbits; |
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int nbits; |
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{ |
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int bytes; |
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unsigned char *sptr; |
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unsigned char *ibitsend; |
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unsigned char *optr = pbits; |
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int nbytes, todo, cc, count; |
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|
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nbytes = ((nbits-1)/8)+1; |
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ibitsend = ibits+nbytes; |
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while (ibits<ibitsend) { |
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sptr = ibits; |
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ibits += 2; |
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while((ibits<ibitsend)&&((ibits[-2]!=ibits[-1])||(ibits[-1]!=ibits[0]))) |
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ibits++; |
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if(ibits != ibitsend) { |
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ibits -= 2; |
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} |
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count = ibits-sptr; |
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while(count) { |
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todo = count>127 ? 127:count; |
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count -= todo; |
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*optr++ = todo-1; |
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while(todo--) |
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*optr++ = *sptr++; |
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} |
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if(ibits == ibitsend) |
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break; |
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sptr = ibits; |
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cc = *ibits++; |
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while( (ibits<ibitsend) && (*ibits == cc) ) |
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ibits++; |
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count = ibits-sptr; |
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while(count) { |
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todo = count>128 ? 128:count; |
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count -= todo; |
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*optr++ = 257-todo; |
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*optr++ = cc; |
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} |
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} |
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return optr-pbits; |
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} |
