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#ifndef lint |
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static const char RCSid[] = "$Id: ra_pict.c,v 2.8 2003/02/22 02:07:27 greg Exp $"; |
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#endif |
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/* Convert an Radiance image to APPLE pict format. |
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* |
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* Orginally Iris to PICT by Paul Haeberli - 1990 |
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* Hacked into Rad to PICT by Russell Street 1990 |
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* |
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* History: |
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* V 1 -- Does basic conversion |
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* V 1.1 (2/11/91) -- Added options for Gamma |
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* -- verbose option |
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* -- man page |
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* -- better about allocating buffers |
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* V 1.2 (19/11/91) -- Revised to handle opening "The Radiance Way" |
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* -- Added exposure level adjustment |
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*/ |
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|
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#include <stdio.h> |
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#include <math.h> |
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#include <time.h> |
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|
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#include "platform.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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int outbytes; /* This had better be 32 bits! */ |
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char *progname; |
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int verbose = 0; |
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float gamcor = 2.0; |
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int bradj = 0; |
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|
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/* First some utility routines */ |
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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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int b; |
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{ |
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if (putc(b,stdout) == EOF && ferror(stdout)) { |
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fprintf(stderr,"%s: error on write\n", progname); |
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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,stdout)) { |
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fprintf(stderr,"%s: error on write\n", progname); |
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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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SET_DEFAULT_BINARY(); |
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SET_FILE_BINARY(stdin); |
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SET_FILE_BINARY(stdout); |
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progname = argv[0]; |
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|
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for (i = 1; i < argc ; i++) |
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if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 'g': gamcor = atof(argv[++i]); |
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break; |
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|
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case 'e': if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
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usage(); |
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else |
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bradj = atoi(argv[++i]); |
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break; |
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|
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case 'v': ; |
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verbose = 1; |
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break; |
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|
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case 'r': fprintf(stderr, "Sorry. Get a Macintosh :-)\n"); |
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exit(1); |
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|
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case '-': i++; |
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goto outofparse; |
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break; /* NOTREACHED */ |
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|
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otherwise: usage(); |
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break; |
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} |
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else |
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break; |
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|
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outofparse: |
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|
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if (i < argc - 2) |
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usage(); |
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|
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if (i <= argc - 1 && freopen(argv[i], "r", stdin) == NULL) { |
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fprintf(stderr, "%s: can not open input \"%s\"\n", |
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progname, argv[i]); |
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exit(1); |
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} |
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|
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if (i <= argc - 2 && freopen(argv[i+1], "w", stdout) == NULL) { |
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fprintf(stderr, "%s: can not open input \"%s\"\n", |
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progname, argv[i+1]); |
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exit(1); |
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} |
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|
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#ifdef DEBUG |
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fprintf(stderr, "Input file: %s\n", i <= argc - 1 ? argv[i] : "stdin"); |
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fprintf(stderr, "Outut file: %s\n", i <= argc - 2 ? argv[i+1] : "stdout" ); |
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fprintf(stderr, "Gamma: %f\n", gamcor); |
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fprintf(stderr, "Brightness adjust: %d\n", bradj); |
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fprintf(stderr, "Verbose: %s\n", verbose ? "on" : "off"); |
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#endif |
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|
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|
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/* OK. Now we read the size of the Radiance picture */ |
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if (checkheader(stdin, COLRFMT, NULL) < 0 || |
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fgetresolu(&xsize, &ysize, stdin) < 0 /* != (YMAJOR|YDECR) */ ) { |
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fprintf(stderr, "%s: not a radiance picture\n", progname); |
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exit(1); |
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} |
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|
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/* Set the gamma correction */ |
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|
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setcolrgam(gamcor); |
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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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|
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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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if (verbose) |
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fprintf(stderr, "%s: The picture is %d by %d, with a gamma of %f\n", |
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progname, xsize, ysize, gamcor); |
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|
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|
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putpict(xsize, ysize); /* Here is where all the work is done */ |
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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(stdout,ssizepos,0); |
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putashort(picsize&0xffff); |
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fseek(stdout,lsizepos,0); |
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putalong(picsize); |
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|
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fclose(stdout); |
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fclose(stdin); |
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|
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exit(0); |
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return 0; /* lint fodder */ |
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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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char *cbuf, *pbuf; |
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|
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cbuf = (char *)malloc(4 * xsize); |
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|
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if (cbuf == NULL) { |
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fprintf(stderr, "%s: not enough memory\n", progname); |
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exit(1); |
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} |
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|
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pbuf = (char *)malloc(4 * xsize); |
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|
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if (pbuf == NULL) { |
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fprintf(stderr, "%s: not enough memory\n", progname); |
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exit(1); |
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} |
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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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|
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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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|
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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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|
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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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|
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putashort(0x40); /* transfer mode */ |
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|
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for(y=0; y<ysize; y++) { |
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getrow(stdin, 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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free(cbuf); |
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free(pbuf); |
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} |
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|
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int getrow(in, cbuf, xsize) |
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FILE *in; |
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char *cbuf; |
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int xsize; |
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{ |
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extern char *tempbuffer(); /* defined in color.c */ |
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COLR *scanin = NULL; |
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int x; |
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|
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if ((scanin = (COLR *)tempbuffer(xsize*sizeof(COLR))) == NULL) { |
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fprintf(stderr, "%s: not enough memory\n", progname); |
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exit(1); |
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} |
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|
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if (freadcolrs(scanin, xsize, in) < 0) { |
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fprintf(stderr, "%s: read error\n", progname); |
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exit(1); |
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} |
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|
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if (bradj) /* Adjust exposure level */ |
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shiftcolrs(scanin, xsize, bradj); |
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|
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|
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colrs_gambs(scanin, xsize); /* Gamma correct it */ |
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|
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for (x = 0; x < xsize; x++) { |
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cbuf[x] = scanin[x][RED]; |
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cbuf[xsize + x] = scanin[x][GRN]; |
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cbuf[2*xsize + x] = scanin[x][BLU]; |
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} |
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|
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} |
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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; /* UNUSED */ |
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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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} |
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|
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usage() |
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{ |
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fprintf(stderr, "Usage: %s [-v] [-g gamma] [infile [outfile]]\n", |
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progname); |
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exit(2); |
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} |
