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/* Copyright (c) 1986 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* ra_t16.c - program to convert between RADIANCE and |
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* Targa 16, 24 and 32-bit images. |
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#include <stdio.h> |
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#ifdef MSDOS |
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#include <fcntl.h> |
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#endif |
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#include <time.h> |
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#include <math.h> |
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#include "color.h" |
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#include "resolu.h" |
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#include "random.h" |
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#include "targa.h" |
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extern char *ecalloc(), *emalloc(); |
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extern double atof(), pow(); |
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double gamcor = 2.2; /* gamma correction */ |
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double gamma = 2.0; /* gamma correction */ |
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int bradj = 0; /* brightness adjustment */ |
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char *progname; |
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struct hdStruct head; |
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int reverse = 0; |
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int i; |
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#ifdef MSDOS |
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extern int _fmode; |
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_fmode = O_BINARY; |
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setmode(fileno(stdin), O_BINARY); |
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setmode(fileno(stdout), O_BINARY); |
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#endif |
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progname = argv[0]; |
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head.dataBits = 16; |
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if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 'g': |
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gamma = atof(argv[++i]); |
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gamcor = atof(argv[++i]); |
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break; |
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case 'r': |
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reverse = !reverse; |
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case '3': |
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head.dataBits = 24; |
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break; |
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case 'e': |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
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goto userr; |
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bradj = atoi(argv[++i]); |
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break; |
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default: |
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goto userr; |
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} |
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quiterr(msg); |
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} |
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/* set gamma */ |
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setcolrgam(gamma); |
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setcolrgam(gamcor); |
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/* convert */ |
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if (reverse) { |
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/* get header */ |
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if (!goodpic(&head)) |
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quiterr("incompatible format"); |
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/* put header */ |
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newheader("RADIANCE", stdout); |
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printargs(i, argv, stdout); |
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fputformat(COLRFMT, stdout); |
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putchar('\n'); |
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fputresolu(YMAJOR|YDECR, head.x, head.y, stdout); |
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fprtresolu(head.x, head.y, stdout); |
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/* convert file */ |
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tg2ra(&head); |
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} else { |
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if (checkheader(stdin, COLRFMT, NULL) < 0 || |
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fgetresolu(&head.x, &head.y, stdin) != (YMAJOR|YDECR)) |
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fgetresolu(&head.x, &head.y, stdin) < 0) |
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quiterr("bad picture file"); |
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/* assign header */ |
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head.textSize = 0; |
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} |
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exit(0); |
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userr: |
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fprintf(stderr, "Usage: %s [-2|-3|-r][-g gamma] [input [output]]\n", |
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fprintf(stderr, "Usage: %s [-2|-3|-r][-g gamma][-e +/-stops] [input [output]]\n", |
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progname); |
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exit(1); |
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} |
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} |
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void |
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eputs(s) |
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char *s; |
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{ |
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} |
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void |
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quit(code) |
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int code; |
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{ |
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} |
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} |
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gambs_colrs(scanline, hp->x); |
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if (bradj) |
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shiftcolrs(scanline, hp->x, bradj); |
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if (fwritecolrs(scanline, hp->x, stdout) < 0) |
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quiterr("error writing RADIANCE file"); |
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} |
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free((char *)scanline); |
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free((char *)tarData); |
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free((void *)scanline); |
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free((void *)tarData); |
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} |
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for (j = hp->y-1; j >= 0; j--) { |
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if (freadcolrs(inl, hp->x, stdin) < 0) |
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quiterr("error reading RADIANCE file"); |
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if (bradj) |
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shiftcolrs(inl, hp->x, bradj); |
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colrs_gambs(inl, hp->x); |
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if (hp->dataBits == 16) { |
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register unsigned short *dp; |
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register int v; |
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dp = (unsigned short *)tarData + j*hp->x; |
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for (i = 0; i < hp->x; i++) { |
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*dp = ((inl[i][RED]+(random()&7)) & 0xf8)<<7; |
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*dp |= ((inl[i][GRN]+(random()&7)) & 0xf8)<<2; |
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*dp++ |= (inl[i][BLU]+(random()&7))>>3; |
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v = inl[i][RED] + (random()&7); |
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if (v > 255) v = 255; |
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*dp = (v&0xf8)<<7; |
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v = inl[i][GRN] + (random()&7); |
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if (v > 255) v = 255; |
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*dp |= (v&0xf8)<<2; |
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v = inl[i][BLU] + (random()&7); |
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if (v > 255) v = 255; |
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*dp++ |= v>>3; |
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} |
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} else { /* hp->dataBits == 24 */ |
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register unsigned char *dp; |
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/* write out targa data */ |
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writetarga(hp, tarData, stdout); |
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free((char *)inl); |
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free((char *)tarData); |
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free((void *)inl); |
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free((void *)tarData); |
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} |
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