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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* pvalue.c - program to print pixel values. |
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#define ALL 3 |
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#define BRIGHT 4 |
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#define brightonly (putprim==BRIGHT) |
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RESOLU picres; /* resolution of picture */ |
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int uniq = 0; /* print only unique values? */ |
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long skipbytes = 0; /* skip bytes in input? */ |
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int swapbytes = 0; /* swap bytes in 16-bit words? */ |
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int interleave = 1; /* file is interleaved? */ |
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int resolution = 1; /* put/get resolution string? */ |
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format = 'b'; |
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fmtid = "byte"; |
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break; |
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case 'W': /* 16-bit swapped */ |
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swapbytes = 1; |
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case 'w': /* 16-bit */ |
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dataonly = 1; |
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format = 'w'; |
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break; |
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/* recognize special formats */ |
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if (dataonly && format == 'b') |
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if (brightonly) |
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fmtid = "8-bit_grey"; |
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else |
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if (putprim == ALL) |
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fmtid = "24-bit_rgb"; |
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if (dataonly && format == 'w') |
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if (brightonly) |
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fmtid = "16-bit_grey"; |
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else |
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fmtid = "8-bit_grey"; |
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if (dataonly && format == 'w') |
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if (putprim == ALL) |
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fmtid = "48-bit_rgb"; |
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else |
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fmtid = "16-bit_grey"; |
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/* assign reverse ordering */ |
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rord[ord[0]] = 0; |
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rord[ord[1]] = 1; |
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progname, argv[i]); |
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quit(1); |
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} |
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if (reverse && !brightonly && i == argc-3) { |
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if (reverse && putprim != BRIGHT && i == argc-3) { |
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if ((fin2 = fopen(argv[i+1], "r")) == NULL) { |
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fprintf(stderr, "%s: can't open file \"%s\"\n", |
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progname, argv[i+1]); |
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interleave = -1; |
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} else if (i != argc-1) |
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fin = NULL; |
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if (reverse && !brightonly && !interleave) { |
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if (reverse && putprim != BRIGHT && !interleave) { |
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fin2 = fopen(argv[i], "r"); |
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fin3 = fopen(argv[i], "r"); |
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} |
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} |
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swap16(wp, n) /* swap n 16-bit words */ |
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register uint16 *wp; |
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int n; |
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{ |
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while (n-- > 0) { |
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*wp = *wp << 8 | ((*wp >> 8) & 0xff); |
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wp++; |
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} |
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} |
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getcascii(col) /* get an ascii color value from stream(s) */ |
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COLOR col; |
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{ |
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fread((char *)(vw+2), sizeof(uint16), 1, fin3) != 1) |
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return(-1); |
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} |
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if (swapbytes) |
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swap16(vw, 3); |
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setcolor(col, (vw[rord[RED]]+.5)/65536., |
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(vw[rord[GRN]]+.5)/65536., (vw[rord[BLU]]+.5)/65536.); |
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return(0); |
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if (fread((char *)&vw, sizeof(uint16), 1, fin) != 1) |
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return(-1); |
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if (swapbytes) |
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swap16(&vw, 1); |
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d = (vw+.5)/65536.; |
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setcolor(col, d, d, d); |
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return(0); |
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vw[1] = min(i,65535); |
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i = colval(col,ord[2])*65536.; |
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vw[2] = min(i,65535); |
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if (swapbytes) |
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swap16(vw, 3); |
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fwrite((char *)vw, sizeof(uint16), 3, stdout); |
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return(ferror(stdout) ? -1 : 0); |
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i = (*mybright)(col)*65536.; |
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vw = min(i,65535); |
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if (swapbytes) |
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swap16(&vw, 1); |
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fwrite((char *)&vw, sizeof(uint16), 1, stdout); |
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return(ferror(stdout) ? -1 : 0); |
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i = colval(col,putprim)*65536.; |
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vw = min(i,65535); |
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if (swapbytes) |
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swap16(&vw, 1); |
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fwrite((char *)&vw, sizeof(uint16), 1, stdout); |
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return(ferror(stdout) ? -1 : 0); |