199 lines
6.3 KiB
C
199 lines
6.3 KiB
C
/*
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* tiff-rgb.c -- create a 24-bit Class R (rgb) TIFF file
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*
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* Copyright 1990 by Digital Equipment Corporation, Maynard, Massachusetts.
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*
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* All Rights Reserved
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of Digital not be
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* used in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission.
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*
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* DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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* DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tiffio.h"
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#define ROUND(x) (uint16) ((x) + 0.5)
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#define CMSIZE 256
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#define WIDTH 525
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#define HEIGHT 512
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#define TIFF_GAMMA 2.2
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void Usage();
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char * programName;
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int main(int argc, char **argv)
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{
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char * input_file = NULL;
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double image_gamma = TIFF_GAMMA;
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int i, j;
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TIFF * tif;
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unsigned char * scan_line;
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uint16 red[CMSIZE], green[CMSIZE], blue[CMSIZE];
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float refblackwhite[2*3];
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programName = argv[0];
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switch (argc) {
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case 2:
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image_gamma = TIFF_GAMMA;
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input_file = argv[1];
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break;
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case 4:
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if (!strcmp(argv[1], "-gamma")) {
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image_gamma = atof(argv[2]);
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input_file = argv[3];
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} else
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Usage();
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break;
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default:
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Usage();
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}
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for (i = 0; i < CMSIZE; i++) {
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if (i == 0)
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red[i] = green[i] = blue[i] = 0;
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else {
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red[i] = ROUND((pow(i / 255.0, 1.0 / image_gamma) * 65535.0));
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green[i] = ROUND((pow(i / 255.0, 1.0 / image_gamma) * 65535.0));
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blue[i] = ROUND((pow(i / 255.0, 1.0 / image_gamma) * 65535.0));
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}
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}
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refblackwhite[0] = 0.0; refblackwhite[1] = 255.0;
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refblackwhite[2] = 0.0; refblackwhite[3] = 255.0;
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refblackwhite[4] = 0.0; refblackwhite[5] = 255.0;
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if ((tif = TIFFOpen(input_file, "w")) == NULL) {
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fprintf(stderr, "can't open %s as a TIFF file\n", input_file);
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exit(0);
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}
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TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, WIDTH);
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TIFFSetField(tif, TIFFTAG_IMAGELENGTH, HEIGHT);
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TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
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TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
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TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
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TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3);
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TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, 1);
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TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
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TIFFSetField(tif, TIFFTAG_RESOLUTIONUNIT, RESUNIT_NONE);
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#ifdef notdef
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TIFFSetField(tif, TIFFTAG_WHITEPOINT, whitex, whitey);
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TIFFSetField(tif, TIFFTAG_PRIMARYCHROMATICITIES, primaries);
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#endif
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TIFFSetField(tif, TIFFTAG_REFERENCEBLACKWHITE, refblackwhite);
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TIFFSetField(tif, TIFFTAG_TRANSFERFUNCTION, red, green, blue);
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scan_line = (unsigned char *) malloc(WIDTH * 3);
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for (i = 0; i < 255; i++) {
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for (j = 0; j < 75; j++) {
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scan_line[j * 3] = 255;
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scan_line[(j * 3) + 1] = 255 - i;
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scan_line[(j * 3) + 2] = 255 - i;
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}
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for (j = 75; j < 150; j++) {
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scan_line[j * 3] = 255 - i;
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scan_line[(j * 3) + 1] = 255;
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scan_line[(j * 3) + 2] = 255 - i;
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}
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for (j = 150; j < 225; j++) {
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scan_line[j * 3] = 255 - i;
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scan_line[(j * 3) + 1] = 255 - i;
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scan_line[(j * 3) + 2] = 255;
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}
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for (j = 225; j < 300; j++) {
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scan_line[j * 3] = (i - 1) / 2;
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scan_line[(j * 3) + 1] = (i - 1) / 2;
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scan_line[(j * 3) + 2] = (i - 1) / 2;
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}
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for (j = 300; j < 375; j++) {
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scan_line[j * 3] = 255 - i;
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scan_line[(j * 3) + 1] = 255;
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scan_line[(j * 3) + 2] = 255;
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}
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for (j = 375; j < 450; j++) {
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scan_line[j * 3] = 255;
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scan_line[(j * 3) + 1] = 255 - i;
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scan_line[(j * 3) + 2] = 255;
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}
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for (j = 450; j < 525; j++) {
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scan_line[j * 3] = 255;
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scan_line[(j * 3) + 1] = 255;
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scan_line[(j * 3) + 2] = 255 - i;
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}
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TIFFWriteScanline(tif, scan_line, i, 0);
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}
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for (i = 255; i < 512; i++) {
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for (j = 0; j < 75; j++) {
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scan_line[j * 3] = i;
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scan_line[(j * 3) + 1] = 0;
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scan_line[(j * 3) + 2] = 0;
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}
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for (j = 75; j < 150; j++) {
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scan_line[j * 3] = 0;
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scan_line[(j * 3) + 1] = i;
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scan_line[(j * 3) + 2] = 0;
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}
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for (j = 150; j < 225; j++) {
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scan_line[j * 3] = 0;
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scan_line[(j * 3) + 1] = 0;
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scan_line[(j * 3) + 2] = i;
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}
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for (j = 225; j < 300; j++) {
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scan_line[j * 3] = (i - 1) / 2;
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scan_line[(j * 3) + 1] = (i - 1) / 2;
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scan_line[(j * 3) + 2] = (i - 1) / 2;
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}
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for (j = 300; j < 375; j++) {
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scan_line[j * 3] = 0;
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scan_line[(j * 3) + 1] = i;
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scan_line[(j * 3) + 2] = i;
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}
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for (j = 375; j < 450; j++) {
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scan_line[j * 3] = i;
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scan_line[(j * 3) + 1] = 0;
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scan_line[(j * 3) + 2] = i;
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}
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for (j = 450; j < 525; j++) {
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scan_line[j * 3] = i;
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scan_line[(j * 3) + 1] = i;
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scan_line[(j * 3) + 2] = 0;
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}
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TIFFWriteScanline(tif, scan_line, i, 0);
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}
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free(scan_line);
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TIFFClose(tif);
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exit(0);
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}
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void
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Usage()
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{
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fprintf(stderr, "Usage: %s -gamma gamma tiff-image\n", programName);
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exit(0);
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}
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/*
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* Local Variables:
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* mode: c
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* c-basic-offset: 8
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* fill-column: 78
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* End:
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*/
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