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