/* $Id: tiff-rgb.c,v 1.4 2010-06-08 18:55:15 bfriesen Exp $ */

/*

* 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:

*/