/**
* Copyright © 2016 Mattias Andrée <maandree@member.fsf.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "libred.h"
#include "macros.h"
#include <stdio.h>
#include <math.h>
#include <sys/stat.h>
/**
* The number of measured temperatures.
*/
#define TEMPERATURES ((LIBRED_HIGHEST_TEMPERATURE - LIBRED_LOWEST_TEMPERATURE) / LIBRED_DELTA_TEMPERATURE + 1)
#define LIBRED_COMPILING_PARSER
#include "blackbody.c"
/**
* Create the lookup table of temperatures.
*
* Standard input should be the file '10deg',
* standard output should be the table file
* and must be a regular file.
*
* @param argc Should be 1.
* @param argv Should only contain the name of the process.
* @return 0 on success, 1 on error.
*/
int main(int argc, char *argv[])
{
#define x (xyrgb[0])
#define y (xyrgb[1])
#define r (xyrgb[2])
#define g (xyrgb[3])
#define b (xyrgb[4])
double xyrgb[5];
struct stat attr;
long int temp = LIBRED_LOWEST_TEMPERATURE;
for (; fscanf(stdin, "%lf %lf\n", &x, &y) == 2; temp += LIBRED_DELTA_TEMPERATURE)
{
(temp == 6500) ? (r = g = b = 1.0) : ciexyy_to_srgb(x, y, 1.0, &r, &g, &b);
xwrite(STDOUT_FILENO, xyrgb, sizeof(xyrgb));
}
xwrite(STDOUT_FILENO, xyrgb, sizeof(xyrgb)); /* sugar */
t (fstat(STDOUT_FILENO, &attr));
return ((size_t)(attr.st_size) != (TEMPERATURES + 1) * 5 * sizeof(double));
fail:
return perror(argc ? *argv : "parse_10deg"), 1;
}
