1 /* Copyright 2017 Jason Williams
3 * This program is free software: you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation, either version 2 of the License, or
6 * (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 #include "led_tables.h"
22 RGB hsv_to_rgb( HSV hsv )
25 uint8_t region, p, q, t;
26 uint16_t h, s, v, remainder;
41 remainder = (h - (region * 43)) * 6;
43 p = (v * (255 - s)) >> 8;
44 q = (v * (255 - ((s * remainder) >> 8))) >> 8;
45 t = (v * (255 - ((s * (255 - remainder)) >> 8))) >> 8;
81 rgb.r = pgm_read_byte( &CIE1931_CURVE[rgb.r] );
82 rgb.g = pgm_read_byte( &CIE1931_CURVE[rgb.g] );
83 rgb.b = pgm_read_byte( &CIE1931_CURVE[rgb.b] );