From b841ac15a3a39532c6f48d921d0817bd61b80f55 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 2 Jan 2016 07:19:16 +0100 Subject: blackbody MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/blackbody.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 src/blackbody.h (limited to 'src/blackbody.h') diff --git a/src/blackbody.h b/src/blackbody.h new file mode 100644 index 0000000..832305c --- /dev/null +++ b/src/blackbody.h @@ -0,0 +1,38 @@ +/** + * Copyright © 2016 Mattias Andrée + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + + +/** + * Get the [0, 1] sRGB values of a colour temperature. + * + * @param fd File descriptor for the colour table. + * @param temp The desired colour temperature. + * @param r Output parameter for the “red” value. + * @param g Output parameter for the green value. + * @param b Output parameter for the blue value. + * @return 0 on succeess, -1 on error. + * + * @throws 0 The file did not have the expected size. + * @throws EDOM The selected temperature is below 1000 K. + */ +int get_colour(int fd, int temp, double *r, double *g, double *b); + -- cgit v1.2.3-70-g09d2