File indexing completed on 2024-04-28 04:52:21 

0001 #pragma once
0002 /*
0003     SPDX-FileCopyrightText: 2020 Simon Andreas Eugster <simon.eu@gmail.com>
0004     This file is part of kdenlive. See www.kdenlive.org.
0005     SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
0006 */
0007 /**
0008  * ITU-R Recommendation for luminance calculation.
0009  * See http://www.poynton.com/ColorFAQ.html for details.
0010  */
0011 enum class ITURec {
0012     Rec_601, Rec_709
0013 };
0014 
0015 // CIE 601 luminance factors
0016 constexpr float REC_601_R = .299f;
0017 constexpr float REC_601_G = .587f;
0018 constexpr float REC_601_B = .114f;
0019 
0020 // CIE 709 luminance factors
0021 constexpr float REC_709_R = .2125f;
0022 constexpr float REC_709_G = .7154f;
0023 constexpr float REC_709_B = .0721f;