2 * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com>
3 * This file is part of FFmpeg.
5 * FFmpeg is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * FFmpeg is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with FFmpeg; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 #ifndef AVFILTER_COLORSPACE_H
21 #define AVFILTER_COLORSPACE_H
23 #include "libavutil/common.h"
24 #include "libavutil/frame.h"
26 #define REFERENCE_WHITE 100.0f
28 struct LumaCoefficients {
32 struct PrimaryCoefficients {
33 double xr, yr, xg, yg, xb, yb;
36 struct WhitepointCoefficients {
40 void ff_matrix_invert_3x3(const double in[3][3], double out[3][3]);
41 void ff_matrix_mul_3x3(double dst[3][3],
42 const double src1[3][3], const double src2[3][3]);
43 void ff_fill_rgb2xyz_table(const struct PrimaryCoefficients *coeffs,
44 const struct WhitepointCoefficients *wp,
45 double rgb2xyz[3][3]);
47 const struct LumaCoefficients *ff_get_luma_coefficients(enum AVColorSpace csp);
48 void ff_fill_rgb2yuv_table(const struct LumaCoefficients *coeffs,
49 double rgb2yuv[3][3]);
51 double ff_determine_signal_peak(AVFrame *in);
52 void ff_update_hdr_metadata(AVFrame *in, double peak);