/*
  * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com>
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef AVFILTER_COLORSPACE_H
 #define AVFILTER_COLORSPACE_H
 
 #include "libavutil/common.h"

 #include "libavutil/frame.h"
 
 #define REFERENCE_WHITE 100.0f

 
 struct LumaCoefficients {
     double cr, cg, cb;
 };
 
 struct PrimaryCoefficients {
     double xr, yr, xg, yg, xb, yb;
 };
 
 struct WhitepointCoefficients {
     double xw, yw;
 };
 

 void ff_matrix_invert_3x3(const double in[3][3], double out[3][3]);
 void ff_matrix_mul_3x3(double dst[3][3],
                const double src1[3][3], const double src2[3][3]);
 void ff_fill_rgb2xyz_table(const struct PrimaryCoefficients *coeffs,
                            const struct WhitepointCoefficients *wp,
                            double rgb2xyz[3][3]);

 
 double ff_determine_signal_peak(AVFrame *in);

 void ff_update_hdr_metadata(AVFrame *in, double peak);

 #endif