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/*
* 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]);
const struct LumaCoefficients *ff_get_luma_coefficients(enum AVColorSpace csp);
void ff_fill_rgb2yuv_table(const struct LumaCoefficients *coeffs,
double rgb2yuv[3][3]);
double ff_determine_signal_peak(AVFrame *in);
void ff_update_hdr_metadata(AVFrame *in, double peak);
#endif
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