1 /* 2 * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com> 3 * This file is part of FFmpeg. 4 * 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. 9 * 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. 14 * 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 18 */ 19 20 #ifndef AVFILTER_COLORSPACE_H 21 #define AVFILTER_COLORSPACE_H 22 23 #include "libavutil/common.h" 24 #include "libavutil/frame.h" 25 26 #define REFERENCE_WHITE 100.0f 27 28 struct LumaCoefficients { 29 double cr, cg, cb; 30 }; 31 32 struct PrimaryCoefficients { 33 double xr, yr, xg, yg, xb, yb; 34 }; 35 36 struct WhitepointCoefficients { 37 double xw, yw; 38 }; 39 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]); 46 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]); 50 51 double ff_determine_signal_peak(AVFrame *in); 52 void ff_update_hdr_metadata(AVFrame *in, double peak); 53 54 #endif 55