/** * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef BLUESHIFT_VIDMODE_C_H #define BLUESHIFT_VIDMODE_C_H #include <stdlib.h> #include <stdio.h> #include <inttypes.h> #include <X11/Xlib.h> #include <X11/extensions/xf86vmode.h> /** * Start stage of colour curve control * * @param use_screen The screen to use * @param display The display to use, `NULL` for the current one * @return Zero on error, otherwise the size of colours curves */ int blueshift_vidmode_open(int use_screen, char* display); /** * Gets the current colour curves * * @param r_gamma Storage location for the red colour curve * @param g_gamma Storage location for the green colour curve * @param b_gamma Storage location for the blue colour curve * @return Zero on success */ int blueshift_vidmode_read(uint16_t* r_gamma, uint16_t* g_gamma, uint16_t* b_gamma); /** * Apply stage of colour curve control * * @param r_curve The red colour curve * @param g_curve The green colour curve * @param b_curve The blue colour curve * @return Zero on success */ int blueshift_vidmode_apply(uint16_t* r_curve, uint16_t* g_curve, uint16_t* b_curve); /** * Resource freeing stage of colour curve control */ void blueshift_vidmode_close(void); #endif