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/**
* 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/>.
*/
#include <stdio.h>
#include <stdlib.h>
#ifndef WINVER
# define WINVER 0x0500
#endif
#ifdef FAKE_W32GDI
# include "fake_w32gdi.h"
#else
# include <windows.h>
# include <wingdi.h>
#endif
/**
* The size of gamma ramps
*/
#define GAMMA_RAMP_SIZE 256
/**
* Start stage of colour curve control
*
* @return Zero on success
*/
int blueshift_w32gdi_open(void);
/**
* Get the number of CRTC:s on the system
*
* @return The number of CRTC:s on the system
*/
int blueshift_w32gdi_crtc_count(void);
/**
* Gets the current colour curves
*
* @param use_crtc The CRTC to use
* @return {the size of the each curve, *the red curve,
* *the green curve, *the blue curve},
* needs to be free:d. `NULL` on error.
*/
uint16_t* blueshift_w32gdi_read(int use_crtc);
/**
* Apply stage of colour curve control
*
* @param use_crtc The CRTC to use, -1 for all
* @param rgb_curve The concatenation of the red, the green and the blue colour curves
* @return Zero on success
*/
int blueshift_w32gdi_apply(int use_crtc, uint16_t* rgb_curves);
/**
* Resource freeing stage of colour curve control
*/
void blueshift_w32gdi_close(void);
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