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/**
* libgamma -- Display server abstraction layer for gamma ramp adjustments
* Copyright (C) 2014 Mattias Andrée (maandree@member.fsf.org)
*
* This library 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 library 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 library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LIBGAMMA_FAKE_QUARTZ_CG_H
#define LIBGAMMA_FAKE_QUARTZ_CG_H
#ifndef FAKE_LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS
# error Including fake-quartz-cg.h without FAKE_LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS
#endif
#ifndef __GCC__
# define __attribute__(x)
#endif
/* This header file contains some capabilities of
* <CoreGraphics/CGDirectDisplay.h> and <CoreGraphics/CGError.h>,
* and can be used modify gamma ramps without Mac OS X and Quartz
* but with its API.
*
* The content of this file is based on the documentation found on:
*
* https://developer.apple.com/library/mac/documentation/GraphicsImaging/Reference/Quartz_Services_Ref/Reference/reference.html
*
* https://developer.apple.com/library/mac/documentation/CoreGraphics/Reference/CoreGraphicsConstantsRef/Reference/reference.html#//apple_ref/c/tdef/CGError */
#include <stdint.h>
typedef int32_t CGError;
#define kCGErrorSuccess 0
typedef float CGGammaValue;
typedef uint32_t CGDirectDisplayID;
CGError CGGetOnlineDisplayList(uint32_t max_size,
CGDirectDisplayID* restrict displays_out, uint32_t* restrict count_out);
CGError CGSetDisplayTransferByTable(CGDirectDisplayID display, uint32_t gamma_size, const CGGammaValue* red,
const CGGammaValue* green, const CGGammaValue* blue);
CGError CGGetDisplayTransferByTable(CGDirectDisplayID display, uint32_t gamma_size,
CGGammaValue* restrict red, CGGammaValue* restrict green,
CGGammaValue* restrict blue, uint32_t* restrict gamma_size_out);
void CGDisplayRestoreColorSyncSettings(void);
uint32_t CGDisplayGammaTableCapacity(CGDirectDisplayID display) __attribute__((const));
/* The follow part most only be used when this module is used,
* it cannot be used when the real CoreGraphics is used.
* CoreGraphics does not have this function, it is added so
* that there is a way to cleanly close the X connection
* and free resources needed by this module. */
void close_fake_quartz_cg(void);
#ifndef __GCC__
# undef __attribute__
#endif
#endif
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