OFColorSpace.h

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/*
 * Copyright (c) 2008-2026 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3.0 only,
 * as published by the Free Software Foundation.
 *
 * 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 Lesser General Public License
 * version 3.0 for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3.0 along with this program. If not, see
 * <https://www.gnu.org/licenses/>.
 */
 
#import "OFObject.h"
 
OF_ASSUME_NONNULL_BEGIN

 
@class OFColorSpace;
@class OFMatrix4x4;

typedef void (*OFColorSpaceTransferFunction)(OFVector4D *vectors,
    size_t count);

@interface OFColorSpace: OFObject
{
    OFColorSpaceTransferFunction _EOTF, _OETF;
    OFMatrix4x4 *_RGBToXYZMatrix, *_XYZToRGBMatrix;
    bool _linear;
    OF_RESERVE_IVARS(OFColorSpace, 4)
}
 
#ifdef OF_HAVE_CLASS_PROPERTIES
@property (class, readonly, retain, nonatomic) OFColorSpace *sRGBColorSpace;
@property (class, readonly, retain, nonatomic)
    OFColorSpace *linearSRGBColorSpace;
@property (class, readonly, retain, nonatomic) OFColorSpace *BT709ColorSpace;
@property (class, readonly, retain, nonatomic)
    OFColorSpace *displayP3ColorSpace;
@property (class, readonly, retain, nonatomic)
    OFColorSpace *linearDisplayP3ColorSpace;
@property (class, readonly, retain, nonatomic) OFColorSpace *BT2020ColorSpace;
@property (class, readonly, retain, nonatomic)
    OFColorSpace *linearBT2020ColorSpace;
@property (class, readonly, retain, nonatomic) OFColorSpace *adobeRGBColorSpace;
@property (class, readonly, retain, nonatomic)
    OFColorSpace *linearAdobeRGBColorSpace;
#endif

@property (readonly, nonatomic) OFColorSpaceTransferFunction EOTF;

@property (readonly, nonatomic) OFColorSpaceTransferFunction OETF;

@property (readonly, retain, nonatomic) OFMatrix4x4 *RGBToXYZMatrix;

@property (readonly, retain, nonatomic) OFMatrix4x4 *XYZToRGBMatrix;

@property (readonly, nonatomic, getter=isLinear) bool linear;

+ (instancetype)colorSpaceWithEOTF: (OFColorSpaceTransferFunction)EOTF
                  OETF: (OFColorSpaceTransferFunction)OETF
            RGBToXYZMatrix: (OFMatrix4x4 *)RGBToXYZMatrix
            XYZToRGBMatrix: (OFMatrix4x4 *)XYZToRGBMatrix
                linear: (bool)linear;

+ (OFColorSpace *)sRGBColorSpace;

+ (OFColorSpace *)linearSRGBColorSpace;

+ (OFColorSpace *)BT709ColorSpace;

+ (OFColorSpace *)displayP3ColorSpace;

+ (OFColorSpace *)linearDisplayP3ColorSpace;

+ (OFColorSpace *)BT2020ColorSpace;

+ (OFColorSpace *)linearBT2020ColorSpace;

+ (OFColorSpace *)adobeRGBColorSpace;

+ (OFColorSpace *)linearAdobeRGBColorSpace;

- (instancetype)initWithEOTF: (OFColorSpaceTransferFunction)EOTF
            OETF: (OFColorSpaceTransferFunction)OETF
          RGBToXYZMatrix: (OFMatrix4x4 *)RGBToXYZMatrix
          XYZToRGBMatrix: (OFMatrix4x4 *)XYZToRGBMatrix
              linear: (bool)linear;
@end
 
OF_ASSUME_NONNULL_END