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39
40#ifndef QCOLORSPACE_P_H
41#define QCOLORSPACE_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include "qcolorspace.h"
55#include "qcolormatrix_p.h"
56#include "qcolortrc_p.h"
57#include "qcolortrclut_p.h"
58
59#include <QtCore/qmutex.h>
60#include <QtCore/qpoint.h>
61#include <QtCore/qshareddata.h>
62
63QT_BEGIN_NAMESPACE
64
65class Q_GUI_EXPORT QColorSpacePrimaries
66{
67public:
68 QColorSpacePrimaries() = default;
69 QColorSpacePrimaries(QColorSpace::Gamut gamut);
70 QColorSpacePrimaries(QPointF whitePoint,
71 QPointF redPoint,
72 QPointF greenPoint,
73 QPointF bluePoint)
74 : whitePoint(whitePoint)
75 , redPoint(redPoint)
76 , greenPoint(greenPoint)
77 , bluePoint(bluePoint)
78 { }
79
80 QColorMatrix toXyzMatrix() const;
81 bool areValid() const;
82
83 QPointF whitePoint;
84 QPointF redPoint;
85 QPointF greenPoint;
86 QPointF bluePoint;
87};
88
89class QColorSpacePrivate : public QSharedData
90{
91public:
92 QColorSpacePrivate();
93 QColorSpacePrivate(QColorSpace::ColorSpaceId colorSpaceId);
94 QColorSpacePrivate(QColorSpace::Gamut gamut, QColorSpace::TransferFunction fun, float gamma);
95 QColorSpacePrivate(const QColorSpacePrimaries &primaries, QColorSpace::TransferFunction fun, float gamma);
96 QColorSpacePrivate(const QColorSpacePrivate &other) = default;
97
98 static QColorSpacePrivate *getWritable(QColorSpace &colorSpace)
99 {
100 colorSpace.d_ptr.detach();
101 return colorSpace.d_ptr.data();
102 }
103
104 static const QColorSpacePrivate *get(const QColorSpace &colorSpace)
105 {
106 return colorSpace.d_ptr.data();
107 }
108
109 void initialize();
110 void setToXyzMatrix();
111 void setTransferFunction();
112 bool identifyColorSpace();
113 QColorTransform transformationToColorSpace(const QColorSpacePrivate *out) const;
114
115 QColorSpace::ColorSpaceId id;
116 QColorSpace::Gamut gamut;
117 QColorSpace::TransferFunction transferFunction;
118 float gamma;
119 QColorVector whitePoint;
120
121 QColorTrc trc[3];
122 QColorMatrix toXyz;
123
124 QString description;
125 QByteArray iccProfile;
126
127 static QBasicMutex s_lutWriteLock;
128 struct LUT {
129 LUT() = default;
130 ~LUT() = default;
131 LUT(const LUT &other)
132 {
133 if (other.generated.loadAcquire()) {
134 table[0] = other.table[0];
135 table[1] = other.table[1];
136 table[2] = other.table[2];
137 generated.storeRelaxed(1);
138 }
139 }
140 QSharedPointer<QColorTrcLut> &operator[](int i) { return table[i]; }
141 const QSharedPointer<QColorTrcLut> &operator[](int i) const { return table[i]; }
142 QSharedPointer<QColorTrcLut> table[3];
143 QAtomicInt generated;
144 } mutable lut;
145};
146
147QT_END_NAMESPACE
148
149#endif // QCOLORSPACE_P_H
150