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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_AUTOTEST_EXPORT QColorSpacePrimaries
66{
67public:
68 QColorSpacePrimaries() = default;
69 QColorSpacePrimaries(QColorSpace::Primaries primaries);
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::NamedColorSpace namedColorSpace);
94 QColorSpacePrivate(QColorSpace::Primaries primaries, QColorSpace::TransferFunction fun, float gamma);
95 QColorSpacePrivate(const QColorSpacePrimaries &primaries, QColorSpace::TransferFunction fun, float gamma);
96 QColorSpacePrivate(const QColorSpacePrivate &other) = default;
97
98 static const QColorSpacePrivate *get(const QColorSpace &colorSpace)
99 {
100 return colorSpace.d_ptr.get();
101 }
102
103 static QColorSpacePrivate *get(QColorSpace &colorSpace)
104 {
105 return colorSpace.d_ptr.get();
106 }
107
108 void initialize();
109 void setToXyzMatrix();
110 void setTransferFunction();
111 void identifyColorSpace();
112 QColorTransform transformationToColorSpace(const QColorSpacePrivate *out) const;
113
114 static constexpr QColorSpace::NamedColorSpace Unknown = QColorSpace::NamedColorSpace(0);
115 QColorSpace::NamedColorSpace namedColorSpace = Unknown;
116
117 QColorSpace::Primaries primaries = QColorSpace::Primaries::Custom;
118 QColorSpace::TransferFunction transferFunction = QColorSpace::TransferFunction::Custom;
119 float gamma = 0.0f;
120 QColorVector whitePoint;
121
122 QColorTrc trc[3];
123 QColorMatrix toXyz;
124
125 QString description;
126 QByteArray iccProfile;
127
128 static QBasicMutex s_lutWriteLock;
129 struct LUT {
130 LUT() = default;
131 ~LUT() = default;
132 LUT(const LUT &other)
133 {
134 if (other.generated.loadAcquire()) {
135 table[0] = other.table[0];
136 table[1] = other.table[1];
137 table[2] = other.table[2];
138 generated.storeRelaxed(1);
139 }
140 }
141 QSharedPointer<QColorTrcLut> &operator[](int i) { return table[i]; }
142 const QSharedPointer<QColorTrcLut> &operator[](int i) const { return table[i]; }
143 QSharedPointer<QColorTrcLut> table[3];
144 QAtomicInt generated;
145 } mutable lut;
146};
147
148QT_END_NAMESPACE
149
150#endif // QCOLORSPACE_P_H
151