summaryrefslogtreecommitdiffstats
path: root/src/multimedia/camera/qcameraexposure.h
blob: 31be787194234b9767bf5b7412a24a16f33b7cb5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QCAMERAEXPOSURE_H
#define QCAMERAEXPOSURE_H

#include <QtMultimedia/qmediaobject.h>
#include <QtMultimedia/qmediaenumdebug.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE


class QCamera;
class QCameraExposurePrivate;

class Q_MULTIMEDIA_EXPORT QCameraExposure : public QObject
{
    Q_OBJECT
    Q_PROPERTY(qreal aperture READ aperture NOTIFY apertureChanged)
    Q_PROPERTY(qreal shutterSpeed READ shutterSpeed NOTIFY shutterSpeedChanged)
    Q_PROPERTY(int isoSensitivity READ isoSensitivity NOTIFY isoSensitivityChanged)
    Q_PROPERTY(qreal exposureCompensation READ exposureCompensation WRITE setExposureCompensation NOTIFY exposureCompensationChanged)
    Q_PROPERTY(bool flashReady READ isFlashReady NOTIFY flashReady)
    Q_PROPERTY(QCameraExposure::FlashModes flashMode READ flashMode WRITE setFlashMode)
    Q_PROPERTY(QCameraExposure::ExposureMode exposureMode READ exposureMode WRITE setExposureMode)
    Q_PROPERTY(QCameraExposure::MeteringMode meteringMode READ meteringMode WRITE setMeteringMode)

    Q_ENUMS(FlashMode)
    Q_ENUMS(ExposureMode)
    Q_ENUMS(MeteringMode)
public:
    enum FlashMode {
        FlashAuto = 0x1,
        FlashOff = 0x2,
        FlashOn = 0x4,
        FlashRedEyeReduction  = 0x8,
        FlashFill = 0x10,
        FlashTorch = 0x20,
        FlashVideoLight = 0x40,
        FlashSlowSyncFrontCurtain = 0x80,
        FlashSlowSyncRearCurtain = 0x100,
        FlashManual = 0x200
    };
    Q_DECLARE_FLAGS(FlashModes, FlashMode)

    enum ExposureMode {
        ExposureAuto = 0,
        ExposureManual = 1,
        ExposurePortrait = 2,
        ExposureNight = 3,
        ExposureBacklight = 4,
        ExposureSpotlight = 5,
        ExposureSports = 6,
        ExposureSnow = 7,
        ExposureBeach = 8,
        ExposureLargeAperture = 9,
        ExposureSmallAperture = 10,
        ExposureModeVendor = 1000
    };

    enum MeteringMode {
        MeteringMatrix = 1,
        MeteringAverage = 2,
        MeteringSpot = 3
    };

    bool isAvailable() const;

    FlashModes flashMode() const;
    bool isFlashModeSupported(FlashModes mode) const;
    bool isFlashReady() const;

    ExposureMode exposureMode() const;
    bool isExposureModeSupported(ExposureMode mode) const;

    qreal exposureCompensation() const;

    MeteringMode meteringMode() const;
    bool isMeteringModeSupported(MeteringMode mode) const;

    QPointF spotMeteringPoint() const;
    void setSpotMeteringPoint(const QPointF &point);

    int isoSensitivity() const;
    qreal aperture() const;
    qreal shutterSpeed() const;

    int requestedIsoSensitivity() const;
    qreal requestedAperture() const;
    qreal requestedShutterSpeed() const;

    QList<int> supportedIsoSensitivities(bool *continuous = 0) const;
    QList<qreal> supportedApertures(bool * continuous = 0) const;
    QList<qreal> supportedShutterSpeeds(bool *continuous = 0) const;

public Q_SLOTS:
    void setFlashMode(FlashModes mode);
    void setExposureMode(ExposureMode mode);
    void setMeteringMode(MeteringMode mode);

    void setExposureCompensation(qreal ev);

    void setManualIsoSensitivity(int iso);
    void setAutoIsoSensitivity();

    void setManualAperture(qreal aperture);
    void setAutoAperture();

    void setManualShutterSpeed(qreal seconds);
    void setAutoShutterSpeed();

Q_SIGNALS:
    void flashReady(bool);

    void apertureChanged(qreal);
    void apertureRangeChanged();
    void shutterSpeedChanged(qreal);
    void shutterSpeedRangeChanged();
    void isoSensitivityChanged(int);
    void exposureCompensationChanged(qreal);

private:
    friend class QCamera;
    explicit QCameraExposure(QCamera *parent = 0);
    virtual ~QCameraExposure();

    Q_DISABLE_COPY(QCameraExposure)
    Q_DECLARE_PRIVATE(QCameraExposure)
    Q_PRIVATE_SLOT(d_func(), void _q_exposureParameterChanged(int))
    Q_PRIVATE_SLOT(d_func(), void _q_exposureParameterRangeChanged(int))
    QCameraExposurePrivate *d_ptr;
};

Q_DECLARE_OPERATORS_FOR_FLAGS(QCameraExposure::FlashModes)

QT_END_NAMESPACE

Q_DECLARE_METATYPE(QCameraExposure::ExposureMode)
Q_DECLARE_METATYPE(QCameraExposure::FlashModes)
Q_DECLARE_METATYPE(QCameraExposure::MeteringMode)

Q_MEDIA_ENUM_DEBUG(QCameraExposure, ExposureMode)
Q_MEDIA_ENUM_DEBUG(QCameraExposure, FlashMode)
Q_MEDIA_ENUM_DEBUG(QCameraExposure, MeteringMode)

QT_END_HEADER

#endif // QCAMERAEXPOSURE_H