summaryrefslogtreecommitdiff
path: root/src/multimedia/camera/qcameraexposure.cpp
blob: 5bbce4465abf999efe210e8658ad6419b5306c56 (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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qcameraexposure.h"
#include "qmediaobject_p.h"

#include <qcamera.h>
#include <qcameraexposurecontrol.h>
#include <qcameraflashcontrol.h>

#include <QtCore/QMetaObject>
#include <QtCore/QDebug>

QT_BEGIN_NAMESPACE

/*!
    \class QCameraExposure


    \brief The QCameraExposure class provides interface for exposure related camera settings.

    \inmodule QtMultimedia
    \ingroup multimedia
    \ingroup multimedia_camera

*/

//#define DEBUG_EXPOSURE_CHANGES 1

static void qRegisterCameraExposureMetaTypes()
{
    qRegisterMetaType<QCameraExposure::ExposureMode>("QCameraExposure::ExposureMode");
    qRegisterMetaType<QCameraExposure::FlashModes>("QCameraExposure::FlashModes");
    qRegisterMetaType<QCameraExposure::MeteringMode>("QCameraExposure::MeteringMode");
}

Q_CONSTRUCTOR_FUNCTION(qRegisterCameraExposureMetaTypes)


class QCameraExposurePrivate
{
    Q_DECLARE_NON_CONST_PUBLIC(QCameraExposure)
public:
    void initControls();
    QCameraExposure *q_ptr;

    template<typename T> T actualExposureParameter(QCameraExposureControl::ExposureParameter parameter, const T &defaultValue) const;
    template<typename T> T requestedExposureParameter(QCameraExposureControl::ExposureParameter parameter, const T &defaultValue) const;
    template<typename T> void setExposureParameter(QCameraExposureControl::ExposureParameter parameter, const T &value);
    void resetExposureParameter(QCameraExposureControl::ExposureParameter parameter);

    QCamera *camera;
    QCameraExposureControl *exposureControl;
    QCameraFlashControl *flashControl;

    void _q_exposureParameterChanged(int parameter);
    void _q_exposureParameterRangeChanged(int parameter);
};

void QCameraExposurePrivate::initControls()
{
    Q_Q(QCameraExposure);

    QMediaService *service = camera->service();
    exposureControl = 0;
    flashControl = 0;
    if (service) {
        exposureControl = qobject_cast<QCameraExposureControl *>(service->requestControl(QCameraExposureControl_iid));
        flashControl = qobject_cast<QCameraFlashControl *>(service->requestControl(QCameraFlashControl_iid));
    }
    if (exposureControl) {
        q->connect(exposureControl, SIGNAL(actualValueChanged(int)),
                   q, SLOT(_q_exposureParameterChanged(int)));
        q->connect(exposureControl, SIGNAL(parameterRangeChanged(int)),
                   q, SLOT(_q_exposureParameterRangeChanged(int)));
    }

    if (flashControl)
        q->connect(flashControl, SIGNAL(flashReady(bool)), q, SIGNAL(flashReady(bool)));
}

template<typename T>
T QCameraExposurePrivate::actualExposureParameter(QCameraExposureControl::ExposureParameter parameter, const T &defaultValue) const
{
    QVariant value = exposureControl ? exposureControl->actualValue(parameter) : QVariant();

    return value.isValid() ? value.value<T>() : defaultValue;
}

template<typename T>
T QCameraExposurePrivate::requestedExposureParameter(QCameraExposureControl::ExposureParameter parameter, const T &defaultValue) const
{
    QVariant value = exposureControl ? exposureControl->requestedValue(parameter) : QVariant();

    return value.isValid() ? value.value<T>() : defaultValue;
}

template<typename T>
void QCameraExposurePrivate::setExposureParameter(QCameraExposureControl::ExposureParameter parameter, const T &value)
{
    if (exposureControl)
        exposureControl->setValue(parameter, QVariant::fromValue<T>(value));
}

void QCameraExposurePrivate::resetExposureParameter(QCameraExposureControl::ExposureParameter parameter)
{
    if (exposureControl)
        exposureControl->setValue(parameter, QVariant());
}


void QCameraExposurePrivate::_q_exposureParameterChanged(int parameter)
{
    Q_Q(QCameraExposure);

#if DEBUG_EXPOSURE_CHANGES
    qDebug() << "Exposure parameter changed:"
             << QCameraExposureControl::ExposureParameter(parameter)
             << exposureControl->actualValue(QCameraExposureControl::ExposureParameter(parameter));
#endif

    switch (parameter) {
    case QCameraExposureControl::ISO:
        emit q->isoSensitivityChanged(q->isoSensitivity());
        break;
    case QCameraExposureControl::Aperture:
        emit q->apertureChanged(q->aperture());
        break;
    case QCameraExposureControl::ShutterSpeed:
        emit q->shutterSpeedChanged(q->shutterSpeed());
        break;
    case QCameraExposureControl::ExposureCompensation:
        emit q->exposureCompensationChanged(q->exposureCompensation());
        break;
    }
}

void QCameraExposurePrivate::_q_exposureParameterRangeChanged(int parameter)
{
    Q_Q(QCameraExposure);

    switch (parameter) {
    case QCameraExposureControl::Aperture:
        emit q->apertureRangeChanged();
        break;
    case QCameraExposureControl::ShutterSpeed:
        emit q->shutterSpeedRangeChanged();
        break;
    }
}

/*!
    Construct a QCameraExposure from service \a provider and \a parent.
*/

QCameraExposure::QCameraExposure(QCamera *parent):
    QObject(parent), d_ptr(new QCameraExposurePrivate)
{
    Q_D(QCameraExposure);
    d->camera = parent;
    d->q_ptr = this;
    d->initControls();
}


/*!
    Destroys the camera exposure object.
*/

QCameraExposure::~QCameraExposure()
{
    Q_D(QCameraExposure);
    if (d->exposureControl)
        d->camera->service()->releaseControl(d->exposureControl);

    delete d;
}

/*!
    Returns true if exposure settings are supported by this camera.
*/
bool QCameraExposure::isAvailable() const
{
    return d_func()->exposureControl != 0;
}


/*!
  \property QCameraExposure::flashMode
  \brief The flash mode being used.

  Usually the single QCameraExposure::FlashMode flag is used,
  but some non conflicting flags combination are also allowed,
  like QCameraExposure::FlashManual | QCameraExposure::FlashSlowSyncRearCurtain.

  \sa QCameraExposure::isFlashModeSupported(), QCameraExposure::isFlashReady()
*/

QCameraExposure::FlashModes QCameraExposure::flashMode() const
{
    return d_func()->flashControl ? d_func()->flashControl->flashMode() : QCameraExposure::FlashOff;
}

void QCameraExposure::setFlashMode(QCameraExposure::FlashModes mode)
{
    if (d_func()->flashControl)
        d_func()->flashControl->setFlashMode(mode);
}

/*!
    Returns true if the flash \a mode is supported.
*/

bool QCameraExposure::isFlashModeSupported(QCameraExposure::FlashModes mode) const
{
    return d_func()->flashControl ? d_func()->flashControl->isFlashModeSupported(mode) : false;
}

/*!
    Returns true if flash is charged.
*/

bool QCameraExposure::isFlashReady() const
{
    return d_func()->flashControl ? d_func()->flashControl->isFlashReady() : false;
}

/*!
  \property QCameraExposure::exposureMode
  \brief The exposure mode being used.

  \sa QCameraExposure::isExposureModeSupported()
*/

QCameraExposure::ExposureMode QCameraExposure::exposureMode() const
{
    return d_func()->actualExposureParameter<QCameraExposure::ExposureMode>(QCameraExposureControl::ExposureMode, QCameraExposure::ExposureAuto);
}

void QCameraExposure::setExposureMode(QCameraExposure::ExposureMode mode)
{
    d_func()->setExposureParameter<QCameraExposure::ExposureMode>(QCameraExposureControl::ExposureMode, mode);
}

/*!
    Returns true if the exposure \a mode is supported.
*/

bool QCameraExposure::isExposureModeSupported(QCameraExposure::ExposureMode mode) const
{
    if (!d_func()->exposureControl)
        return false;

    bool continuous = false;
    return d_func()->exposureControl->supportedParameterRange(QCameraExposureControl::ExposureMode, &continuous)
            .contains(QVariant::fromValue<QCameraExposure::ExposureMode>(mode));
}

/*!
  \property QCameraExposure::exposureCompensation
  \brief Exposure compensation in EV units.

  Exposure compensation property allows to adjust the automatically calculated exposure.
*/

qreal QCameraExposure::exposureCompensation() const
{
    return d_func()->actualExposureParameter<qreal>(QCameraExposureControl::ExposureCompensation, 0.0);
}

void QCameraExposure::setExposureCompensation(qreal ev)
{
    d_func()->setExposureParameter<qreal>(QCameraExposureControl::ExposureCompensation, ev);
}

/*!
  \property QCameraExposure::meteringMode
  \brief The metering mode being used.

  \sa QCameraExposure::isMeteringModeSupported()
*/

QCameraExposure::MeteringMode QCameraExposure::meteringMode() const
{
    return d_func()->actualExposureParameter<QCameraExposure::MeteringMode>(QCameraExposureControl::MeteringMode, QCameraExposure::MeteringMatrix);
}

void QCameraExposure::setMeteringMode(QCameraExposure::MeteringMode mode)
{
    d_func()->setExposureParameter<QCameraExposure::MeteringMode>(QCameraExposureControl::MeteringMode, mode);
}

/*!
  \fn QCameraExposure::spotMeteringPoint() const

  When supported, the spot metering point is the (normalized) position of the point of the image
  where exposure metering will be performed.  This is typically used to indicate an
  "interesting" area of the image that should be exposed properly.

  The coordinates are relative frame coordinates:
  QPointF(0,0) points to the left top frame point, QPointF(0.5,0.5) points to the frame center,
  which is typically the default spot metering point.

  The spot metering point is only used with spot metering mode.

  \sa setSpotMeteringPoint()
*/

QPointF QCameraExposure::spotMeteringPoint() const
{
    return d_func()->exposureControl ? d_func()->exposureControl->actualValue(QCameraExposureControl::SpotMeteringPoint).toPointF() : QPointF();
}

/*!
  \fn QCameraExposure::setSpotMeteringPoint(const QPointF &point)

  Allows setting the spot metering point to \a point.

  \sa spotMeteringPoint()
*/

void QCameraExposure::setSpotMeteringPoint(const QPointF &point)
{
    if (d_func()->exposureControl)
        d_func()->exposureControl->setValue(QCameraExposureControl::SpotMeteringPoint, point);
}


/*!
    Returns true if the metering \a mode is supported.
*/
bool QCameraExposure::isMeteringModeSupported(QCameraExposure::MeteringMode mode) const
{
    if (!d_func()->exposureControl)
        return false;

    bool continuous = false;
    return d_func()->exposureControl->supportedParameterRange(QCameraExposureControl::MeteringMode, &continuous)
            .contains(QVariant::fromValue<QCameraExposure::MeteringMode>(mode));
}

int QCameraExposure::isoSensitivity() const
{
    return d_func()->actualExposureParameter<int>(QCameraExposureControl::ISO, -1);
}

/*!
    Returns the requested ISO sensitivity
    or -1 if automatic ISO is turned on.
*/
int QCameraExposure::requestedIsoSensitivity() const
{
    return d_func()->requestedExposureParameter<int>(QCameraExposureControl::ISO, -1);
}

/*!
    Returns the list of ISO senitivities camera supports.

    If the camera supports arbitrary ISO sensitivities within the supported range,
    *\a continuous is set to true, otherwise *\a continuous is set to false.
*/
QList<int> QCameraExposure::supportedIsoSensitivities(bool *continuous) const
{
    QList<int> res;
    QCameraExposureControl *control = d_func()->exposureControl;

    bool tmp = false;
    if (!continuous)
        continuous = &tmp;

    if (!control)
        return res;

    foreach (const QVariant &value,
             control->supportedParameterRange(QCameraExposureControl::ISO, continuous)) {
        bool ok = false;
        int intValue = value.toInt(&ok);
        if (ok)
            res.append(intValue);
        else
            qWarning() << "Incompatible ISO value type, int is expected";
    }

    return res;
}

/*!
    \fn QCameraExposure::setManualIsoSensitivity(int iso)
    Sets the manual sensitivity to \a iso
*/

void QCameraExposure::setManualIsoSensitivity(int iso)
{
    d_func()->setExposureParameter<int>(QCameraExposureControl::ISO, iso);
}

/*!
     \fn QCameraExposure::setAutoIsoSensitivity()
     Turn on auto sensitivity
*/

void QCameraExposure::setAutoIsoSensitivity()
{
    d_func()->resetExposureParameter(QCameraExposureControl::ISO);
}

/*!
    \property QCameraExposure::shutterSpeed
    \brief Camera's shutter speed in seconds.

    \sa supportedShutterSpeeds(), setAutoShutterSpeed(), setManualShutterSpeed()
*/

/*!
    \fn QCameraExposure::shutterSpeedChanged(qreal speed)

    Signals that a camera's shutter \a speed has changed.
*/

/*!
    \property QCameraExposure::isoSensitivity
    \brief The sensor ISO sensitivity.

    \sa supportedIsoSensitivities(), setAutoIsoSensitivity(), setManualIsoSensitivity()
*/

/*!
    \property QCameraExposure::aperture
    \brief Lens aperture is specified as an F number, the ratio of the focal length to effective aperture diameter.

    \sa supportedApertures(), setAutoAperture(), setManualAperture(), requestedAperture()
*/


qreal QCameraExposure::aperture() const
{
    return d_func()->actualExposureParameter<qreal>(QCameraExposureControl::Aperture, -1.0);
}

/*!
    Returns the requested manual aperture
    or -1.0 if automatic aperture is turned on.
*/
qreal QCameraExposure::requestedAperture() const
{
    return d_func()->requestedExposureParameter<qreal>(QCameraExposureControl::Aperture, -1.0);
}


/*!
    Returns the list of aperture values camera supports.
    The apertures list can change depending on the focal length,
    in such a case the apertureRangeChanged() signal is emitted.

    If the camera supports arbitrary aperture values within the supported range,
    *\a continuous is set to true, otherwise *\a continuous is set to false.
*/
QList<qreal> QCameraExposure::supportedApertures(bool * continuous) const
{
    QList<qreal> res;
    QCameraExposureControl *control = d_func()->exposureControl;

    bool tmp = false;
    if (!continuous)
        continuous = &tmp;

    if (!control)
        return res;

    foreach (const QVariant &value,
             control->supportedParameterRange(QCameraExposureControl::Aperture, continuous)) {
        bool ok = false;
        qreal realValue = value.toReal(&ok);
        if (ok)
            res.append(realValue);
        else
            qWarning() << "Incompatible aperture value type, qreal is expected";
    }

    return res;
}

/*!
    \fn QCameraExposure::setManualAperture(qreal aperture)
    Sets the manual camera \a aperture value.
*/

void QCameraExposure::setManualAperture(qreal aperture)
{
    d_func()->setExposureParameter<qreal>(QCameraExposureControl::Aperture, aperture);
}

/*!
    \fn QCameraExposure::setAutoAperture()
    Turn on auto aperture
*/

void QCameraExposure::setAutoAperture()
{
    d_func()->resetExposureParameter(QCameraExposureControl::Aperture);
}

/*!
    Returns the current shutter speed in seconds.
*/

qreal QCameraExposure::shutterSpeed() const
{
    return d_func()->actualExposureParameter<qreal>(QCameraExposureControl::ShutterSpeed, -1.0);
}

/*!
    Returns the requested manual shutter speed in seconds
    or -1.0 if automatic shutter speed is turned on.
*/
qreal QCameraExposure::requestedShutterSpeed() const
{
    return d_func()->requestedExposureParameter<qreal>(QCameraExposureControl::ShutterSpeed, -1.0);
}

/*!
    Returns the list of shutter speed values in seconds camera supports.

    If the camera supports arbitrary shutter speed values within the supported range,
    *\a continuous is set to true, otherwise *\a continuous is set to false.
*/
QList<qreal> QCameraExposure::supportedShutterSpeeds(bool *continuous) const
{
    QList<qreal> res;
    QCameraExposureControl *control = d_func()->exposureControl;

    bool tmp = false;
    if (!continuous)
        continuous = &tmp;

    if (!control)
        return res;

    foreach (const QVariant &value,
             control->supportedParameterRange(QCameraExposureControl::ShutterSpeed, continuous)) {
        bool ok = false;
        qreal realValue = value.toReal(&ok);
        if (ok)
            res.append(realValue);
        else
            qWarning() << "Incompatible shutter speed value type, qreal is expected";
    }

    return res;
}

/*!
    Set the manual shutter speed to \a seconds
*/

void QCameraExposure::setManualShutterSpeed(qreal seconds)
{
    d_func()->setExposureParameter<qreal>(QCameraExposureControl::ShutterSpeed, seconds);
}

/*!
    Turn on auto shutter speed
*/

void QCameraExposure::setAutoShutterSpeed()
{
    d_func()->resetExposureParameter(QCameraExposureControl::ShutterSpeed);
}


/*!
    \enum QCameraExposure::FlashMode

    \value FlashAuto            Automatic flash.
    \value FlashOff             Flash is Off.
    \value FlashOn              Flash is On.
    \value FlashRedEyeReduction Red eye reduction flash.
    \value FlashFill            Use flash to fillin shadows.
    \value FlashTorch           Constant light source. If supported,
                                torch can be enabled without loading the camera.
    \value FlashVideoLight      Constant light source, useful for video capture.
                                The light is turned on only while camera is active.
    \value FlashSlowSyncFrontCurtain
                                Use the flash in conjunction with a slow shutter speed.
                                This mode allows better exposure of distant objects and/or motion blur effect.
    \value FlashSlowSyncRearCurtain
                                The similar mode to FlashSlowSyncFrontCurtain but flash is fired at the end of exposure.
    \value FlashManual          Flash power is manualy set.
*/

/*!
    \enum QCameraExposure::ExposureMode

    \value ExposureAuto          Automatic mode.
    \value ExposureManual        Manual mode.
    \value ExposurePortrait      Portrait exposure mode.
    \value ExposureNight         Night mode.
    \value ExposureBacklight     Backlight exposure mode.
    \value ExposureSpotlight     Spotlight exposure mode.
    \value ExposureSports        Spots exposure mode.
    \value ExposureSnow          Snow exposure mode.
    \value ExposureBeach         Beach exposure mode.
    \value ExposureLargeAperture Use larger aperture with small depth of field.
    \value ExposureSmallAperture Use smaller aperture.
    \value ExposureAction        Action mode. Since 5.5
    \value ExposureLandscape     Landscape mode. Since 5.5
    \value ExposureNightPortrait Night portrait mode. Since 5.5
    \value ExposureTheatre       Theatre mode. Since 5.5
    \value ExposureSunset        Sunset mode. Since 5.5
    \value ExposureSteadyPhoto   Steady photo mode. Since 5.5
    \value ExposureFireworks     Fireworks mode. Since 5.5
    \value ExposureParty         Party mode. Since 5.5
    \value ExposureCandlelight   Candlelight mode. Since 5.5
    \value ExposureBarcode       Barcode mode. Since 5.5
    \value ExposureModeVendor    The base value for device specific exposure modes.
*/

/*!
    \enum QCameraExposure::MeteringMode

    \value MeteringMatrix        Matrix metering mode.
    \value MeteringAverage       Center weighted average metering mode.
    \value MeteringSpot          Spot metering mode.
*/

/*!
    \property QCameraExposure::flashReady
    \brief Indicates if the flash is charged and ready to use.
*/

/*!
    \fn void QCameraExposure::flashReady(bool ready)

    Signal the flash \a ready status has changed.
*/

/*!
    \fn void QCameraExposure::apertureChanged(qreal value)

    Signal emitted when aperature changes to \a value.
*/

/*!
    \fn void QCameraExposure::apertureRangeChanged()

    Signal emitted when aperature range has changed.
*/


/*!
    \fn void QCameraExposure::shutterSpeedRangeChanged()

    Signal emitted when the shutter speed range has changed.
*/


/*!
    \fn void QCameraExposure::isoSensitivityChanged(int value)

    Signal emitted when sensitivity changes to \a value.
*/

/*!
    \fn void QCameraExposure::exposureCompensationChanged(qreal value)

    Signal emitted when the exposure compensation changes to \a value.
*/

#include "moc_qcameraexposure.cpp"
QT_END_NAMESPACE