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Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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QAVFCameraBase Class Referenceabstract

#include <qavfcamerabase_p.h>

Inheritance diagram for QAVFCameraBase:
Collaboration diagram for QAVFCameraBase:

Public Member Functions

 QAVFCameraBase (QCamera *camera)
 ~QAVFCameraBase ()
bool isActive () const override
void setActive (bool active) override final
void setCamera (const QCameraDevice &camera) override final
bool setCameraFormat (const QCameraFormat &format) override final
void setFocusMode (QCamera::FocusMode mode) override
bool isFocusModeSupported (QCamera::FocusMode mode) const override
void setCustomFocusPoint (const QPointF &point) override
void setFocusDistance (float distance) override
void zoomTo (float factor, float rate) override
void setFlashMode (QCamera::FlashMode mode) override
bool isFlashModeSupported (QCamera::FlashMode mode) const override
bool isFlashReady () const override
void setTorchMode (QCamera::TorchMode mode) override
bool isTorchModeSupported (QCamera::TorchMode mode) const override
void setExposureMode (QCamera::ExposureMode) override
bool isExposureModeSupported (QCamera::ExposureMode mode) const override
void setExposureCompensation (float bias) override
void setManualIsoSensitivity (int value) override
virtual int isoSensitivity () const override
void setManualExposureTime (float value) override
virtual float exposureTime () const override
AVCaptureDevice * device () const
Public Member Functions inherited from QPlatformCamera
QCameraFormat cameraFormat () const
virtual bool isWhiteBalanceModeSupported (QCamera::WhiteBalanceMode mode) const
virtual void setWhiteBalanceMode (QCamera::WhiteBalanceMode)
virtual void setColorTemperature (int)
QVideoFrameFormat frameFormat () const override
QCamera::Features supportedFeatures () const
QCamera::FocusMode focusMode () const
QPointF focusPoint () const
float minZoomFactor () const
float maxZoomFactor () const
float zoomFactor () const
QPointF customFocusPoint () const
float focusDistance () const
QCamera::FlashMode flashMode () const
QCamera::TorchMode torchMode () const
QCamera::ExposureMode exposureMode () const
float exposureCompensation () const
int manualIsoSensitivity () const
int minIso () const
int maxIso () const
float manualExposureTime () const
float minExposureTime () const
float maxExposureTime () const
QCamera::WhiteBalanceMode whiteBalanceMode () const
int colorTemperature () const
void supportedFeaturesChanged (QCamera::Features)
void minimumZoomFactorChanged (float factor)
void maximumZoomFactorChanged (float)
void focusModeChanged (QCamera::FocusMode mode)
void customFocusPointChanged (const QPointF &point)
void focusDistanceChanged (float d)
void zoomFactorChanged (float zoom)
void flashReadyChanged (bool)
void flashModeChanged (QCamera::FlashMode mode)
void torchModeChanged (QCamera::TorchMode mode)
void exposureModeChanged (QCamera::ExposureMode mode)
void exposureCompensationChanged (float compensation)
void exposureCompensationRangeChanged (float min, float max)
void isoSensitivityChanged (int iso)
void minIsoChanged (int iso)
void maxIsoChanged (int iso)
void exposureTimeChanged (float speed)
void minExposureTimeChanged (float secs)
void maxExposureTimeChanged (float secs)
void whiteBalanceModeChanged (QCamera::WhiteBalanceMode mode)
void colorTemperatureChanged (int temperature)
QCamera::Error error () const
QString errorString () const final
void updateError (QCamera::Error error, const QString &errorString)
Public Member Functions inherited from QPlatformVideoSource
virtual std::optional< int > ffmpegHWPixelFormat () const
virtual void setCaptureSession (QPlatformMediaCaptureSession *)
bool hasError () const
Q_INVOKABLE QObject (QObject *parent=nullptr)
 Constructs an object with parent object parent.
 QObject (QObjectPrivate &dd, QObject *parent=nullptr)
Public Member Functions inherited from QObject
Q_INVOKABLE QObject (QObject *parent=nullptr)
 Constructs an object with parent object parent.
virtual ~QObject ()
 Destroys the object, deleting all its child objects.
virtual bool event (QEvent *event)
 This virtual function receives events to an object and should return true if the event e was recognized and processed.
virtual bool eventFilter (QObject *watched, QEvent *event)
 Filters events if this object has been installed as an event filter for the watched object.
QString objectName () const
Q_WEAK_OVERLOAD void setObjectName (const QString &name)
 Sets the object's name to name.
void setObjectName (QAnyStringView name)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
QBindable< QStringbindableObjectName ()
bool isWidgetType () const
 Returns true if the object is a widget; otherwise returns false.
bool isWindowType () const
 Returns true if the object is a window; otherwise returns false.
bool isQuickItemType () const
 Returns true if the object is a QQuickItem; otherwise returns false.
bool isQmlObjectType () const
 Returns whether the object has been created by the QML engine or ownership has been explicitly set via QJSEngine::setObjectOwnership().
bool signalsBlocked () const noexcept
 Returns true if signals are blocked; otherwise returns false.
bool blockSignals (bool b) noexcept
 If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).
QThreadthread () const
 Returns the thread in which the object lives.
bool moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
 Changes the thread affinity for this object and its children and returns true on success.
int startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
 This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.
int startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)
void killTimer (int id)
 Kills the timer with timer identifier, id.
void killTimer (Qt::TimerId id)
template<typename T>
findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.
template<typename T>
QList< T > findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.
template<typename T>
findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
template<typename T>
QList< T > findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
const QObjectListchildren () const
 Returns a list of child objects.
void setParent (QObject *parent)
 Makes the object a child of parent.
void installEventFilter (QObject *filterObj)
 Installs an event filter filterObj on this object.
void removeEventFilter (QObject *obj)
 Removes an event filter object obj from this object.
QMetaObject::Connection connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
bool disconnect (const char *signal=nullptr, const QObject *receiver=nullptr, const char *member=nullptr) const
bool disconnect (const QObject *receiver, const char *member=nullptr) const
void dumpObjectTree () const
 Dumps a tree of children to the debug output.
void dumpObjectInfo () const
 Dumps information about signal connections, etc.
bool setProperty (const char *name, const QVariant &value)
 Sets the value of the object's name property to value.
bool setProperty (const char *name, QVariant &&value)
QVariant property (const char *name) const
 Returns the value of the object's name property.
QList< QByteArraydynamicPropertyNames () const
QBindingStoragebindingStorage ()
const QBindingStoragebindingStorage () const
QObjectparent () const
 Returns a pointer to the parent object.
bool inherits (const char *classname) const
 Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false.

Static Public Member Functions

static AVCaptureDevice * tryGetAvCaptureDevice (const QCameraDevice &device)
Static Public Member Functions inherited from QPlatformCamera
static int colorTemperatureForWhiteBalance (QCamera::WhiteBalanceMode mode)
Static Public Member Functions inherited from QObject
static QMetaObject::Connection connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
 \threadsafe
static QMetaObject::Connection connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
template<typename Func1, typename Func2>
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType *context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)
template<typename Func1, typename Func2>
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)
static bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
 \threadsafe
static bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
static bool disconnect (const QMetaObject::Connection &)
 Disconnect a connection.
template<typename Func1, typename Func2>
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiver, Func2 slot)
template<typename Func1>
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *receiver, void **zero)

Protected Member Functions

virtual void onActiveChanged (bool active)=0
virtual void onCameraDeviceChanged (const QCameraDevice &device)=0
virtual bool tryApplyCameraFormat (const QCameraFormat &)=0
bool checkCameraPermission ()
void updateCameraConfiguration ()
void updateSupportedFeatures ()
void applyFlashSettings ()
void applyFocusDistanceToAVCaptureDevice (float distance)
Protected Member Functions inherited from QPlatformCamera
 QPlatformCamera (QCamera *parent)
virtual int cameraPixelFormatScore (QVideoFrameFormat::PixelFormat, QVideoFrameFormat::ColorRange) const
QCameraFormat findBestCameraFormat (const QCameraDevice &camera) const
Protected Member Functions inherited from QObject
QObjectsender () const
 Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.
int senderSignalIndex () const
int receivers (const char *signal) const
 Returns the number of receivers connected to the signal.
bool isSignalConnected (const QMetaMethod &signal) const
virtual void timerEvent (QTimerEvent *event)
 This event handler can be reimplemented in a subclass to receive timer events for the object.
virtual void childEvent (QChildEvent *event)
 This event handler can be reimplemented in a subclass to receive child events.
virtual void customEvent (QEvent *event)
 This event handler can be reimplemented in a subclass to receive custom events.
virtual void connectNotify (const QMetaMethod &signal)
virtual void disconnectNotify (const QMetaMethod &signal)
 QObject (QObjectPrivate &dd, QObject *parent=nullptr)

Protected Attributes

QCameraDevice m_cameraDevice
bool m_active = false
Protected Attributes inherited from QPlatformCamera
QCameraFormat m_cameraFormat
QVideoFrameFormat::PixelFormat m_framePixelFormat = QVideoFrameFormat::Format_Invalid
Protected Attributes inherited from QObject
QScopedPointer< QObjectDatad_ptr

Additional Inherited Members

Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
Signals inherited from QPlatformCamera
void errorOccurred (QCamera::Error error, const QString &errorString)
Signals inherited from QPlatformVideoSource
void newVideoFrame (const QVideoFrame &)
void activeChanged (bool)
void errorChanged ()
Signals inherited from QObject
void destroyed (QObject *=nullptr)
 This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.
void objectNameChanged (const QString &objectName, QPrivateSignal)
 This signal is emitted after the object's name has been changed.
Static Protected Member Functions inherited from QPlatformCamera
static constexpr int defaultColorTemperature ()
static constexpr QPointF defaultCustomFocusPoint ()
static constexpr float defaultExposureCompensation ()
static constexpr QCamera::ExposureMode defaultExposureMode ()
static constexpr float defaultExposureTime ()
static constexpr QCamera::FlashMode defaultFlashMode ()
static constexpr bool defaultFlashReady ()
static constexpr float defaultFocusDistance ()
static constexpr QCamera::FocusMode defaultFocusMode ()
static constexpr int defaultIso ()
static constexpr QCamera::TorchMode defaultTorchMode ()
static constexpr QCamera::WhiteBalanceMode defaultWhiteBalanceMode ()
static constexpr float defaultZoomFactor ()
Properties inherited from QObject
QString objectName
 the name of this object

Detailed Description

Definition at line 27 of file qavfcamerabase_p.h.

Constructor & Destructor Documentation

◆ QAVFCameraBase()

QAVFCameraBase::QAVFCameraBase ( QCamera * camera)

Definition at line 104 of file qavfcamerabase.mm.

◆ ~QAVFCameraBase()

QAVFCameraBase::~QAVFCameraBase ( )

Definition at line 110 of file qavfcamerabase.mm.

Member Function Documentation

◆ applyFlashSettings()

void QAVFCameraBase::applyFlashSettings ( )
protected

Definition at line 718 of file qavfcamerabase.mm.

◆ applyFocusDistanceToAVCaptureDevice()

void QAVFCameraBase::applyFocusDistanceToAVCaptureDevice ( float distance)
protected

Definition at line 313 of file qavfcamerabase.mm.

◆ checkCameraPermission()

bool QAVFCameraBase::checkCameraPermission ( )
protected

Definition at line 1031 of file qavfcamerabase.mm.

◆ device()

AVCaptureDevice * QAVFCameraBase::device ( ) const

Definition at line 170 of file qavfcamerabase.mm.

◆ exposureTime()

float QAVFCameraBase::exposureTime ( ) const
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 844 of file qavfcamerabase.mm.

◆ isActive()

bool QAVFCameraBase::isActive ( ) const
overridevirtual

Implements QPlatformVideoSource.

Definition at line 114 of file qavfcamerabase.mm.

◆ isExposureModeSupported()

bool QAVFCameraBase::isExposureModeSupported ( QCamera::ExposureMode mode) const
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 707 of file qavfcamerabase.mm.

◆ isFlashModeSupported()

bool QAVFCameraBase::isFlashModeSupported ( QCamera::FlashMode mode) const
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 614 of file qavfcamerabase.mm.

◆ isFlashReady()

bool QAVFCameraBase::isFlashReady ( ) const
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 624 of file qavfcamerabase.mm.

◆ isFocusModeSupported()

bool QAVFCameraBase::isFocusModeSupported ( QCamera::FocusMode mode) const
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 255 of file qavfcamerabase.mm.

◆ isoSensitivity()

int QAVFCameraBase::isoSensitivity ( ) const
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 1025 of file qavfcamerabase.mm.

◆ isTorchModeSupported()

bool QAVFCameraBase::isTorchModeSupported ( QCamera::TorchMode mode) const
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 663 of file qavfcamerabase.mm.

◆ onActiveChanged()

virtual void QAVFCameraBase::onActiveChanged ( bool active)
protectedpure virtual

Implemented in AVFCamera, and QFFmpeg::QAVFCamera.

◆ onCameraDeviceChanged()

virtual void QAVFCameraBase::onCameraDeviceChanged ( const QCameraDevice & device)
protectedpure virtual

Implemented in AVFCamera, and QFFmpeg::QAVFCamera.

◆ setActive()

void QAVFCameraBase::setActive ( bool active)
finaloverridevirtual

Implements QPlatformVideoSource.

Definition at line 119 of file qavfcamerabase.mm.

◆ setCamera()

void QAVFCameraBase::setCamera ( const QCameraDevice & camera)
finaloverridevirtual

Implements QPlatformCamera.

Definition at line 135 of file qavfcamerabase.mm.

◆ setCameraFormat()

bool QAVFCameraBase::setCameraFormat ( const QCameraFormat & format)
finaloverridevirtual

Reimplemented from QPlatformCamera.

Definition at line 150 of file qavfcamerabase.mm.

◆ setCustomFocusPoint()

void QAVFCameraBase::setCustomFocusPoint ( const QPointF & point)
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 282 of file qavfcamerabase.mm.

◆ setExposureCompensation()

void QAVFCameraBase::setExposureCompensation ( float bias)
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 780 of file qavfcamerabase.mm.

◆ setExposureMode()

void QAVFCameraBase::setExposureMode ( QCamera::ExposureMode qtMode)
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 673 of file qavfcamerabase.mm.

◆ setFlashMode()

void QAVFCameraBase::setFlashMode ( QCamera::FlashMode mode)
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 596 of file qavfcamerabase.mm.

◆ setFocusDistance()

void QAVFCameraBase::setFocusDistance ( float distance)
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 342 of file qavfcamerabase.mm.

◆ setFocusMode()

void QAVFCameraBase::setFocusMode ( QCamera::FocusMode mode)
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 201 of file qavfcamerabase.mm.

◆ setManualExposureTime()

void QAVFCameraBase::setManualExposureTime ( float value)
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 804 of file qavfcamerabase.mm.

◆ setManualIsoSensitivity()

void QAVFCameraBase::setManualIsoSensitivity ( int value)
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 987 of file qavfcamerabase.mm.

◆ setTorchMode()

void QAVFCameraBase::setTorchMode ( QCamera::TorchMode mode)
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 645 of file qavfcamerabase.mm.

◆ tryApplyCameraFormat()

virtual bool QAVFCameraBase::tryApplyCameraFormat ( const QCameraFormat & )
nodiscardprotectedpure virtual

Implemented in AVFCamera, and QFFmpeg::QAVFCamera.

◆ tryGetAvCaptureDevice()

AVCaptureDevice * QAVFCameraBase::tryGetAvCaptureDevice ( const QCameraDevice & device)
staticnodiscard

Definition at line 175 of file qavfcamerabase.mm.

◆ updateCameraConfiguration()

void QAVFCameraBase::updateCameraConfiguration ( )
protected

Definition at line 370 of file qavfcamerabase.mm.

◆ updateSupportedFeatures()

void QAVFCameraBase::updateSupportedFeatures ( )
protected

Definition at line 515 of file qavfcamerabase.mm.

◆ zoomTo()

void QAVFCameraBase::zoomTo ( float factor,
float rate )
overridevirtual

Reimplemented from QPlatformCamera.

Definition at line 557 of file qavfcamerabase.mm.

Member Data Documentation

◆ m_active

bool QAVFCameraBase::m_active = false
protected

Definition at line 106 of file qavfcamerabase_p.h.

◆ m_cameraDevice

QCameraDevice QAVFCameraBase::m_cameraDevice
protected

Definition at line 105 of file qavfcamerabase_p.h.


The documentation for this class was generated from the following files: