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| |
| #include <qcameracontrol.h> |
| #include "qmediacontrol_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| /*! |
| \class QCameraControl |
| |
| |
| |
| \brief The QCameraControl class is an abstract base class for |
| classes that control still cameras or video cameras. |
| |
| \inmodule QtMultimedia |
| |
| \ingroup multimedia_control |
| |
| This service is provided by a QMediaService object via |
| QMediaService::control(). It is used by QCamera. |
| |
| The interface name of QCameraControl is \c org.qt-project.qt.cameracontrol/5.0 as |
| defined in QCameraControl_iid. |
| |
| |
| |
| \sa QMediaService::requestControl(), QCamera |
| */ |
| |
| /*! |
| \macro QCameraControl_iid |
| |
| \c org.qt-project.qt.cameracontrol/5.0 |
| |
| Defines the interface name of the QCameraControl class. |
| |
| \relates QCameraControl |
| */ |
| |
| /*! |
| Constructs a camera control object with \a parent. |
| */ |
| |
| QCameraControl::QCameraControl(QObject *parent): |
| QMediaControl(*new QMediaControlPrivate, parent) |
| { |
| } |
| |
| /*! |
| Destruct the camera control object. |
| */ |
| |
| QCameraControl::~QCameraControl() |
| { |
| } |
| |
| /*! |
| \fn QCameraControl::state() const |
| |
| Returns the state of the camera service. |
| |
| \sa QCamera::state |
| */ |
| |
| /*! |
| \fn QCameraControl::setState(QCamera::State state) |
| |
| Sets the camera \a state. |
| |
| State changes are synchronous and indicate user intention, |
| while camera status is used as a feedback mechanism to inform application about backend status. |
| Status changes are reported asynchronously with QCameraControl::statusChanged() signal. |
| |
| \sa QCamera::State |
| */ |
| |
| /*! |
| \fn void QCameraControl::stateChanged(QCamera::State state) |
| |
| Signal emitted when the camera \a state changes. |
| |
| In most cases the state chage is caused by QCameraControl::setState(), |
| but if critical error has occurred the state changes to QCamera::UnloadedState. |
| */ |
| |
| /*! |
| \fn QCameraControl::status() const |
| |
| Returns the status of the camera service. |
| |
| \sa QCamera::state |
| */ |
| |
| /*! |
| \fn void QCameraControl::statusChanged(QCamera::Status status) |
| |
| Signal emitted when the camera \a status changes. |
| */ |
| |
| |
| /*! |
| \fn void QCameraControl::error(int error, const QString &errorString) |
| |
| Signal emitted when an error occurs with error code \a error and |
| a description of the error \a errorString. |
| */ |
| |
| /*! |
| \fn Camera::CaptureModes QCameraControl::captureMode() const = 0 |
| |
| Returns the current capture mode. |
| */ |
| |
| /*! |
| \fn void QCameraControl::setCaptureMode(QCamera::CaptureModes mode) = 0; |
| |
| Sets the current capture \a mode. |
| |
| The capture mode changes are synchronous and allowed in any camera state. |
| |
| If the capture mode is changed while camera is active, |
| it's recommended to change status to QCamera::LoadedStatus |
| and start activating the camera in the next event loop |
| with the status changed to QCamera::StartingStatus. |
| This allows the capture settings to be applied before camera is started. |
| Than change the status to QCamera::StartedStatus when the capture mode change is done. |
| */ |
| |
| /*! |
| \fn bool QCameraControl::isCaptureModeSupported(QCamera::CaptureModes mode) const = 0; |
| |
| Returns true if the capture \a mode is suported. |
| */ |
| |
| /*! |
| \fn QCameraControl::captureModeChanged(QCamera::CaptureModes mode) |
| |
| Signal emitted when the camera capture \a mode changes. |
| */ |
| |
| /*! |
| \fn bool QCameraControl::canChangeProperty(PropertyChangeType changeType, QCamera::Status status) const |
| |
| Returns true if backend can effectively apply changing camera properties of \a changeType type |
| while the camera state is QCamera::Active and camera status matches \a status parameter. |
| |
| If backend doesn't support applying this change in the active state, it will be stopped |
| before the settings are changed and restarted after. |
| Otherwise the backend should apply the change in the current state, |
| with the camera status indicating the progress, if necessary. |
| */ |
| |
| /*! |
| \enum QCameraControl::PropertyChangeType |
| |
| \value CaptureMode Indicates the capture mode is changed. |
| \value ImageEncodingSettings Image encoder settings are changed, including resolution. |
| \value VideoEncodingSettings |
| Video encoder settings are changed, including audio, video and container settings. |
| \value Viewfinder Viewfinder is changed. |
| \value ViewfinderSettings Viewfinder settings are changed. |
| */ |
| |
| QT_END_NAMESPACE |
| |
| #include "moc_qcameracontrol.cpp" |