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Diffstat (limited to 'src/multimedia/qcameracontrol.cpp')
| -rw-r--r-- | src/multimedia/qcameracontrol.cpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/src/multimedia/qcameracontrol.cpp b/src/multimedia/qcameracontrol.cpp new file mode 100644 index 000000000..df5c44cc1 --- /dev/null +++ b/src/multimedia/qcameracontrol.cpp @@ -0,0 +1,215 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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, Nokia gives you certain additional +** rights. These rights are described in the Nokia 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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-serv + \since 1.1 + + This service is provided by a QMediaService object via + QMediaService::control(). It is used by QCamera. + + The interface name of QCameraControl is \c com.nokia.Qt.QCameraControl/1.0 as + defined in QCameraControl_iid. + + + + \sa QMediaService::requestControl(), QCamera +*/ + +/*! + \macro QCameraControl_iid + + \c com.nokia.Qt.QCameraControl/1.0 + + 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. + + \since 1.1 + \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. + + \since 1.1 + \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. + \since 1.1 +*/ + +/*! + \fn QCameraControl::status() const + + Returns the status of the camera service. + + \since 1.1 + \sa QCamera::state +*/ + +/*! + \fn void QCameraControl::statusChanged(QCamera::Status status) + + Signal emitted when the camera \a status changes. + \since 1.1 +*/ + + +/*! + \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. + \since 1.1 +*/ + +/*! + \fn Camera::CaptureMode QCameraControl::captureMode() const = 0 + + Returns the current capture mode. + \since 1.1 +*/ + +/*! + \fn void QCameraControl::setCaptureMode(QCamera::CaptureMode 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. + \since 1.1 +*/ + +/*! + \fn bool QCameraControl::isCaptureModeSupported(QCamera::CaptureMode mode) const = 0; + + Returns true if the capture \a mode is suported. + \since 1.1 +*/ + +/*! + \fn QCameraControl::captureModeChanged(QCamera::CaptureMode mode) + + Signal emitted when the camera capture \a mode changes. + \since 1.1 + */ + +/*! + \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. + \since 1.1 +*/ + +/*! + \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. +*/ + +#include "moc_qcameracontrol.cpp" +QT_END_NAMESPACE |