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Diffstat (limited to 'src/multimedia/qmediaobject.cpp')
| -rw-r--r-- | src/multimedia/qmediaobject.cpp | 423 |
1 files changed, 0 insertions, 423 deletions
diff --git a/src/multimedia/qmediaobject.cpp b/src/multimedia/qmediaobject.cpp deleted file mode 100644 index 7eb1a2d..0000000 --- a/src/multimedia/qmediaobject.cpp +++ /dev/null @@ -1,423 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 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 <QtCore/qmetaobject.h> -#include <QtCore/qdebug.h> - -#include "qmediaobject_p.h" - -#include <qmediaservice.h> -#include <qmetadatareadercontrol.h> -#include <qmediabindableinterface.h> - - -QT_BEGIN_NAMESPACE - -void QMediaObjectPrivate::_q_notify() -{ - Q_Q(QMediaObject); - - const QMetaObject* m = q->metaObject(); - - foreach (int pi, notifyProperties) { - QMetaProperty p = m->property(pi); - p.notifySignal().invoke( - q, QGenericArgument(QMetaType::typeName(p.userType()), p.read(q).data())); - } -} - - -/*! - \class QMediaObject - - \brief The QMediaObject class provides a common base for multimedia objects. - - \inmodule QtMultimedia - \ingroup multimedia - \since 1.0 - - QMediaObject derived classes provide access to the functionality of a - QMediaService. Each media object hosts a QMediaService and uses the - QMediaControl interfaces implemented by the service to implement its - API. Most media objects when constructed will request a new - QMediaService instance from a QMediaServiceProvider, but some like - QMediaRecorder will share a service with another object. - - QMediaObject itself provides an API for accessing a media - service's \l {metaData()}{meta-data} and a means of connecting other media objects, - and peripheral classes like QVideoWidget and QMediaPlaylist. - - \sa QMediaService, QMediaControl -*/ - -/*! - Destroys this media object. -*/ - -QMediaObject::~QMediaObject() -{ - delete d_ptr; -} - -/*! - Returns the service availability error state. - \since 1.0 -*/ - -QtMultimedia::AvailabilityError QMediaObject::availabilityError() const -{ - return d_func()->service == 0 ? QtMultimedia::ServiceMissingError : QtMultimedia::NoError; -} - -/*! - Returns true if the service is available for use. - \since 1.0 -*/ - -bool QMediaObject::isAvailable() const -{ - return d_func()->service != 0; -} - -/*! - Returns the media service that provides the functionality of this multimedia object. - \since 1.0 -*/ - -QMediaService* QMediaObject::service() const -{ - return d_func()->service; -} - -int QMediaObject::notifyInterval() const -{ - return d_func()->notifyTimer->interval(); -} - -void QMediaObject::setNotifyInterval(int milliSeconds) -{ - Q_D(QMediaObject); - - if (d->notifyTimer->interval() != milliSeconds) { - d->notifyTimer->setInterval(milliSeconds); - - emit notifyIntervalChanged(milliSeconds); - } -} - -/*! - Bind \a object to this QMediaObject instance. - - This method establishes a relationship between this media object and a - helper object. The nature of the relationship depends on both parties. This - methods returns true if the helper was successfully bound, false otherwise. - - Most subclasses of QMediaObject provide more convenient functions - that wrap this functionality, so this function rarely needs to be - called directly. - - The object passed must implement the QMediaBindableInterface interface. - - \since 1.0 - \sa QMediaBindableInterface -*/ -bool QMediaObject::bind(QObject *object) -{ - QMediaBindableInterface *helper = qobject_cast<QMediaBindableInterface*>(object); - if (!helper) - return false; - - QMediaObject *currentObject = helper->mediaObject(); - - if (currentObject == this) - return true; - - if (currentObject) - currentObject->unbind(object); - - return helper->setMediaObject(this); -} - -/*! - Detach \a object from the QMediaObject instance. - - Unbind the helper object from this media object. A warning - will be generated if the object was not previously bound to this - object. - - \since 1.0 - \sa QMediaBindableInterface -*/ -void QMediaObject::unbind(QObject *object) -{ - QMediaBindableInterface *helper = qobject_cast<QMediaBindableInterface*>(object); - - if (helper && helper->mediaObject() == this) - helper->setMediaObject(0); - else - qWarning() << "QMediaObject: Trying to unbind not connected helper object"; -} - -/*! - Constructs a media object which uses the functionality provided by a media \a service. - - The \a parent is passed to QObject. - - This class is meant as a base class for multimedia objects so this - constructor is protected. - \since 1.0 -*/ - -QMediaObject::QMediaObject(QObject *parent, QMediaService *service): - QObject(parent), - d_ptr(new QMediaObjectPrivate) - -{ - Q_D(QMediaObject); - - d->q_ptr = this; - - d->notifyTimer = new QTimer(this); - d->notifyTimer->setInterval(1000); - connect(d->notifyTimer, SIGNAL(timeout()), SLOT(_q_notify())); - - d->service = service; - - setupMetaData(); -} - -/*! - \internal -*/ - -QMediaObject::QMediaObject(QMediaObjectPrivate &dd, QObject *parent, - QMediaService *service): - QObject(parent), - d_ptr(&dd) -{ - Q_D(QMediaObject); - d->q_ptr = this; - - d->notifyTimer = new QTimer(this); - d->notifyTimer->setInterval(1000); - connect(d->notifyTimer, SIGNAL(timeout()), SLOT(_q_notify())); - - d->service = service; - - setupMetaData(); -} - -/*! - Watch the property \a name. The property's notify signal will be emitted - once every \code notifyInterval milliseconds. - - \since 1.0 - \sa notifyInterval -*/ - -void QMediaObject::addPropertyWatch(QByteArray const &name) -{ - Q_D(QMediaObject); - - const QMetaObject* m = metaObject(); - - int index = m->indexOfProperty(name.constData()); - - if (index != -1 && m->property(index).hasNotifySignal()) { - d->notifyProperties.insert(index); - - if (!d->notifyTimer->isActive()) - d->notifyTimer->start(); - } -} - -/*! - Remove property \a name from the list of properties whose changes are - regularly signaled. - - \since 1.0 - \sa notifyInterval -*/ - -void QMediaObject::removePropertyWatch(QByteArray const &name) -{ - Q_D(QMediaObject); - - int index = metaObject()->indexOfProperty(name.constData()); - - if (index != -1) { - d->notifyProperties.remove(index); - - if (d->notifyProperties.isEmpty()) - d->notifyTimer->stop(); - } -} - -/*! - \property QMediaObject::notifyInterval - - The interval at which notifiable properties will update. - - The interval is expressed in milliseconds, the default value is 1000. - - \since 1.0 - \sa addPropertyWatch(), removePropertyWatch() -*/ - -/*! - \fn void QMediaObject::notifyIntervalChanged(int milliseconds) - - Signal a change in the notify interval period to \a milliseconds. - \since 1.0 -*/ - -/*! - Returns true if there is meta-data associated with this media object, else false. - \since 1.0 -*/ - -bool QMediaObject::isMetaDataAvailable() const -{ - Q_D(const QMediaObject); - - return d->metaDataControl - ? d->metaDataControl->isMetaDataAvailable() - : false; -} - -/*! - \fn QMediaObject::metaDataAvailableChanged(bool available) - - Signals that the \a available state of a media object's meta-data has changed. - \since 1.0 -*/ - -/*! - Returns the value associated with a meta-data \a key. - \since 1.0 -*/ -QVariant QMediaObject::metaData(QtMultimedia::MetaData key) const -{ - Q_D(const QMediaObject); - - return d->metaDataControl - ? d->metaDataControl->metaData(key) - : QVariant(); -} - -/*! - Returns a list of keys there is meta-data available for. - \since 1.0 -*/ -QList<QtMultimedia::MetaData> QMediaObject::availableMetaData() const -{ - Q_D(const QMediaObject); - - return d->metaDataControl - ? d->metaDataControl->availableMetaData() - : QList<QtMultimedia::MetaData>(); -} - -/*! - \fn QMediaObject::metaDataChanged() - - Signals that this media object's meta-data has changed. - \since 1.0 -*/ - -/*! - Returns the value associated with a meta-data \a key. - - The naming and type of extended meta-data is not standardized, so the values and meaning - of keys may vary between backends. - \since 1.0 -*/ -QVariant QMediaObject::extendedMetaData(const QString &key) const -{ - Q_D(const QMediaObject); - - return d->metaDataControl - ? d->metaDataControl->extendedMetaData(key) - : QVariant(); -} - -/*! - Returns a list of keys there is extended meta-data available for. - \since 1.0 -*/ -QStringList QMediaObject::availableExtendedMetaData() const -{ - Q_D(const QMediaObject); - - return d->metaDataControl - ? d->metaDataControl->availableExtendedMetaData() - : QStringList(); -} - - -void QMediaObject::setupMetaData() -{ - Q_D(QMediaObject); - - if (d->service != 0) { - d->metaDataControl = qobject_cast<QMetaDataReaderControl*>( - d->service->requestControl(QMetaDataReaderControl_iid)); - - if (d->metaDataControl) { - connect(d->metaDataControl, SIGNAL(metaDataChanged()), SIGNAL(metaDataChanged())); - connect(d->metaDataControl, - SIGNAL(metaDataAvailableChanged(bool)), - SIGNAL(metaDataAvailableChanged(bool))); - } - } -} - -/*! - \fn QMediaObject::availabilityChanged(bool available) - - Signal emitted when the availability state has changed to \a available - \since 1.0 -*/ - - -#include "moc_qmediaobject.cpp" -QT_END_NAMESPACE - |