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Initial copy of QtMultimediaKit.

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Michael Goddard
2011-06-29 13:38:46 +10:00
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src/multimediakit/qmediaplayercontrol.cpp Normal file
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/****************************************************************************
**
** 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 Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 "qmediaplayercontrol.h"
#include "qmediacontrol_p.h"
#include "qmediaplayer.h"
QT_BEGIN_NAMESPACE
/*!
\class QMediaPlayerControl
\inmodule QtMultimediaKit
\ingroup multimedia
\since 1.0
\brief The QMediaPlayerControl class provides access to the media playing
functionality of a QMediaService.
If a QMediaService can play media is will implement QMediaPlayerControl.
This control provides a means to set the \l {setMedia()}{media} to play,
\l {play()}{start}, \l {pause()} {pause} and \l {stop()}{stop} playback,
\l {setPosition()}{seek}, and control the \l {setVolume()}{volume}.
It also provides feedback on the \l {duration()}{duration} of the media,
the current \l {position()}{position}, and \l {bufferStatus()}{buffering}
progress.
The functionality provided by this control is exposed to application
code through the QMediaPlayer class.
The interface name of QMediaPlayerControl is \c com.nokia.Qt.QMediaPlayerControl/1.0 as
defined in QMediaPlayerControl_iid.
\sa QMediaService::requestControl(), QMediaPlayer
*/
/*!
\macro QMediaPlayerControl_iid
\c com.nokia.Qt.QMediaPlayerControl/1.0
Defines the interface name of the QMediaPlayerControl class.
\relates QMediaPlayerControl
*/
/*!
Destroys a media player control.
*/
QMediaPlayerControl::~QMediaPlayerControl()
{
}
/*!
Constructs a new media player control with the given \a parent.
*/
QMediaPlayerControl::QMediaPlayerControl(QObject *parent):
QMediaControl(*new QMediaControlPrivate, parent)
{
}
/*!
\fn QMediaPlayerControl::state() const
Returns the state of a player control.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::stateChanged(QMediaPlayer::State state)
Signals that the \a state of a player control has changed.
\since 1.0
\sa state()
*/
/*!
\fn QMediaPlayerControl::mediaStatus() const
Returns the status of the current media.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::mediaStatusChanged(QMediaPlayer::MediaStatus status)
Signals that the \a status of the current media has changed.
\since 1.0
\sa mediaStatus()
*/
/*!
\fn QMediaPlayerControl::duration() const
Returns the duration of the current media in milliseconds.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::durationChanged(qint64 duration)
Signals that the \a duration of the current media has changed.
\since 1.0
\sa duration()
*/
/*!
\fn QMediaPlayerControl::position() const
Returns the current playback position in milliseconds.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::setPosition(qint64 position)
Sets the playback \a position of the current media. This will initiate a seek and it may take
some time for playback to reach the position set.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::positionChanged(qint64 position)
Signals the playback \a position has changed.
This is only emitted in when there has been a discontinous change in the playback postion, such
as a seek or the position being reset.
\since 1.0
\sa position()
*/
/*!
\fn QMediaPlayerControl::volume() const
Returns the audio volume of a player control.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::setVolume(int volume)
Sets the audio \a volume of a player control.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::volumeChanged(int volume)
Signals the audio \a volume of a player control has changed.
\since 1.0
\sa volume()
*/
/*!
\fn QMediaPlayerControl::isMuted() const
Returns the mute state of a player control.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::setMuted(bool mute)
Sets the \a mute state of a player control.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::mutedChanged(bool mute)
Signals a change in the \a mute status of a player control.
\since 1.0
\sa isMuted()
*/
/*!
\fn QMediaPlayerControl::bufferStatus() const
Returns the buffering progress of the current media. Progress is measured in the percentage
of the buffer filled.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::bufferStatusChanged(int progress)
Signals that buffering \a progress has changed.
\since 1.0
\sa bufferStatus()
*/
/*!
\fn QMediaPlayerControl::isAudioAvailable() const
Identifies if there is audio output available for the current media.
Returns true if audio output is available and false otherwise.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::audioAvailableChanged(bool audio)
Signals that there has been a change in the availability of \a audio output.
\since 1.0
\sa isAudioAvailable()
*/
/*!
\fn QMediaPlayerControl::isVideoAvailable() const
Identifies if there is video output available for the current media.
Returns true if video output is available and false otherwise.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::videoAvailableChanged(bool video)
Signals that there has been a change in the availability of \a video output.
\since 1.0
\sa isVideoAvailable()
*/
/*!
\fn QMediaPlayerControl::isSeekable() const
Identifies if the current media is seekable.
Returns true if it possible to seek within the current media, and false otherwise.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::seekableChanged(bool seekable)
Signals that the \a seekable state of a player control has changed.
\since 1.0
\sa isSeekable()
*/
/*!
\fn QMediaPlayerControl::availablePlaybackRanges() const
Returns a range of times in milliseconds that can be played back.
Usually for local files this is a continuous interval equal to [0..duration()]
or an empty time range if seeking is not supported, but for network sources
it refers to the buffered parts of the media.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::availablePlaybackRangesChanged(const QMediaTimeRange &ranges)
Signals that the available media playback \a ranges have changed.
\since 1.0
\sa QMediaPlayerControl::availablePlaybackRanges()
*/
/*!
\fn qreal QMediaPlayerControl::playbackRate() const
Returns the rate of playback.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::setPlaybackRate(qreal rate)
Sets the \a rate of playback.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::media() const
Returns the current media source.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::mediaStream() const
Returns the current media stream. This is only a valid if a stream was passed to setMedia().
\since 1.0
\sa setMedia()
*/
/*!
\fn QMediaPlayerControl::setMedia(const QMediaContent &media, QIODevice *stream)
Sets the current \a media source. If a \a stream is supplied; data will be read from that
instead of attempting to resolve the media source. The media source may still be used to
supply media information such as mime type.
Setting the media to a null QMediaContent will cause the control to discard all
information relating to the current media source and to cease all I/O operations related
to that media.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::mediaChanged(const QMediaContent& content)
Signals that the current media \a content has changed.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::play()
Starts playback of the current media.
If successful the player control will immediately enter the \l {QMediaPlayer::PlayingState}
{playing} state.
\since 1.0
\sa state()
*/
/*!
\fn QMediaPlayerControl::pause()
Pauses playback of the current media.
If sucessful the player control will immediately enter the \l {QMediaPlayer::PausedState}
{paused} state.
\since 1.0
\sa state(), play(), stop()
*/
/*!
\fn QMediaPlayerControl::stop()
Stops playback of the current media.
If successful the player control will immediately enter the \l {QMediaPlayer::StoppedState}
{stopped} state.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::error(int error, const QString &errorString)
Signals that an \a error has occurred. The \a errorString provides a more detailed explanation.
\since 1.0
*/
/*!
\fn QMediaPlayerControl::playbackRateChanged(qreal rate)
Signal emitted when playback rate changes to \a rate.
\since 1.0
*/
#include "moc_qmediaplayercontrol.cpp"
QT_END_NAMESPACE