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Diffstat (limited to 'src/multimedia/mediaservices/playback/qmediaplayer.cpp')
| -rw-r--r-- | src/multimedia/mediaservices/playback/qmediaplayer.cpp | 996 |
1 files changed, 0 insertions, 996 deletions
diff --git a/src/multimedia/mediaservices/playback/qmediaplayer.cpp b/src/multimedia/mediaservices/playback/qmediaplayer.cpp deleted file mode 100644 index ca1f250..0000000 --- a/src/multimedia/mediaservices/playback/qmediaplayer.cpp +++ /dev/null @@ -1,996 +0,0 @@ -/**************************************************************************** -** -** 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 QtMediaServices module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, 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. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QtCore/qcoreevent.h> -#include <QtCore/qmetaobject.h> -#include <QtCore/qtimer.h> -#include <QtCore/qpointer.h> -#include <QtCore/qdebug.h> - -#include <QtMediaServices/qmediaplayer.h> - -#include <QtMediaServices/private/qmediaobject_p.h> -#include <QtMediaServices/qmediaservice.h> -#include <QtMediaServices/qmediaplayercontrol.h> -#include <QtMediaServices/qmediaserviceprovider.h> -#include <QtMediaServices/qmediaplaylist.h> -#include <QtMediaServices/qmediaplaylistcontrol.h> -#include <QtMediaServices/qvideowidget.h> -#include <QtMediaServices/qgraphicsvideoitem.h> - -//#define DEBUG_PLAYER_STATE - -QT_BEGIN_HEADER - -QT_BEGIN_NAMESPACE - -QT_MODULE(Multimedia) - -/*! - \class QMediaPlayer - \brief The QMediaPlayer class allows the playing of a media source. - \ingroup multimedia - \since 4.7 - \preliminary - - The QMediaPlayer class is a high level media playback class. It can be used - to playback such content as songs, movies and internet radio. The content - to playback is specified as a QMediaContent, which can be thought of as a - main or canonical URL with addition information attached. When provided - with a QMediaContent playback may be able to commence. - - \code - player = new QMediaPlayer; - connect(player, SIGNAL(positionChanged(qint64)), this, SLOT(positionChanged(qint64))); - player->setMedia(QUrl::fromLocalFile("/Users/me/Music/coolsong.mp3")); - player->setVolume(50); - player->play(); - \endcode - - QVideoWidget can be used with QMediaPlayer for video rendering and QMediaPlaylist - for accessing playlist functionality. - - \code - player = new QMediaPlayer; - - playlist = new QMediaPlaylist; - playlist->setMediaObject(player); - playlist->append(QUrl("http://example.com/movie1.mp4")); - playlist->append(QUrl("http://example.com/movie2.mp4")); - - widget = new QVideoWidget; - widget->setMediaObject(player); - widget->show(); - - player->play(); - \endcode - - \sa QMediaObject, QMediaService, QVideoWidget, QMediaPlaylist -*/ - -namespace -{ -class MediaPlayerRegisterMetaTypes -{ -public: - MediaPlayerRegisterMetaTypes() - { - qRegisterMetaType<QMediaPlayer::State>(); - qRegisterMetaType<QMediaPlayer::MediaStatus>(); - qRegisterMetaType<QMediaPlayer::Error>(); - } -} _registerPlayerMetaTypes; -} - -class QMediaPlayerPrivate : public QMediaObjectPrivate -{ - Q_DECLARE_NON_CONST_PUBLIC(QMediaPlayer) - -public: - QMediaPlayerPrivate() - : provider(0) - , control(0) - , playlistControl(0) - , state(QMediaPlayer::StoppedState) - , error(QMediaPlayer::NoError) - , filterStates(false) - , playlist(0) - {} - - QMediaServiceProvider *provider; - QMediaPlayerControl* control; - QMediaPlaylistControl* playlistControl; - QMediaPlayer::State state; - QMediaPlayer::Error error; - QString errorString; - bool filterStates; - - QMediaPlaylist *playlist; - QPointer<QVideoWidget> videoWidget; -#ifndef QT_NO_GRAPHICSVIEW - QPointer<QGraphicsVideoItem> videoItem; -#endif - - void _q_stateChanged(QMediaPlayer::State state); - void _q_mediaStatusChanged(QMediaPlayer::MediaStatus status); - void _q_error(int error, const QString &errorString); - void _q_updateMedia(const QMediaContent&); - void _q_playlistDestroyed(); -}; - -#define ENUM_NAME(c,e,v) (c::staticMetaObject.enumerator(c::staticMetaObject.indexOfEnumerator(e)).valueToKey((v))) - -void QMediaPlayerPrivate::_q_stateChanged(QMediaPlayer::State ps) -{ - Q_Q(QMediaPlayer); - -#ifdef DEBUG_PLAYER_STATE - qDebug() << "State changed:" << ENUM_NAME(QMediaPlayer, "State", ps) << (filterStates ? "(filtered)" : ""); -#endif - - if (filterStates) - return; - - if (playlist - && !playlistControl //service should do this itself - && ps != state && ps == QMediaPlayer::StoppedState - && control->mediaStatus() == QMediaPlayer::EndOfMedia) { - playlist->next(); - ps = control->state(); - } - - if (ps != state) { - state = ps; - - if (ps == QMediaPlayer::PlayingState) - q->addPropertyWatch("position"); - else - q->removePropertyWatch("position"); - - emit q->stateChanged(ps); - } -} - -void QMediaPlayerPrivate::_q_mediaStatusChanged(QMediaPlayer::MediaStatus status) -{ - Q_Q(QMediaPlayer); - -#ifdef DEBUG_PLAYER_STATE - qDebug() << "MediaStatus changed:" << ENUM_NAME(QMediaPlayer, "MediaStatus", status); -#endif - - switch (status) { - case QMediaPlayer::StalledMedia: - case QMediaPlayer::BufferingMedia: - q->addPropertyWatch("bufferStatus"); - emit q->mediaStatusChanged(status); - break; - default: - q->removePropertyWatch("bufferStatus"); - emit q->mediaStatusChanged(status); - break; - } - -} - -void QMediaPlayerPrivate::_q_error(int error, const QString &errorString) -{ - Q_Q(QMediaPlayer); - - this->error = QMediaPlayer::Error(error); - this->errorString = errorString; - - emit q->error(this->error); -} - -void QMediaPlayerPrivate::_q_updateMedia(const QMediaContent &media) -{ - const QMediaPlayer::State currentState = state; - - filterStates = true; - control->setMedia(media, 0); - - if (!media.isNull()) { - switch (currentState) { - case QMediaPlayer::PlayingState: - control->play(); - break; - case QMediaPlayer::PausedState: - control->pause(); - break; - default: - break; - } - } - filterStates = false; - - state = control->state(); - - if (state != currentState) { -#ifdef DEBUG_PLAYER_STATE - qDebug() << "State changed:" << ENUM_NAME(QMediaPlayer, "State", state); -#endif - emit q_func()->stateChanged(state); - } -} - -void QMediaPlayerPrivate::_q_playlistDestroyed() -{ - playlist = 0; - - control->setMedia(QMediaContent(), 0); -} - -static QMediaService *playerService(QMediaPlayer::Flags flags, QMediaServiceProvider *provider) -{ - if (flags) { - QMediaServiceProviderHint::Features features = 0; - if (flags & QMediaPlayer::LowLatency) - features |= QMediaServiceProviderHint::LowLatencyPlayback; - - if (flags & QMediaPlayer::StreamPlayback) - features |= QMediaServiceProviderHint::StreamPlayback; - - return provider->requestService(Q_MEDIASERVICE_MEDIAPLAYER, - QMediaServiceProviderHint(features)); - } else - return provider->requestService(Q_MEDIASERVICE_MEDIAPLAYER); -} - - -/*! - Construct a QMediaPlayer that uses the playback service from \a provider, - parented to \a parent and with \a flags. - - If a playback service is not specified the system default will be used. -*/ - -QMediaPlayer::QMediaPlayer(QObject *parent, QMediaPlayer::Flags flags, QMediaServiceProvider *provider): - QMediaObject(*new QMediaPlayerPrivate, - parent, - playerService(flags,provider)) -{ - Q_D(QMediaPlayer); - - d->provider = provider; - - if (d->service == 0) { - d->error = ServiceMissingError; - } else { - d->control = qobject_cast<QMediaPlayerControl*>(d->service->control(QMediaPlayerControl_iid)); - d->playlistControl = qobject_cast<QMediaPlaylistControl*>(d->service->control(QMediaPlaylistControl_iid)); - if (d->control != 0) { - connect(d->control, SIGNAL(mediaChanged(QMediaContent)), SIGNAL(mediaChanged(QMediaContent))); - connect(d->control, SIGNAL(stateChanged(QMediaPlayer::State)), SLOT(_q_stateChanged(QMediaPlayer::State))); - connect(d->control, SIGNAL(mediaStatusChanged(QMediaPlayer::MediaStatus)), - SLOT(_q_mediaStatusChanged(QMediaPlayer::MediaStatus))); - connect(d->control, SIGNAL(error(int,QString)), SLOT(_q_error(int,QString))); - - connect(d->control, SIGNAL(durationChanged(qint64)), SIGNAL(durationChanged(qint64))); - connect(d->control, SIGNAL(positionChanged(qint64)), SIGNAL(positionChanged(qint64))); - connect(d->control, SIGNAL(audioAvailableChanged(bool)), SIGNAL(audioAvailableChanged(bool))); - connect(d->control, SIGNAL(videoAvailableChanged(bool)), SIGNAL(videoAvailableChanged(bool))); - connect(d->control, SIGNAL(volumeChanged(int)), SIGNAL(volumeChanged(int))); - connect(d->control, SIGNAL(mutedChanged(bool)), SIGNAL(mutedChanged(bool))); - connect(d->control, SIGNAL(seekableChanged(bool)), SIGNAL(seekableChanged(bool))); - connect(d->control, SIGNAL(playbackRateChanged(qreal)), SIGNAL(playbackRateChanged(qreal))); - - if (d->control->state() == PlayingState) - addPropertyWatch("position"); - - if (d->control->mediaStatus() == StalledMedia || d->control->mediaStatus() == BufferingMedia) - addPropertyWatch("bufferStatus"); - } - } -} - - -/*! - Destroys the player object. -*/ - -QMediaPlayer::~QMediaPlayer() -{ - Q_D(QMediaPlayer); - - d->provider->releaseService(d->service); -} - -QMediaContent QMediaPlayer::media() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->media(); - - return QMediaContent(); -} - -/*! - Returns the stream source of media data. - - This is only valid if a stream was passed to setMedia(). - - \sa setMedia() -*/ - -const QIODevice *QMediaPlayer::mediaStream() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->mediaStream(); - - return 0; -} - -QMediaPlayer::State QMediaPlayer::state() const -{ - return d_func()->state; -} - -QMediaPlayer::MediaStatus QMediaPlayer::mediaStatus() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->mediaStatus(); - - return QMediaPlayer::UnknownMediaStatus; -} - -qint64 QMediaPlayer::duration() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->duration(); - - return -1; -} - -qint64 QMediaPlayer::position() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->position(); - - return 0; -} - -int QMediaPlayer::volume() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->volume(); - - return 0; -} - -bool QMediaPlayer::isMuted() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->isMuted(); - - return false; -} - -int QMediaPlayer::bufferStatus() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->bufferStatus(); - - return 0; -} - -bool QMediaPlayer::isAudioAvailable() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->isAudioAvailable(); - - return false; -} - -bool QMediaPlayer::isVideoAvailable() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->isVideoAvailable(); - - return false; -} - -bool QMediaPlayer::isSeekable() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->isSeekable(); - - return false; -} - -qreal QMediaPlayer::playbackRate() const -{ - Q_D(const QMediaPlayer); - - if (d->control != 0) - return d->control->playbackRate(); - - return 0.0; -} - -/*! - Returns the current error state. -*/ - -QMediaPlayer::Error QMediaPlayer::error() const -{ - return d_func()->error; -} - -QString QMediaPlayer::errorString() const -{ - return d_func()->errorString; -} - -//public Q_SLOTS: -/*! - Start or resume playing the current source. -*/ - -void QMediaPlayer::play() -{ - Q_D(QMediaPlayer); - - if (d->control == 0) { - QMetaObject::invokeMethod(this, "_q_error", Qt::QueuedConnection, - Q_ARG(int, QMediaPlayer::ServiceMissingError), - Q_ARG(QString, tr("The QMediaPlayer object does not have a valid service"))); - return; - } - - //if playlist control is available, the service should advance itself - if (d->playlist && !d->playlistControl && d->playlist->currentIndex() == -1 && !d->playlist->isEmpty()) - d->playlist->setCurrentIndex(0); - - // Reset error conditions - d->error = NoError; - d->errorString = QString(); - - d->control->play(); -} - -/*! - Pause playing the current source. -*/ - -void QMediaPlayer::pause() -{ - Q_D(QMediaPlayer); - - if (d->control != 0) - d->control->pause(); -} - -/*! - Stop playing, and reset the play position to the beginning. -*/ - -void QMediaPlayer::stop() -{ - Q_D(QMediaPlayer); - - if (d->control != 0) - d->control->stop(); -} - -void QMediaPlayer::setPosition(qint64 position) -{ - Q_D(QMediaPlayer); - - if (d->control == 0 || !isSeekable()) - return; - - d->control->setPosition(qBound(qint64(0), duration(), position)); -} - -void QMediaPlayer::setVolume(int v) -{ - Q_D(QMediaPlayer); - - if (d->control == 0) - return; - - int clamped = qBound(0, v, 100); - if (clamped == volume()) - return; - - d->control->setVolume(clamped); -} - -void QMediaPlayer::setMuted(bool muted) -{ - Q_D(QMediaPlayer); - - if (d->control == 0 || muted == isMuted()) - return; - - d->control->setMuted(muted); -} - -void QMediaPlayer::setPlaybackRate(qreal rate) -{ - Q_D(QMediaPlayer); - - if (d->control != 0) - d->control->setPlaybackRate(rate); -} - -/*! - Sets the current \a media source. - - If a \a stream is supplied; media data will be read from it instead of resolving the media - source. In this case the media source may still be used to resolve additional information - about the media such as mime type. - - Setting the media to a null QMediaContent will cause the player to discard all - information relating to the current media source and to cease all I/O operations related - to that media. -*/ - -void QMediaPlayer::setMedia(const QMediaContent &media, QIODevice *stream) -{ - Q_D(QMediaPlayer); - - if (d->control != 0) - d_func()->control->setMedia(media, stream); -} - -/*! - \internal -*/ - -void QMediaPlayer::bind(QObject *obj) -{ - Q_D(QMediaPlayer); - - if (d->control != 0) { - QMediaPlaylist *playlist = qobject_cast<QMediaPlaylist*>(obj); - - if (playlist) { - if (d->playlist) - d->playlist->setMediaObject(0); - - d->playlist = playlist; - connect(d->playlist, SIGNAL(currentMediaChanged(QMediaContent)), - this, SLOT(_q_updateMedia(QMediaContent))); - connect(d->playlist, SIGNAL(destroyed()), this, SLOT(_q_playlistDestroyed())); - - setMedia(playlist->currentMedia()); - - return; - } - - QVideoWidget *videoWidget = qobject_cast<QVideoWidget*>(obj); -#ifndef QT_NO_GRAPHICSVIEW - QGraphicsVideoItem *videoItem = qobject_cast<QGraphicsVideoItem*>(obj); -#endif - - if (videoWidget -#ifndef QT_NO_GRAPHICSVIEW - || videoItem -#endif - ) { - //detach the current video output - if (d->videoWidget) { - d->videoWidget->setMediaObject(0); - d->videoWidget = 0; - } - -#ifndef QT_NO_GRAPHICSVIEW - if (d->videoItem) { - d->videoItem->setMediaObject(0); - d->videoItem = 0; - } -#endif - } - - if (videoWidget) - d->videoWidget = videoWidget; - -#ifndef QT_NO_GRAPHICSVIEW - if (videoItem) - d->videoItem = videoItem; -#endif - } -} - -/*! - \internal -*/ - -void QMediaPlayer::unbind(QObject *obj) -{ - Q_D(QMediaPlayer); - - if (obj == d->videoWidget) { - d->videoWidget = 0; -#ifndef QT_NO_GRAPHICSVIEW - } else if (obj == d->videoItem) { - d->videoItem = 0; -#endif - } else if (obj == d->playlist) { - disconnect(d->playlist, SIGNAL(currentMediaChanged(QMediaContent)), - this, SLOT(_q_updateMedia(QMediaContent))); - disconnect(d->playlist, SIGNAL(destroyed()), this, SLOT(_q_playlistDestroyed())); - d->playlist = 0; - setMedia(QMediaContent()); - } -} - -/*! - Returns the level of support a media player has for a \a mimeType and a set of \a codecs. - - The \a flags argument allows additional requirements such as performance indicators to be - specified. -*/ -QtMediaServices::SupportEstimate QMediaPlayer::hasSupport(const QString &mimeType, - const QStringList& codecs, - Flags flags) -{ - return QMediaServiceProvider::defaultServiceProvider()->hasSupport(QByteArray(Q_MEDIASERVICE_MEDIAPLAYER), - mimeType, - codecs, - flags); -} - -/*! - Returns a list of MIME types supported by the media player. - - The \a flags argument causes the resultant list to be restricted to MIME types which can be supported - given additional requirements, such as performance indicators. -*/ -QStringList QMediaPlayer::supportedMimeTypes(Flags flags) -{ - return QMediaServiceProvider::defaultServiceProvider()->supportedMimeTypes(QByteArray(Q_MEDIASERVICE_MEDIAPLAYER), - flags); -} - - -// Enums -/*! - \enum QMediaPlayer::State - - Defines the current state of a media player. - - \value PlayingState The media player is currently playing content. - \value PausedState The media player has paused playback, playback of the current track will - resume from the position the player was paused at. - \value StoppedState The media player is not playing content, playback will begin from the start - of the current track. -*/ - -/*! - \enum QMediaPlayer::MediaStatus - - Defines the status of a media player's current media. - - \value UnknownMediaStatus The status of the media cannot be determined. - \value NoMedia The is no current media. The player is in the StoppedState. - \value LoadingMedia The current media is being loaded. The player may be in any state. - \value LoadedMedia The current media has been loaded. The player is in the StoppedState. - \value StalledMedia Playback of the current media has stalled due to insufficient buffering or - some other temporary interruption. The player is in the PlayingState or PausedState. - \value BufferingMedia The player is buffering data but has enough data buffered for playback to - continue for the immediate future. The player is in the PlayingState or PausedState. - \value BufferedMedia The player has fully buffered the current media. The player is in the - PlayingState or PausedState. - \value EndOfMedia Playback has reached the end of the current media. The player is in the - StoppedState. - \value InvalidMedia The current media cannot be played. The player is in the StoppedState. -*/ - -/*! - \enum QMediaPlayer::Error - - Defines a media player error condition. - - \value NoError No error has occurred. - \value ResourceError A media resource couldn't be resolved. - \value FormatError The format of a media resource isn't (fully) supported. Playback may still - be possible, but without an audio or video component. - \value NetworkError A network error occurred. - \value AccessDeniedError There are not the appropriate permissions to play a media resource. - \value ServiceMissingError A valid playback service was not found, playback cannot proceed. -*/ - -// Signals -/*! - \fn QMediaPlayer::error(QMediaPlayer::Error error) - - Signals that an \a error condition has occurred. - - \sa errorString() -*/ - -/*! - \fn void QMediaPlayer::stateChanged(State state) - - Signal the \a state of the Player object has changed. -*/ - -/*! - \fn QMediaPlayer::mediaStatusChanged(QMediaPlayer::MediaStatus status) - - Signals that the \a status of the current media has changed. - - \sa mediaStatus() -*/ - -/*! - \fn void QMediaPlayer::mediaChanged(const QMediaContent &media); - - Signals that the current playing content will be obtained from \a media. - - \sa media() -*/ - -/*! - \fn void QMediaPlayer::playbackRateChanged(qreal rate); - - Signals the playbackRate has changed to \a rate. -*/ - -/*! - \fn void QMediaPlayer::seekableChanged(bool seekable); - - Signals the \a seekable status of the player object has changed. -*/ - -// Properties -/*! - \property QMediaPlayer::state - \brief the media player's playback state. - - By default this property is QMediaPlayer::Stopped - - \sa mediaStatus(), play(), pause(), stop() -*/ - -/*! - \property QMediaPlayer::error - \brief a string describing the last error condition. - - \sa error() -*/ - -/*! - \property QMediaPlayer::media - \brief the active media source being used by the player object. - - The player object will use the QMediaContent for selection of the content to - be played. - - By default this property has a null QMediaContent. - - Setting this property to a null QMediaContent will cause the player to discard all - information relating to the current media source and to cease all I/O operations related - to that media. - - \sa QMediaContent -*/ - -/*! - \property QMediaPlayer::mediaStatus - \brief the status of the current media stream. - - The stream status describes how the playback of the current stream is - progressing. - - By default this property is QMediaPlayer::NoMedia - - \sa state -*/ - -/*! - \property QMediaPlayer::duration - \brief the duration of the current media. - - The value is the total playback time in milliseconds of the current media. - The value may change across the life time of the QMediaPlayer object and - may not be available when initial playback begins, connect to the - durationChanged() signal to receive status notifications. -*/ - -/*! - \property QMediaPlayer::position - \brief the playback position of the current media. - - The value is the current playback position, expressed in milliseconds since - the beginning of the media. Periodically changes in the position will be - indicated with the signal positionChanged(), the interval between updates - can be set with QMediaObject's method setNotifyInterval(). -*/ - -/*! - \property QMediaPlayer::volume - \brief the current playback volume. - - The playback volume is a linear in effect and the value can range from 0 - - 100, values outside this range will be clamped. -*/ - -/*! - \property QMediaPlayer::muted - \brief the muted state of the current media. - - The value will be true if the playback volume is muted; otherwise false. -*/ - -/*! - \property QMediaPlayer::bufferStatus - \brief the percentage of the temporary buffer filled before playback begins. - - When the player object is buffering; this property holds the percentage of - the temporary buffer that is filled. The buffer will need to reach 100% - filled before playback can resume, at which time the MediaStatus will be - BufferedMedia. - - \sa mediaStatus() -*/ - -/*! - \property QMediaPlayer::audioAvailable - \brief the audio availabilty status for the current media. - - As the life time of QMediaPlayer can be longer than the playback of one - QMediaContent, this property may change over time, the - audioAvailableChanged signal can be used to monitor it's status. -*/ - -/*! - \property QMediaPlayer::videoAvailable - \brief the video availability status for the current media. - - If available, the QVideoWidget class can be used to view the video. As the - life time of QMediaPlayer can be longer than the playback of one - QMediaContent, this property may change over time, the - videoAvailableChanged signal can be used to monitor it's status. - - \sa QVideoWidget, QMediaContent -*/ - -/*! - \property QMediaPlayer::seekable - \brief the seek-able status of the current media - - If seeking is supported this property will be true; false otherwise. The - status of this property may change across the life time of the QMediaPlayer - object, use the seekableChanged signal to monitor changes. -*/ - -/*! - \property QMediaPlayer::playbackRate - \brief the playback rate of the current media. - - This value is a multiplier applied to the media's standard play rate. By - default this value is 1.0, indicating that the media is playing at the - standard pace. Values higher than 1.0 will increase the rate of play. - Values less than zero can be set and indicate the media will rewind at the - multiplier of the standard pace. - - Not all playback services support change of the playback rate. It is - framework defined as to the status and quality of audio and video - while fast forwarding or rewinding. -*/ - -/*! - \fn void QMediaPlayer::durationChanged(qint64 duration) - - Signal the duration of the content has changed to \a duration, expressed in milliseconds. -*/ - -/*! - \fn void QMediaPlayer::positionChanged(qint64 position) - - Signal the position of the content has changed to \a position, expressed in - milliseconds. -*/ - -/*! - \fn void QMediaPlayer::volumeChanged(int volume) - - Signal the playback volume has changed to \a volume. -*/ - -/*! - \fn void QMediaPlayer::mutedChanged(bool muted) - - Signal the mute state has changed to \a muted. -*/ - -/*! - \fn void QMediaPlayer::audioAvailableChanged(bool available) - - Signals the availability of audio content has changed to \a available. -*/ - -/*! - \fn void QMediaPlayer::videoAvailableChanged(bool videoAvailable) - - Signal the availability of visual content has changed to \a videoAvailable. -*/ - -/*! - \fn void QMediaPlayer::bufferStatusChanged(int percentFilled) - - Signal the amount of the local buffer filled as a percentage by \a percentFilled. -*/ - -/*! - \enum QMediaPlayer::Flag - - \value LowLatency - The player is expected to be used with simple audio formats, - but playback should start without significant delay. - Such playback service can be used for beeps, ringtones, etc. - - \value StreamPlayback - The player is expected to play QIODevice based streams. - If passed to QMediaPlayer constructor, the service supporting - streams playback will be choosen. -*/ - -QT_END_NAMESPACE - -QT_END_HEADER - -#include "moc_qmediaplayer.cpp" |