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Diffstat (limited to 'src/multimedia/mediaservices/base/qmediaplaylist.cpp')
| -rw-r--r-- | src/multimedia/mediaservices/base/qmediaplaylist.cpp | 724 |
1 files changed, 0 insertions, 724 deletions
diff --git a/src/multimedia/mediaservices/base/qmediaplaylist.cpp b/src/multimedia/mediaservices/base/qmediaplaylist.cpp deleted file mode 100644 index 93278fe..0000000 --- a/src/multimedia/mediaservices/base/qmediaplaylist.cpp +++ /dev/null @@ -1,724 +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/qlist.h> -#include <QtCore/qfile.h> -#include <QtCore/qurl.h> -#include <QtCore/qcoreevent.h> -#include <QtCore/qcoreapplication.h> - -#include <QtMediaServices/qmediaplaylist.h> -#include "qmediaplaylist_p.h" -#include <QtMediaServices/qmediaplaylistprovider.h> -#include <QtMediaServices/qlocalmediaplaylistprovider.h> -#include <QtMediaServices/qmediaplaylistioplugin.h> -#include <QtMediaServices/qmediaservice.h> -#include <QtMediaServices/qmediaplaylistcontrol.h> -#include <QtMediaServices/qmediaplayercontrol.h> - -#include "qmediapluginloader_p.h" - - -QT_BEGIN_NAMESPACE - -Q_GLOBAL_STATIC_WITH_ARGS(QMediaPluginLoader, playlistIOLoader, - (QMediaPlaylistIOInterface_iid, QLatin1String("/playlistformats"), Qt::CaseInsensitive)) - - -/*! - \class QMediaPlaylist - \ingroup multimedia - \since 4.7 - - \preliminary - \brief The QMediaPlaylist class provides a list of media content to play. - - QMediaPlaylist is intended to be used with other media objects, - like QMediaPlayer or QMediaImageViewer. - QMediaPlaylist allows to access the service intrinsic playlist functionality - if available, otherwise it provides the the local memory playlist implementation. - -\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")); - playlist->append(QUrl("http://example.com/movie3.mp4")); - - playlist->setCurrentIndex(1); - - player->play(); -\endcode - - Depending on playlist source implementation, - most of playlist modifcation operations can be asynchronous. - - \sa QMediaContent -*/ - - -/*! - \enum QMediaPlaylist::PlaybackMode - - The QMediaPlaylist::PlaybackMode describes the order items in playlist are played. - - \value CurrentItemOnce The current item is played only once. - - \value CurrentItemInLoop The current item is played in the loop. - - \value Linear Playback starts from the first to the last items and stops. - next item is a null item when the last one is currently playing. - - \value Loop Playback continues from the first item after the last one finished playing. - - \value Random Play items in random order. -*/ - - - -/*! - Create a new playlist object for with the given \a parent. -*/ - -QMediaPlaylist::QMediaPlaylist(QObject *parent) - : QObject(parent) - , d_ptr(new QMediaPlaylistPrivate) -{ - Q_D(QMediaPlaylist); - - d->q_ptr = this; - d->localPlaylistControl = new QLocalMediaPlaylistControl(this); - - setMediaObject(0); -} - -/*! - Destroys the playlist. - */ - -QMediaPlaylist::~QMediaPlaylist() -{ - Q_D(QMediaPlaylist); - - if (d->mediaObject) - d->mediaObject->unbind(this); - - delete d_ptr; -} - -/*! - Returns the QMediaObject that is being used to play the contents of this playlist. -*/ - -QMediaObject *QMediaPlaylist::mediaObject() const -{ - return d_func()->mediaObject; -} - -/*! - If \a mediaObject is null or doesn't have an intrinsic playlist, - internal local memory playlist source will be created. -*/ -void QMediaPlaylist::setMediaObject(QMediaObject *mediaObject) -{ - Q_D(QMediaPlaylist); - - if (mediaObject && mediaObject == d->mediaObject) - return; - - QMediaService *service = mediaObject - ? mediaObject->service() : 0; - - QMediaPlaylistControl *newControl = 0; - - if (service) - newControl = qobject_cast<QMediaPlaylistControl*>(service->control(QMediaPlaylistControl_iid)); - - if (!newControl) - newControl = d->localPlaylistControl; - - if (d->control != newControl) { - int oldSize = 0; - if (d->control) { - QMediaPlaylistProvider *playlist = d->control->playlistProvider(); - oldSize = playlist->mediaCount(); - disconnect(playlist, SIGNAL(loadFailed(QMediaPlaylist::Error,QString)), - this, SLOT(_q_loadFailed(QMediaPlaylist::Error,QString))); - - disconnect(playlist, SIGNAL(mediaChanged(int,int)), this, SIGNAL(mediaChanged(int,int))); - disconnect(playlist, SIGNAL(mediaAboutToBeInserted(int,int)), this, SIGNAL(mediaAboutToBeInserted(int,int))); - disconnect(playlist, SIGNAL(mediaInserted(int,int)), this, SIGNAL(mediaInserted(int,int))); - disconnect(playlist, SIGNAL(mediaAboutToBeRemoved(int,int)), this, SIGNAL(mediaAboutToBeRemoved(int,int))); - disconnect(playlist, SIGNAL(mediaRemoved(int,int)), this, SIGNAL(mediaRemoved(int,int))); - - disconnect(playlist, SIGNAL(loaded()), this, SIGNAL(loaded())); - - disconnect(d->control, SIGNAL(playbackModeChanged(QMediaPlaylist::PlaybackMode)), - this, SIGNAL(playbackModeChanged(QMediaPlaylist::PlaybackMode))); - disconnect(d->control, SIGNAL(currentIndexChanged(int)), - this, SIGNAL(currentIndexChanged(int))); - disconnect(d->control, SIGNAL(currentMediaChanged(QMediaContent)), - this, SIGNAL(currentMediaChanged(QMediaContent))); - } - - d->control = newControl; - QMediaPlaylistProvider *playlist = d->control->playlistProvider(); - connect(playlist, SIGNAL(loadFailed(QMediaPlaylist::Error,QString)), - this, SLOT(_q_loadFailed(QMediaPlaylist::Error,QString))); - - connect(playlist, SIGNAL(mediaChanged(int,int)), this, SIGNAL(mediaChanged(int,int))); - connect(playlist, SIGNAL(mediaAboutToBeInserted(int,int)), this, SIGNAL(mediaAboutToBeInserted(int,int))); - connect(playlist, SIGNAL(mediaInserted(int,int)), this, SIGNAL(mediaInserted(int,int))); - connect(playlist, SIGNAL(mediaAboutToBeRemoved(int,int)), this, SIGNAL(mediaAboutToBeRemoved(int,int))); - connect(playlist, SIGNAL(mediaRemoved(int,int)), this, SIGNAL(mediaRemoved(int,int))); - - connect(playlist, SIGNAL(loaded()), this, SIGNAL(loaded())); - - connect(d->control, SIGNAL(playbackModeChanged(QMediaPlaylist::PlaybackMode)), - this, SIGNAL(playbackModeChanged(QMediaPlaylist::PlaybackMode))); - connect(d->control, SIGNAL(currentIndexChanged(int)), - this, SIGNAL(currentIndexChanged(int))); - connect(d->control, SIGNAL(currentMediaChanged(QMediaContent)), - this, SIGNAL(currentMediaChanged(QMediaContent))); - - if (oldSize) - emit mediaRemoved(0, oldSize-1); - - if (playlist->mediaCount()) { - emit mediaAboutToBeInserted(0,playlist->mediaCount()-1); - emit mediaInserted(0,playlist->mediaCount()-1); - } - } - - if (d->mediaObject) - d->mediaObject->unbind(this); - - d->mediaObject = mediaObject; - if (d->mediaObject) - d->mediaObject->bind(this); -} - -/*! - \property QMediaPlaylist::playbackMode - - This property defines the order, items in playlist are played. - - \sa QMediaPlaylist::PlaybackMode -*/ - -QMediaPlaylist::PlaybackMode QMediaPlaylist::playbackMode() const -{ - return d_func()->control->playbackMode(); -} - -void QMediaPlaylist::setPlaybackMode(QMediaPlaylist::PlaybackMode mode) -{ - Q_D(QMediaPlaylist); - d->control->setPlaybackMode(mode); -} - -/*! - Returns position of the current media source in the playlist. -*/ -int QMediaPlaylist::currentIndex() const -{ - return d_func()->control->currentIndex(); -} - -/*! - Returns the current media content. -*/ - -QMediaContent QMediaPlaylist::currentMedia() const -{ - return d_func()->playlist()->media(currentIndex()); -} - -/*! - Returns the index of item, which were current after calling next() - \a steps times. - - Returned value depends on the size of playlist, current position - and playback mode. - - \sa QMediaPlaylist::playbackMode -*/ -int QMediaPlaylist::nextIndex(int steps) const -{ - return d_func()->control->nextIndex(steps); -} - -/*! - Returns the index of item, which were current after calling previous() - \a steps times. - - \sa QMediaPlaylist::playbackMode -*/ - -int QMediaPlaylist::previousIndex(int steps) const -{ - return d_func()->control->previousIndex(steps); -} - - -/*! - Returns the number of items in the playlist. - - \sa isEmpty() - */ -int QMediaPlaylist::mediaCount() const -{ - return d_func()->playlist()->mediaCount(); -} - -/*! - Returns true if the playlist contains no items; otherwise returns false. - \sa mediaCount() - */ -bool QMediaPlaylist::isEmpty() const -{ - return mediaCount() == 0; -} - -/*! - Returns true if the playlist can be modified; otherwise returns false. - \sa mediaCount() - */ -bool QMediaPlaylist::isReadOnly() const -{ - return d_func()->playlist()->isReadOnly(); -} - -/*! - Returns the media content at \a index in the playlist. -*/ - -QMediaContent QMediaPlaylist::media(int index) const -{ - return d_func()->playlist()->media(index); -} - -/*! - Append the media \a content to the playlist. - - Returns true if the operation is successfull, other wise return false. - */ -bool QMediaPlaylist::addMedia(const QMediaContent &content) -{ - return d_func()->control->playlistProvider()->addMedia(content); -} - -/*! - Append multiple media content \a items to the playlist. - - Returns true if the operation is successfull, other wise return false. - */ -bool QMediaPlaylist::addMedia(const QList<QMediaContent> &items) -{ - return d_func()->control->playlistProvider()->addMedia(items); -} - -/*! - Insert the media \a content to the playlist at position \a pos. - - Returns true if the operation is successful, otherwise false. -*/ - -bool QMediaPlaylist::insertMedia(int pos, const QMediaContent &content) -{ - return d_func()->playlist()->insertMedia(pos, content); -} - -/*! - Insert multiple media content \a items to the playlist at position \a pos. - - Returns true if the operation is successful, otherwise false. -*/ - -bool QMediaPlaylist::insertMedia(int pos, const QList<QMediaContent> &items) -{ - return d_func()->playlist()->insertMedia(pos, items); -} - -/*! - Remove the item from the playlist at position \a pos. - - Returns true if the operation is successfull, other wise return false. - */ -bool QMediaPlaylist::removeMedia(int pos) -{ - Q_D(QMediaPlaylist); - return d->playlist()->removeMedia(pos); -} - -/*! - Remove the items from the playlist from position \a start to \a end inclusive. - - Returns true if the operation is successfull, other wise return false. - */ -bool QMediaPlaylist::removeMedia(int start, int end) -{ - Q_D(QMediaPlaylist); - return d->playlist()->removeMedia(start, end); -} - -/*! - Remove all the items from the playlist. - - Returns true if the operation is successfull, other wise return false. - */ -bool QMediaPlaylist::clear() -{ - Q_D(QMediaPlaylist); - return d->playlist()->clear(); -} - -bool QMediaPlaylistPrivate::readItems(QMediaPlaylistReader *reader) -{ - while (!reader->atEnd()) - playlist()->addMedia(reader->readItem()); - - return true; -} - -bool QMediaPlaylistPrivate::writeItems(QMediaPlaylistWriter *writer) -{ - for (int i=0; i<playlist()->mediaCount(); i++) { - if (!writer->writeItem(playlist()->media(i))) - return false; - } - writer->close(); - return true; -} - -/*! - Load playlist from \a location. If \a format is specified, it is used, - otherwise format is guessed from location name and data. - - New items are appended to playlist. - - QMediaPlaylist::loaded() signal is emited if playlist was loaded succesfully, - otherwise the playlist emits loadFailed(). -*/ -void QMediaPlaylist::load(const QUrl &location, const char *format) -{ - Q_D(QMediaPlaylist); - - d->error = NoError; - d->errorString.clear(); - - if (d->playlist()->load(location,format)) - return; - - if (isReadOnly()) { - d->error = AccessDeniedError; - d->errorString = tr("Could not add items to read only playlist."); - emit loadFailed(); - return; - } - - foreach (QString const& key, playlistIOLoader()->keys()) { - QMediaPlaylistIOInterface* plugin = qobject_cast<QMediaPlaylistIOInterface*>(playlistIOLoader()->instance(key)); - if (plugin && plugin->canRead(location,format)) { - QMediaPlaylistReader *reader = plugin->createReader(location,QByteArray(format)); - if (reader && d->readItems(reader)) { - delete reader; - emit loaded(); - return; - } - delete reader; - } - } - - d->error = FormatNotSupportedError; - d->errorString = tr("Playlist format is not supported"); - emit loadFailed(); - - return; -} - -/*! - Load playlist from QIODevice \a device. If \a format is specified, it is used, - otherwise format is guessed from device data. - - New items are appended to playlist. - - QMediaPlaylist::loaded() signal is emited if playlist was loaded succesfully, - otherwise the playlist emits loadFailed(). -*/ -void QMediaPlaylist::load(QIODevice * device, const char *format) -{ - Q_D(QMediaPlaylist); - - d->error = NoError; - d->errorString.clear(); - - if (d->playlist()->load(device,format)) - return; - - if (isReadOnly()) { - d->error = AccessDeniedError; - d->errorString = tr("Could not add items to read only playlist."); - emit loadFailed(); - return; - } - - foreach (QString const& key, playlistIOLoader()->keys()) { - QMediaPlaylistIOInterface* plugin = qobject_cast<QMediaPlaylistIOInterface*>(playlistIOLoader()->instance(key)); - if (plugin && plugin->canRead(device,format)) { - QMediaPlaylistReader *reader = plugin->createReader(device,QByteArray(format)); - if (reader && d->readItems(reader)) { - delete reader; - emit loaded(); - return; - } - delete reader; - } - } - - d->error = FormatNotSupportedError; - d->errorString = tr("Playlist format is not supported"); - emit loadFailed(); - - return; -} - -/*! - Save playlist to \a location. If \a format is specified, it is used, - otherwise format is guessed from location name. - - Returns true if playlist was saved succesfully, otherwise returns false. - */ -bool QMediaPlaylist::save(const QUrl &location, const char *format) -{ - Q_D(QMediaPlaylist); - - d->error = NoError; - d->errorString.clear(); - - if (d->playlist()->save(location,format)) - return true; - - QFile file(location.toLocalFile()); - - if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate)) { - d->error = AccessDeniedError; - d->errorString = tr("The file could not be accessed."); - return false; - } - - return save(&file, format); -} - -/*! - Save playlist to QIODevice \a device using format \a format. - - Returns true if playlist was saved succesfully, otherwise returns false. -*/ -bool QMediaPlaylist::save(QIODevice * device, const char *format) -{ - Q_D(QMediaPlaylist); - - d->error = NoError; - d->errorString.clear(); - - if (d->playlist()->save(device,format)) - return true; - - foreach (QString const& key, playlistIOLoader()->keys()) { - QMediaPlaylistIOInterface* plugin = qobject_cast<QMediaPlaylistIOInterface*>(playlistIOLoader()->instance(key)); - if (plugin && plugin->canWrite(device,format)) { - QMediaPlaylistWriter *writer = plugin->createWriter(device,QByteArray(format)); - if (writer && d->writeItems(writer)) { - delete writer; - return true; - } - delete writer; - } - } - - d->error = FormatNotSupportedError; - d->errorString = tr("Playlist format is not supported."); - - return false; -} - -/*! - Returns the last error condition. -*/ -QMediaPlaylist::Error QMediaPlaylist::error() const -{ - return d_func()->error; -} - -/*! - Returns the string describing the last error condition. -*/ -QString QMediaPlaylist::errorString() const -{ - return d_func()->errorString; -} - -/*! - Shuffle items in the playlist. -*/ -void QMediaPlaylist::shuffle() -{ - d_func()->playlist()->shuffle(); -} - - -/*! - Advance to the next media content in playlist. -*/ -void QMediaPlaylist::next() -{ - d_func()->control->next(); -} - -/*! - Return to the previous media content in playlist. -*/ -void QMediaPlaylist::previous() -{ - d_func()->control->previous(); -} - -/*! - Activate media content from playlist at position \a playlistPosition. -*/ - -void QMediaPlaylist::setCurrentIndex(int playlistPosition) -{ - d_func()->control->setCurrentIndex(playlistPosition); -} - -/*! - \fn void QMediaPlaylist::mediaInserted(int start, int end) - - This signal is emitted after media has been inserted into the playlist. - The new items are those between \a start and \a end inclusive. - */ - -/*! - \fn void QMediaPlaylist::mediaRemoved(int start, int end) - - This signal is emitted after media has been removed from the playlist. - The removed items are those between \a start and \a end inclusive. - */ - -/*! - \fn void QMediaPlaylist::mediaChanged(int start, int end) - - This signal is emitted after media has been changed in the playlist - between \a start and \a end positions inclusive. - */ - -/*! - \fn void QMediaPlaylist::currentIndexChanged(int position) - - Signal emitted when playlist position changed to \a position. -*/ - -/*! - \fn void QMediaPlaylist::playbackModeChanged(QMediaPlaylist::PlaybackMode mode) - - Signal emitted when playback mode changed to \a mode. -*/ - -/*! - \fn void QMediaPlaylist::mediaAboutToBeInserted(int start, int end) - - Signal emitted when item to be inserted at \a start and ending at \a end. -*/ - -/*! - \fn void QMediaPlaylist::mediaAboutToBeRemoved(int start, int end) - - Signal emitted when item to de deleted ar \a start and ending at \a end. -*/ - -/*! - \fn void QMediaPlaylist::currentMediaChanged(const QMediaContent &content) - - Signal emitted when current media changes to \a content. -*/ - -/*! - \property QMediaPlaylist::currentIndex - \brief Current position. -*/ - -/*! - \property QMediaPlaylist::currentMedia - \brief Current media content. -*/ - -/*! - \fn QMediaPlaylist::loaded() - - Signal emitted when playlist finished loading. -*/ - -/*! - \fn QMediaPlaylist::loadFailed() - - Signal emitted if failed to load playlist. -*/ - -/*! - \enum QMediaPlaylist::Error - - This enum describes the QMediaPlaylist error codes. - - \value NoError No errors. - \value FormatError Format error. - \value FormatNotSupportedError Format not supported. - \value NetworkError Network error. - \value AccessDeniedError Access denied error. -*/ - -QT_END_NAMESPACE - -#include "moc_qmediaplaylist.cpp" -#include "moc_qmediaplaylist_p.cpp" |