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Diffstat (limited to 'src/multimedia/qmediaplaylistnavigator.cpp')
| -rw-r--r-- | src/multimedia/qmediaplaylistnavigator.cpp | 568 |
1 files changed, 0 insertions, 568 deletions
diff --git a/src/multimedia/qmediaplaylistnavigator.cpp b/src/multimedia/qmediaplaylistnavigator.cpp deleted file mode 100644 index d78e6ef..0000000 --- a/src/multimedia/qmediaplaylistnavigator.cpp +++ /dev/null @@ -1,568 +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 "qmediaplaylistnavigator.h" -#include "qmediaplaylistprovider.h" -#include "qmediaplaylist.h" -#include "qmediaobject_p.h" - -#include <QtCore/qdebug.h> - -QT_BEGIN_NAMESPACE - -class QMediaPlaylistNullProvider : public QMediaPlaylistProvider -{ -public: - QMediaPlaylistNullProvider() :QMediaPlaylistProvider() {} - virtual ~QMediaPlaylistNullProvider() {} - virtual int mediaCount() const {return 0;} - virtual QMediaContent media(int) const { return QMediaContent(); } -}; - -Q_GLOBAL_STATIC(QMediaPlaylistNullProvider, _q_nullMediaPlaylist) - -class QMediaPlaylistNavigatorPrivate -{ - Q_DECLARE_NON_CONST_PUBLIC(QMediaPlaylistNavigator) -public: - QMediaPlaylistNavigatorPrivate() - :playlist(0), - currentPos(-1), - lastValidPos(-1), - playbackMode(QMediaPlaylist::Sequential), - randomPositionsOffset(-1) - { - } - - QMediaPlaylistProvider *playlist; - int currentPos; - int lastValidPos; //to be used with CurrentItemOnce playback mode - QMediaPlaylist::PlaybackMode playbackMode; - QMediaContent currentItem; - - mutable QList<int> randomModePositions; - mutable int randomPositionsOffset; - - int nextItemPos(int steps = 1) const; - int previousItemPos(int steps = 1) const; - - void _q_mediaInserted(int start, int end); - void _q_mediaRemoved(int start, int end); - void _q_mediaChanged(int start, int end); - - QMediaPlaylistNavigator *q_ptr; -}; - - -int QMediaPlaylistNavigatorPrivate::nextItemPos(int steps) const -{ - if (playlist->mediaCount() == 0) - return -1; - - if (steps == 0) - return currentPos; - - switch (playbackMode) { - case QMediaPlaylist::CurrentItemOnce: - return /*currentPos == -1 ? lastValidPos :*/ -1; - case QMediaPlaylist::CurrentItemInLoop: - return currentPos; - case QMediaPlaylist::Sequential: - { - int nextPos = currentPos+steps; - return nextPos < playlist->mediaCount() ? nextPos : -1; - } - case QMediaPlaylist::Loop: - return (currentPos+steps) % playlist->mediaCount(); - case QMediaPlaylist::Random: - { - //TODO: limit the history size - - if (randomPositionsOffset == -1) { - randomModePositions.clear(); - randomModePositions.append(currentPos); - randomPositionsOffset = 0; - } - - while (randomModePositions.size() < randomPositionsOffset+steps+1) - randomModePositions.append(-1); - int res = randomModePositions[randomPositionsOffset+steps]; - if (res<0 || res >= playlist->mediaCount()) { - res = qrand() % playlist->mediaCount(); - randomModePositions[randomPositionsOffset+steps] = res; - } - - return res; - } - } - - return -1; -} - -int QMediaPlaylistNavigatorPrivate::previousItemPos(int steps) const -{ - if (playlist->mediaCount() == 0) - return -1; - - if (steps == 0) - return currentPos; - - switch (playbackMode) { - case QMediaPlaylist::CurrentItemOnce: - return /*currentPos == -1 ? lastValidPos :*/ -1; - case QMediaPlaylist::CurrentItemInLoop: - return currentPos; - case QMediaPlaylist::Sequential: - { - int prevPos = currentPos == -1 ? playlist->mediaCount() - steps : currentPos - steps; - return prevPos>=0 ? prevPos : -1; - } - case QMediaPlaylist::Loop: - { - int prevPos = currentPos - steps; - while (prevPos<0) - prevPos += playlist->mediaCount(); - return prevPos; - } - case QMediaPlaylist::Random: - { - //TODO: limit the history size - - if (randomPositionsOffset == -1) { - randomModePositions.clear(); - randomModePositions.append(currentPos); - randomPositionsOffset = 0; - } - - while (randomPositionsOffset-steps < 0) { - randomModePositions.prepend(-1); - randomPositionsOffset++; - } - - int res = randomModePositions[randomPositionsOffset-steps]; - if (res<0 || res >= playlist->mediaCount()) { - res = qrand() % playlist->mediaCount(); - randomModePositions[randomPositionsOffset-steps] = res; - } - - return res; - } - } - - return -1; -} - -/*! - \class QMediaPlaylistNavigator - - \brief The QMediaPlaylistNavigator class provides navigation for a media playlist. - \inmodule QtMultimedia - \ingroup multimedia - \since 1.0 - - \sa QMediaPlaylist, QMediaPlaylistProvider -*/ - - -/*! - Constructs a media playlist navigator for a \a playlist. - - The \a parent is passed to QObject. - \since 1.0 - */ -QMediaPlaylistNavigator::QMediaPlaylistNavigator(QMediaPlaylistProvider *playlist, QObject *parent) - : QObject(parent) - , d_ptr(new QMediaPlaylistNavigatorPrivate) -{ - d_ptr->q_ptr = this; - - setPlaylist(playlist ? playlist : _q_nullMediaPlaylist()); -} - -/*! - Destroys a media playlist navigator. - */ - -QMediaPlaylistNavigator::~QMediaPlaylistNavigator() -{ - delete d_ptr; -} - - -/*! \property QMediaPlaylistNavigator::playbackMode - Contains the playback mode. - \since 1.0 - */ -QMediaPlaylist::PlaybackMode QMediaPlaylistNavigator::playbackMode() const -{ - return d_func()->playbackMode; -} - -/*! - Sets the playback \a mode. - \since 1.0 - */ -void QMediaPlaylistNavigator::setPlaybackMode(QMediaPlaylist::PlaybackMode mode) -{ - Q_D(QMediaPlaylistNavigator); - if (d->playbackMode == mode) - return; - - if (mode == QMediaPlaylist::Random) { - d->randomPositionsOffset = 0; - d->randomModePositions.append(d->currentPos); - } else if (d->playbackMode == QMediaPlaylist::Random) { - d->randomPositionsOffset = -1; - d->randomModePositions.clear(); - } - - d->playbackMode = mode; - - emit playbackModeChanged(mode); - emit surroundingItemsChanged(); -} - -/*! - Returns the playlist being navigated. - \since 1.0 -*/ - -QMediaPlaylistProvider *QMediaPlaylistNavigator::playlist() const -{ - return d_func()->playlist; -} - -/*! - Sets the \a playlist to navigate. - \since 1.0 -*/ -void QMediaPlaylistNavigator::setPlaylist(QMediaPlaylistProvider *playlist) -{ - Q_D(QMediaPlaylistNavigator); - - if (d->playlist == playlist) - return; - - if (d->playlist) { - d->playlist->disconnect(this); - } - - if (playlist) { - d->playlist = playlist; - } else { - //assign to shared readonly null playlist - d->playlist = _q_nullMediaPlaylist(); - } - - connect(d->playlist, SIGNAL(mediaInserted(int,int)), SLOT(_q_mediaInserted(int,int))); - connect(d->playlist, SIGNAL(mediaRemoved(int,int)), SLOT(_q_mediaRemoved(int,int))); - connect(d->playlist, SIGNAL(mediaChanged(int,int)), SLOT(_q_mediaChanged(int,int))); - - d->randomPositionsOffset = -1; - d->randomModePositions.clear(); - - if (d->currentPos != -1) { - d->currentPos = -1; - emit currentIndexChanged(-1); - } - - if (!d->currentItem.isNull()) { - d->currentItem = QMediaContent(); - emit activated(d->currentItem); //stop playback - } -} - -/*! \property QMediaPlaylistNavigator::currentItem - - Contains the media at the current position in the playlist. - - \since 1.0 - \sa currentIndex() -*/ - -QMediaContent QMediaPlaylistNavigator::currentItem() const -{ - return itemAt(d_func()->currentPos); -} - -/*! \fn QMediaContent QMediaPlaylistNavigator::nextItem(int steps) const - - Returns the media that is \a steps positions ahead of the current - position in the playlist. - - \since 1.0 - \sa nextIndex() -*/ -QMediaContent QMediaPlaylistNavigator::nextItem(int steps) const -{ - return itemAt(nextIndex(steps)); -} - -/*! - Returns the media that is \a steps positions behind the current - position in the playlist. - - \since 1.0 - \sa previousIndex() - */ -QMediaContent QMediaPlaylistNavigator::previousItem(int steps) const -{ - return itemAt(previousIndex(steps)); -} - -/*! - Returns the media at a \a position in the playlist. - \since 1.0 - */ -QMediaContent QMediaPlaylistNavigator::itemAt(int position) const -{ - return d_func()->playlist->media(position); -} - -/*! \property QMediaPlaylistNavigator::currentIndex - - Contains the position of the current media. - - If no media is current, the property contains -1. - - \since 1.0 - \sa nextIndex(), previousIndex() -*/ - -int QMediaPlaylistNavigator::currentIndex() const -{ - return d_func()->currentPos; -} - -/*! - Returns a position \a steps ahead of the current position - accounting for the playbackMode(). - - If the position is beyond the end of the playlist, this value - returned is -1. - - \since 1.0 - \sa currentIndex(), previousIndex(), playbackMode() -*/ - -int QMediaPlaylistNavigator::nextIndex(int steps) const -{ - return d_func()->nextItemPos(steps); -} - -/*! - - Returns a position \a steps behind the current position accounting - for the playbackMode(). - - If the position is prior to the beginning of the playlist this will - return -1. - - \since 1.0 - \sa currentIndex(), nextIndex(), playbackMode() -*/ -int QMediaPlaylistNavigator::previousIndex(int steps) const -{ - return d_func()->previousItemPos(steps); -} - -/*! - Advances to the next item in the playlist. - - \since 1.0 - \sa previous(), jump(), playbackMode() - */ -void QMediaPlaylistNavigator::next() -{ - Q_D(QMediaPlaylistNavigator); - - int nextPos = d->nextItemPos(); - - if ( playbackMode() == QMediaPlaylist::Random ) - d->randomPositionsOffset++; - - jump(nextPos); -} - -/*! - Returns to the previous item in the playlist, - - \since 1.0 - \sa next(), jump(), playbackMode() - */ -void QMediaPlaylistNavigator::previous() -{ - Q_D(QMediaPlaylistNavigator); - - int prevPos = d->previousItemPos(); - if ( playbackMode() == QMediaPlaylist::Random ) - d->randomPositionsOffset--; - - jump(prevPos); -} - -/*! - Jumps to a new \a position in the playlist. - \since 1.0 - */ -void QMediaPlaylistNavigator::jump(int position) -{ - Q_D(QMediaPlaylistNavigator); - - if (position<-1 || position>=d->playlist->mediaCount()) { - qWarning() << "QMediaPlaylistNavigator: Jump outside playlist range"; - position = -1; - } - - if (position != -1) - d->lastValidPos = position; - - if (playbackMode() == QMediaPlaylist::Random) { - if (d->randomModePositions[d->randomPositionsOffset] != position) { - d->randomModePositions.clear(); - d->randomModePositions.append(position); - d->randomPositionsOffset = 0; - } - } - - if (position != -1) - d->currentItem = d->playlist->media(position); - else - d->currentItem = QMediaContent(); - - if (position != d->currentPos) { - d->currentPos = position; - emit currentIndexChanged(d->currentPos); - emit surroundingItemsChanged(); - } - - emit activated(d->currentItem); -} - -/*! - \internal - \since 1.0 -*/ -void QMediaPlaylistNavigatorPrivate::_q_mediaInserted(int start, int end) -{ - Q_Q(QMediaPlaylistNavigator); - - if (currentPos >= start) { - currentPos = end-start+1; - q->jump(currentPos); - } - - //TODO: check if they really changed - emit q->surroundingItemsChanged(); -} - -/*! - \internal - \since 1.0 -*/ -void QMediaPlaylistNavigatorPrivate::_q_mediaRemoved(int start, int end) -{ - Q_Q(QMediaPlaylistNavigator); - - if (currentPos > end) { - currentPos = currentPos - end-start+1; - q->jump(currentPos); - } else if (currentPos >= start) { - //current item was removed - currentPos = qMin(start, playlist->mediaCount()-1); - q->jump(currentPos); - } - - //TODO: check if they really changed - emit q->surroundingItemsChanged(); -} - -/*! - \internal - \since 1.0 -*/ -void QMediaPlaylistNavigatorPrivate::_q_mediaChanged(int start, int end) -{ - Q_Q(QMediaPlaylistNavigator); - - if (currentPos >= start && currentPos<=end) { - QMediaContent src = playlist->media(currentPos); - if (src != currentItem) { - currentItem = src; - emit q->activated(src); - } - } - - //TODO: check if they really changed - emit q->surroundingItemsChanged(); -} - -/*! - \fn QMediaPlaylistNavigator::activated(const QMediaContent &media) - - Signals that the current \a media has changed. - \since 1.0 -*/ - -/*! - \fn QMediaPlaylistNavigator::currentIndexChanged(int position) - - Signals the \a position of the current media has changed. - \since 1.0 -*/ - -/*! - \fn QMediaPlaylistNavigator::playbackModeChanged(QMediaPlaylist::PlaybackMode mode) - - Signals that the playback \a mode has changed. - \since 1.0 -*/ - -/*! - \fn QMediaPlaylistNavigator::surroundingItemsChanged() - - Signals that media immediately surrounding the current position has changed. - \since 1.0 -*/ - -#include "moc_qmediaplaylistnavigator.cpp" -QT_END_NAMESPACE - |