c532850fd1
Change-Id: Ib7fd75fb93c038f9e8fa9d71b6ad01fb27b97622 Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
159 lines
4.8 KiB
C++
159 lines
4.8 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/
|
|
**
|
|
** 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 "qmediagaplessplaybackcontrol.h"
|
|
#include "qmediacontrol_p.h"
|
|
|
|
/*!
|
|
\class QMediaGaplessPlaybackControl
|
|
\inmodule QtMultimedia
|
|
|
|
\ingroup multimedia
|
|
\ingroup multimedia_control
|
|
|
|
\brief The QMediaGaplessPlaybackControl class provides access to the gapless playback
|
|
related control of a QMediaService.
|
|
|
|
If a QMediaService supports gapless playback it will implement QMediaGaplessPlaybackControl.
|
|
This control provides a means to set the \l {setNextMedia()}{next media} or
|
|
\l {setCrossfadeTime()}{crossfade time} for smooth transitions between tracks.
|
|
|
|
The functionality provided by this control is exposed to application
|
|
code through the QMediaPlayer class.
|
|
|
|
The interface name of QMediaGaplessPlaybackControl is
|
|
\c org.qt-project.qt.mediagaplessplaybackcontrol/5.0 as defined in QMediaGaplessPlaybackControl_iid.
|
|
|
|
\sa QMediaService::requestControl(), QMediaPlayer
|
|
*/
|
|
|
|
/*!
|
|
\macro QMediaGaplessPlaybackControl_iid
|
|
|
|
\c org.qt-project.qt.mediagaplessplaybackcontrol/5.0
|
|
|
|
Defines the interface name of the QMediaGaplessPlaybackControl class.
|
|
|
|
\relates QMediaGaplessPlaybackControl
|
|
*/
|
|
|
|
/*!
|
|
Destroys a gapless playback control.
|
|
*/
|
|
QMediaGaplessPlaybackControl::~QMediaGaplessPlaybackControl()
|
|
{
|
|
}
|
|
|
|
/*!
|
|
Constructs a new gapless playback control with the given \a parent.
|
|
*/
|
|
QMediaGaplessPlaybackControl::QMediaGaplessPlaybackControl(QObject *parent):
|
|
QMediaControl(*new QMediaControlPrivate, parent)
|
|
{
|
|
}
|
|
|
|
/*!
|
|
\fn QMediaGaplessPlaybackControl::nextMedia() const
|
|
|
|
Returns the content of the next media
|
|
*/
|
|
|
|
/*!
|
|
\fn QMediaGaplessPlaybackControl::setNextMedia(const QMediaContent& media)
|
|
|
|
Sets the next \a media for smooth transition.
|
|
*/
|
|
|
|
/*!
|
|
\fn QMediaGaplessPlaybackControl::nextMediaChanged(const QMediaContent& media)
|
|
|
|
Signals that the next \a media has changed (either explicitly via \l setNextMedia() or when the
|
|
player clears the next media while advancing to it).
|
|
|
|
\sa nextMedia()
|
|
*/
|
|
|
|
/*!
|
|
\fn QMediaGaplessPlaybackControl::advancedToNextMedia()
|
|
|
|
Signals when the player advances to the next media (the content of next media will be cleared).
|
|
|
|
\sa nextMedia()
|
|
*/
|
|
|
|
/*!
|
|
\fn QMediaGaplessPlaybackControl::isCrossfadeSupported() const
|
|
|
|
Indicates whether crossfading is supported or not.
|
|
If crossfading is not supported, \l setCrossfadeTime() will be ignored and \l crossfadeTime() will
|
|
always return 0.
|
|
|
|
*/
|
|
|
|
/*!
|
|
\fn QMediaGaplessPlaybackControl::setCrossfadeTime(qreal crossfadeTime)
|
|
|
|
Sets the \a crossfadeTime in seconds for smooth transition.
|
|
|
|
Positive value means how much time it will take for the next media to transit from silent to
|
|
full volume and vice versa for current one. So both current and the next one will be playing
|
|
during this period of time.
|
|
|
|
A crossfade time of zero or negative will result in gapless playback (suitable for some
|
|
continuous media).
|
|
|
|
*/
|
|
|
|
/*!
|
|
\fn QMediaGaplessPlaybackControl::crossfadeTime() const
|
|
|
|
Returns current crossfade time in seconds.
|
|
*/
|
|
|
|
/*!
|
|
\fn QMediaGaplessPlaybackControl::crossfadeTimeChanged(qreal crossfadeTime)
|
|
|
|
Signals that the \a crossfadeTime has changed.
|
|
|
|
\sa crossfadeTime()
|
|
*/
|
|
|