0dca769d5a
Update headers from before 2011 that were missed in the previous commit. Change-Id: Ib0fd91a39ffc57117fe01280e34519c3f914fac0 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
96 lines
3.5 KiB
Plaintext
96 lines
3.5 KiB
Plaintext
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
|
|
** All rights reserved.
|
|
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
**
|
|
** This file is part of the documentation of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:FDL$
|
|
** GNU Free Documentation License
|
|
** Alternatively, this file may be used under the terms of the GNU Free
|
|
** Documentation License version 1.3 as published by the Free Software
|
|
** Foundation and appearing in the file included in the packaging of
|
|
** this file.
|
|
**
|
|
** 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.
|
|
**
|
|
**
|
|
**
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
/*!
|
|
\example player
|
|
\title Media Player Example
|
|
|
|
|
|
This example creates a simple multimedia player. We can play audio and
|
|
or video files using various codecs.
|
|
|
|
The example uses a QMediaPlayer object passed into a QVideoWidget to
|
|
control the video output. To give the application playlist capability
|
|
we also use a QPlayList object.
|
|
|
|
To activate the various functions such as play and stop on the dialog
|
|
we connect clicked() signals to slots that emit the play() and stop()
|
|
signals and in turn which we connect to the play() and stop() slots in
|
|
QMediaPlayer.
|
|
|
|
\code
|
|
connect(controls, SIGNAL(play()), player, SLOT(play()));
|
|
connect(controls, SIGNAL(pause()), player, SLOT(pause()));
|
|
connect(controls, SIGNAL(stop()), player, SLOT(stop()));
|
|
\endcode
|
|
|
|
We can get the volume (and set our user interface representation)
|
|
|
|
\code
|
|
controls->setVolume(player->volume());
|
|
\endcode
|
|
|
|
and we can make widget 'volume' changes change the volume
|
|
|
|
\code
|
|
connect(controls, SIGNAL(changeVolume(int)), player, SLOT(setVolume(int)));
|
|
\endcode
|
|
|
|
The example also allows us to change various video properties by means
|
|
of the QVideoWidget object. We can go to Full Screen mode with a single
|
|
button click, and back again. Or if we press the "Color Options" dialog
|
|
button we can have access to more subtle influences. The dialog has a
|
|
set of sliders so that we can change the brightness, contrast, hue and
|
|
saturation of the video being watched. The connect() statements are in
|
|
pairs so that changes to either the user interface widget (the relevant
|
|
slider) or the QVideoWidget object will update the other object.
|
|
|
|
\code
|
|
connect(brightnessSlider, SIGNAL(sliderMoved(int)), videoWidget,
|
|
SLOT(setBrightness(int)));
|
|
connect(videoWidget, SIGNAL(brightnessChanged(int)),
|
|
brightnessSlider, SLOT(setValue(int)));
|
|
|
|
connect(contrastSlider, SIGNAL(sliderMoved(int)), videoWidget,
|
|
SLOT(setContrast(int)));
|
|
connect(videoWidget, SIGNAL(contrastChanged(int)), contrastSlider,
|
|
SLOT(setValue(int)));
|
|
|
|
connect(hueSlider, SIGNAL(sliderMoved(int)), videoWidget,
|
|
SLOT(setHue(int)));
|
|
connect(videoWidget, SIGNAL(hueChanged(int)), hueSlider,
|
|
SLOT(setValue(int)));
|
|
|
|
connect(saturationSlider, SIGNAL(sliderMoved(int)), videoWidget,
|
|
SLOT(setSaturation(int)));
|
|
connect(videoWidget, SIGNAL(saturationChanged(int)),
|
|
saturationSlider, SLOT(setValue(int)));
|
|
\endcode
|
|
|
|
*/
|
|
|