bbfccc7135
Qt copyrights are now in The Qt Company, so we could update the source code headers accordingly. In the same go we should also fix the links to point to qt.io. Change-Id: I1c6faa4f59f8eca54f01ef20941fa60161dd7872 Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
99 lines
4.0 KiB
Plaintext
99 lines
4.0 KiB
Plaintext
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:FDL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Free Documentation License Usage
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** Alternatively, this file may be used under the terms of the GNU Free
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** Documentation License version 1.3 as published by the Free Software
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** Foundation and appearing in the file included in the packaging of
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** this file. Please review the following information to ensure
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** the GNU Free Documentation License version 1.3 requirements
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** will be met: http://www.gnu.org/copyleft/fdl.html.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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/*!
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\example player
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\title Media Player Example
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\ingroup multimedia_examples
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\brief Playing audio and video.
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\image mediaplayerex.jpg
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\e{Media Player} demonstrates a simple multimedia player that can play
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audio and or video files using various codecs.
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\include examples-run.qdocinc
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The example uses a QMediaPlayer object passed into a QVideoWidget to
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control the video output. To give the application playlist capability
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we also use a QPlayList object.
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To activate the various functions such as play and stop on the dialog,
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the button clicked events emit the play() and stop() signals, which
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are connected to the play() and stop() slots of QMediaPlayer.
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\code
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connect(controls, SIGNAL(play()), player, SLOT(play()));
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connect(controls, SIGNAL(pause()), player, SLOT(pause()));
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connect(controls, SIGNAL(stop()), player, SLOT(stop()));
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\endcode
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We can get the volume (and set our user interface representation)
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\code
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controls->setVolume(player->volume());
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\endcode
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and we can make widget 'volume' changes change the volume
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\code
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connect(controls, SIGNAL(changeVolume(int)), player, SLOT(setVolume(int)));
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\endcode
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The example also allows us to change various video properties by means
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of the QVideoWidget object. We can go to Full Screen mode with a single
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button click, and back again. Or if we press the "Color Options" dialog
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button we can have access to more subtle influences. The dialog has a
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set of sliders so that we can change the brightness, contrast, hue and
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saturation of the video being watched. The connect() statements are in
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pairs so that changes to either the user interface widget (the relevant
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slider) or the QVideoWidget object will update the other object.
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\code
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connect(brightnessSlider, SIGNAL(sliderMoved(int)), videoWidget,
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SLOT(setBrightness(int)));
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connect(videoWidget, SIGNAL(brightnessChanged(int)),
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brightnessSlider, SLOT(setValue(int)));
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connect(contrastSlider, SIGNAL(sliderMoved(int)), videoWidget,
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SLOT(setContrast(int)));
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connect(videoWidget, SIGNAL(contrastChanged(int)), contrastSlider,
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SLOT(setValue(int)));
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connect(hueSlider, SIGNAL(sliderMoved(int)), videoWidget,
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SLOT(setHue(int)));
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connect(videoWidget, SIGNAL(hueChanged(int)), hueSlider,
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SLOT(setValue(int)));
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connect(saturationSlider, SIGNAL(sliderMoved(int)), videoWidget,
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SLOT(setSaturation(int)));
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connect(videoWidget, SIGNAL(saturationChanged(int)),
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saturationSlider, SLOT(setValue(int)));
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\endcode
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*/
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