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<h1 class="title">player.cpp Example File</h1>
<span class="subtitle">multimediawidgets/player/player.cpp</span>
<!-- $$$multimediawidgets/player/player.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "player.h"</span>
<span class="preprocessor">#include "playercontrols.h"</span>
<span class="preprocessor">#include "playlistmodel.h"</span>
<span class="preprocessor">#include "histogramwidget.h"</span>
<span class="preprocessor">#include "videowidget.h"</span>
<span class="preprocessor">#include <QMediaService></span>
<span class="preprocessor">#include <QMediaPlaylist></span>
<span class="preprocessor">#include <QVideoProbe></span>
<span class="preprocessor">#include <QAudioProbe></span>
<span class="preprocessor">#include <QMediaMetaData></span>
<span class="preprocessor">#include <QtWidgets></span>
Player<span class="operator">::</span>Player(<span class="type">QWidget</span> <span class="operator">*</span>parent)
: <span class="type">QWidget</span>(parent)
{
m_player <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span>(<span class="keyword">this</span>);
m_player<span class="operator">-</span><span class="operator">></span>setAudioRole(<span class="type"><a href="qaudio.html">QAudio</a></span><span class="operator">::</span>VideoRole);
qInfo() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Supported audio roles:"</span>;
<span class="keyword">for</span> (<span class="type"><a href="qaudio.html">QAudio</a></span><span class="operator">::</span>Role role : m_player<span class="operator">-</span><span class="operator">></span>supportedAudioRoles())
qInfo() <span class="operator"><</span><span class="operator"><</span> <span class="string">" "</span> <span class="operator"><</span><span class="operator"><</span> role;
<span class="comment">// owned by PlaylistModel</span>
m_playlist <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qmediaplaylist.html">QMediaPlaylist</a></span>();
m_player<span class="operator">-</span><span class="operator">></span>setPlaylist(m_playlist);
connect(m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>durationChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>durationChanged);
connect(m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>positionChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>positionChanged);
connect(m_player<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>metaDataChanged)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>metaDataChanged);
connect(m_playlist<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplaylist.html">QMediaPlaylist</a></span><span class="operator">::</span>currentIndexChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>playlistPositionChanged);
connect(m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>mediaStatusChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>statusChanged);
connect(m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>bufferStatusChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>bufferingProgress);
connect(m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>videoAvailableChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>videoAvailableChanged);
connect(m_player<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>Error<span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>error)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>displayErrorMessage);
connect(m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>stateChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>stateChanged);
m_videoWidget <span class="operator">=</span> <span class="keyword">new</span> VideoWidget(<span class="keyword">this</span>);
m_player<span class="operator">-</span><span class="operator">></span>setVideoOutput(m_videoWidget);
m_playlistModel <span class="operator">=</span> <span class="keyword">new</span> PlaylistModel(<span class="keyword">this</span>);
m_playlistModel<span class="operator">-</span><span class="operator">></span>setPlaylist(m_playlist);
m_playlistView <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QListView</span>(<span class="keyword">this</span>);
m_playlistView<span class="operator">-</span><span class="operator">></span>setModel(m_playlistModel);
m_playlistView<span class="operator">-</span><span class="operator">></span>setCurrentIndex(m_playlistModel<span class="operator">-</span><span class="operator">></span>index(m_playlist<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">,</span> <span class="number">0</span>));
connect(m_playlistView<span class="operator">,</span> <span class="operator">&</span><span class="type">QAbstractItemView</span><span class="operator">::</span>activated<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>jump);
m_slider <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QSlider</span>(<span class="type">Qt</span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="keyword">this</span>);
m_slider<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> m_player<span class="operator">-</span><span class="operator">></span>duration() <span class="operator">/</span> <span class="number">1000</span>);
m_labelDuration <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(<span class="keyword">this</span>);
connect(m_slider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>sliderMoved<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>seek);
m_labelHistogram <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(<span class="keyword">this</span>);
m_labelHistogram<span class="operator">-</span><span class="operator">></span>setText(<span class="string">"Histogram:"</span>);
m_videoHistogram <span class="operator">=</span> <span class="keyword">new</span> HistogramWidget(<span class="keyword">this</span>);
m_audioHistogram <span class="operator">=</span> <span class="keyword">new</span> HistogramWidget(<span class="keyword">this</span>);
<span class="type">QHBoxLayout</span> <span class="operator">*</span>histogramLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QHBoxLayout</span>;
histogramLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_labelHistogram);
histogramLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_videoHistogram<span class="operator">,</span> <span class="number">1</span>);
histogramLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_audioHistogram<span class="operator">,</span> <span class="number">2</span>);
m_videoProbe <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvideoprobe.html">QVideoProbe</a></span>(<span class="keyword">this</span>);
connect(m_videoProbe<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideoprobe.html">QVideoProbe</a></span><span class="operator">::</span>videoFrameProbed<span class="operator">,</span> m_videoHistogram<span class="operator">,</span> <span class="operator">&</span>HistogramWidget<span class="operator">::</span>processFrame);
m_videoProbe<span class="operator">-</span><span class="operator">></span>setSource(m_player);
m_audioProbe <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaudioprobe.html">QAudioProbe</a></span>(<span class="keyword">this</span>);
connect(m_audioProbe<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qaudioprobe.html">QAudioProbe</a></span><span class="operator">::</span>audioBufferProbed<span class="operator">,</span> m_audioHistogram<span class="operator">,</span> <span class="operator">&</span>HistogramWidget<span class="operator">::</span>processBuffer);
m_audioProbe<span class="operator">-</span><span class="operator">></span>setSource(m_player);
<span class="type">QPushButton</span> <span class="operator">*</span>openButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(tr(<span class="string">"Open"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
connect(openButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>open);
PlayerControls <span class="operator">*</span>controls <span class="operator">=</span> <span class="keyword">new</span> PlayerControls(<span class="keyword">this</span>);
controls<span class="operator">-</span><span class="operator">></span>setState(m_player<span class="operator">-</span><span class="operator">></span>state());
controls<span class="operator">-</span><span class="operator">></span>setVolume(m_player<span class="operator">-</span><span class="operator">></span>volume());
controls<span class="operator">-</span><span class="operator">></span>setMuted(controls<span class="operator">-</span><span class="operator">></span>isMuted());
connect(controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>play<span class="operator">,</span> m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>play);
connect(controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>pause<span class="operator">,</span> m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>pause);
connect(controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>stop<span class="operator">,</span> m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>stop);
connect(controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>next<span class="operator">,</span> m_playlist<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplaylist.html">QMediaPlaylist</a></span><span class="operator">::</span>next);
connect(controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>previous<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>previousClicked);
connect(controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>changeVolume<span class="operator">,</span> m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>setVolume);
connect(controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>changeMuting<span class="operator">,</span> m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>setMuted);
connect(controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>changeRate<span class="operator">,</span> m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>setPlaybackRate);
connect(controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>stop<span class="operator">,</span> m_videoWidget<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>update));
connect(m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>stateChanged<span class="operator">,</span> controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>setState);
connect(m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>volumeChanged<span class="operator">,</span> controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>setVolume);
connect(m_player<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>mutedChanged<span class="operator">,</span> controls<span class="operator">,</span> <span class="operator">&</span>PlayerControls<span class="operator">::</span>setMuted);
m_fullScreenButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(tr(<span class="string">"FullScreen"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
m_fullScreenButton<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>);
m_colorButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(tr(<span class="string">"Color Options..."</span>)<span class="operator">,</span> <span class="keyword">this</span>);
m_colorButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
connect(m_colorButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Player<span class="operator">::</span>showColorDialog);
<span class="type">QBoxLayout</span> <span class="operator">*</span>displayLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QHBoxLayout</span>;
displayLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_videoWidget<span class="operator">,</span> <span class="number">2</span>);
displayLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_playlistView);
<span class="type">QBoxLayout</span> <span class="operator">*</span>controlLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QHBoxLayout</span>;
controlLayout<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">0</span>);
controlLayout<span class="operator">-</span><span class="operator">></span>addWidget(openButton);
controlLayout<span class="operator">-</span><span class="operator">></span>addStretch(<span class="number">1</span>);
controlLayout<span class="operator">-</span><span class="operator">></span>addWidget(controls);
controlLayout<span class="operator">-</span><span class="operator">></span>addStretch(<span class="number">1</span>);
controlLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_fullScreenButton);
controlLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_colorButton);
<span class="type">QBoxLayout</span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVBoxLayout</span>;
layout<span class="operator">-</span><span class="operator">></span>addLayout(displayLayout);
<span class="type">QHBoxLayout</span> <span class="operator">*</span>hLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QHBoxLayout</span>;
hLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_slider);
hLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_labelDuration);
layout<span class="operator">-</span><span class="operator">></span>addLayout(hLayout);
layout<span class="operator">-</span><span class="operator">></span>addLayout(controlLayout);
layout<span class="operator">-</span><span class="operator">></span>addLayout(histogramLayout);
<span class="preprocessor">#if defined(Q_OS_QNX)</span>
<span class="comment">// On QNX, the main window doesn't have a title bar (or any other decorations).</span>
<span class="comment">// Create a status bar for the status information instead.</span>
m_statusLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>;
m_statusBar <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QStatusBar</span>;
m_statusBar<span class="operator">-</span><span class="operator">></span>addPermanentWidget(m_statusLabel);
m_statusBar<span class="operator">-</span><span class="operator">></span>setSizeGripEnabled(<span class="keyword">false</span>); <span class="comment">// Without mouse grabbing, it doesn't work very well.</span>
layout<span class="operator">-</span><span class="operator">></span>addWidget(m_statusBar);
<span class="preprocessor">#endif</span>
setLayout(layout);
<span class="keyword">if</span> (<span class="operator">!</span>isPlayerAvailable()) {
<span class="type">QMessageBox</span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Service not available"</span>)<span class="operator">,</span>
tr(<span class="string">"The QMediaPlayer object does not have a valid service.\n"</span>\
<span class="string">"Please check the media service plugins are installed."</span>));
controls<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
m_playlistView<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
openButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
m_colorButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
m_fullScreenButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
}
metaDataChanged();
}
Player<span class="operator">::</span><span class="operator">~</span>Player()
{
}
bool Player<span class="operator">::</span>isPlayerAvailable() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_player<span class="operator">-</span><span class="operator">></span>isAvailable();
}
<span class="type">void</span> Player<span class="operator">::</span>open()
{
<span class="type">QFileDialog</span> fileDialog(<span class="keyword">this</span>);
fileDialog<span class="operator">.</span>setAcceptMode(<span class="type">QFileDialog</span><span class="operator">::</span>AcceptOpen);
fileDialog<span class="operator">.</span>setWindowTitle(tr(<span class="string">"Open Files"</span>));
<span class="type">QStringList</span> supportedMimeTypes <span class="operator">=</span> m_player<span class="operator">-</span><span class="operator">></span>supportedMimeTypes();
<span class="keyword">if</span> (<span class="operator">!</span>supportedMimeTypes<span class="operator">.</span>isEmpty()) {
supportedMimeTypes<span class="operator">.</span>append(<span class="string">"audio/x-m3u"</span>); <span class="comment">// MP3 playlists</span>
fileDialog<span class="operator">.</span>setMimeTypeFilters(supportedMimeTypes);
}
fileDialog<span class="operator">.</span>setDirectory(<span class="type">QStandardPaths</span><span class="operator">::</span>standardLocations(<span class="type">QStandardPaths</span><span class="operator">::</span>MoviesLocation)<span class="operator">.</span>value(<span class="number">0</span><span class="operator">,</span> <span class="type">QDir</span><span class="operator">::</span>homePath()));
<span class="keyword">if</span> (fileDialog<span class="operator">.</span>exec() <span class="operator">=</span><span class="operator">=</span> <span class="type">QDialog</span><span class="operator">::</span>Accepted)
addToPlaylist(fileDialog<span class="operator">.</span>selectedUrls());
}
<span class="keyword">static</span> bool isPlaylist(<span class="keyword">const</span> <span class="type">QUrl</span> <span class="operator">&</span>url) <span class="comment">// Check for ".m3u" playlists.</span>
{
<span class="keyword">if</span> (<span class="operator">!</span>url<span class="operator">.</span>isLocalFile())
<span class="keyword">return</span> <span class="keyword">false</span>;
<span class="keyword">const</span> <span class="type">QFileInfo</span> fileInfo(url<span class="operator">.</span>toLocalFile());
<span class="keyword">return</span> fileInfo<span class="operator">.</span>exists() <span class="operator">&</span><span class="operator">&</span> <span class="operator">!</span>fileInfo<span class="operator">.</span>suffix()<span class="operator">.</span>compare(QLatin1String(<span class="string">"m3u"</span>)<span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>CaseInsensitive);
}
<span class="type">void</span> Player<span class="operator">::</span>addToPlaylist(<span class="keyword">const</span> <span class="type">QList</span><span class="operator"><</span><span class="type">QUrl</span><span class="operator">></span> <span class="operator">&</span>urls)
{
<span class="keyword">for</span> (<span class="keyword">auto</span> <span class="operator">&</span>url: urls) {
<span class="keyword">if</span> (isPlaylist(url))
m_playlist<span class="operator">-</span><span class="operator">></span>load(url);
<span class="keyword">else</span>
m_playlist<span class="operator">-</span><span class="operator">></span>addMedia(url);
}
}
<span class="type">void</span> Player<span class="operator">::</span>setCustomAudioRole(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>role)
{
m_player<span class="operator">-</span><span class="operator">></span>setCustomAudioRole(role);
}
<span class="type">void</span> Player<span class="operator">::</span>durationChanged(<span class="type">qint64</span> duration)
{
m_duration <span class="operator">=</span> duration <span class="operator">/</span> <span class="number">1000</span>;
m_slider<span class="operator">-</span><span class="operator">></span>setMaximum(m_duration);
}
<span class="type">void</span> Player<span class="operator">::</span>positionChanged(<span class="type">qint64</span> progress)
{
<span class="keyword">if</span> (<span class="operator">!</span>m_slider<span class="operator">-</span><span class="operator">></span>isSliderDown())
m_slider<span class="operator">-</span><span class="operator">></span>setValue(progress <span class="operator">/</span> <span class="number">1000</span>);
updateDurationInfo(progress <span class="operator">/</span> <span class="number">1000</span>);
}
<span class="type">void</span> Player<span class="operator">::</span>metaDataChanged()
{
<span class="keyword">if</span> (m_player<span class="operator">-</span><span class="operator">></span>isMetaDataAvailable()) {
setTrackInfo(<span class="type">QString</span>(<span class="string">"%1 - %2"</span>)
<span class="operator">.</span>arg(m_player<span class="operator">-</span><span class="operator">></span>metaData(<span class="type"><a href="qmediametadata.html">QMediaMetaData</a></span><span class="operator">::</span>AlbumArtist)<span class="operator">.</span>toString())
<span class="operator">.</span>arg(m_player<span class="operator">-</span><span class="operator">></span>metaData(<span class="type"><a href="qmediametadata.html">QMediaMetaData</a></span><span class="operator">::</span>Title)<span class="operator">.</span>toString()));
<span class="keyword">if</span> (m_coverLabel) {
<span class="type">QUrl</span> url <span class="operator">=</span> m_player<span class="operator">-</span><span class="operator">></span>metaData(<span class="type"><a href="qmediametadata.html">QMediaMetaData</a></span><span class="operator">::</span>CoverArtUrlLarge)<span class="operator">.</span>value<span class="operator"><</span><span class="type">QUrl</span><span class="operator">></span>();
m_coverLabel<span class="operator">-</span><span class="operator">></span>setPixmap(<span class="operator">!</span>url<span class="operator">.</span>isEmpty()
<span class="operator">?</span> <span class="type">QPixmap</span>(url<span class="operator">.</span>toString())
: <span class="type">QPixmap</span>());
}
}
}
<span class="type">void</span> Player<span class="operator">::</span>previousClicked()
{
<span class="comment">// Go to previous track if we are within the first 5 seconds of playback</span>
<span class="comment">// Otherwise, seek to the beginning.</span>
<span class="keyword">if</span> (m_player<span class="operator">-</span><span class="operator">></span>position() <span class="operator"><</span><span class="operator">=</span> <span class="number">5000</span>)
m_playlist<span class="operator">-</span><span class="operator">></span>previous();
<span class="keyword">else</span>
m_player<span class="operator">-</span><span class="operator">></span>setPosition(<span class="number">0</span>);
}
<span class="type">void</span> Player<span class="operator">::</span>jump(<span class="keyword">const</span> <span class="type">QModelIndex</span> <span class="operator">&</span>index)
{
<span class="keyword">if</span> (index<span class="operator">.</span>isValid()) {
m_playlist<span class="operator">-</span><span class="operator">></span>setCurrentIndex(index<span class="operator">.</span>row());
m_player<span class="operator">-</span><span class="operator">></span>play();
}
}
<span class="type">void</span> Player<span class="operator">::</span>playlistPositionChanged(<span class="type">int</span> currentItem)
{
clearHistogram();
m_playlistView<span class="operator">-</span><span class="operator">></span>setCurrentIndex(m_playlistModel<span class="operator">-</span><span class="operator">></span>index(currentItem<span class="operator">,</span> <span class="number">0</span>));
}
<span class="type">void</span> Player<span class="operator">::</span>seek(<span class="type">int</span> seconds)
{
m_player<span class="operator">-</span><span class="operator">></span>setPosition(seconds <span class="operator">*</span> <span class="number">1000</span>);
}
<span class="type">void</span> Player<span class="operator">::</span>statusChanged(<span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>MediaStatus status)
{
handleCursor(status);
<span class="comment">// handle status message</span>
<span class="keyword">switch</span> (status) {
<span class="keyword">case</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>UnknownMediaStatus:
<span class="keyword">case</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>NoMedia:
<span class="keyword">case</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>LoadedMedia:
setStatusInfo(<span class="type">QString</span>());
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>LoadingMedia:
setStatusInfo(tr(<span class="string">"Loading..."</span>));
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>BufferingMedia:
<span class="keyword">case</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>BufferedMedia:
setStatusInfo(tr(<span class="string">"Buffering %1%"</span>)<span class="operator">.</span>arg(m_player<span class="operator">-</span><span class="operator">></span>bufferStatus()));
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>StalledMedia:
setStatusInfo(tr(<span class="string">"Stalled %1%"</span>)<span class="operator">.</span>arg(m_player<span class="operator">-</span><span class="operator">></span>bufferStatus()));
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>EndOfMedia:
<span class="type">QApplication</span><span class="operator">::</span>alert(<span class="keyword">this</span>);
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>InvalidMedia:
displayErrorMessage();
<span class="keyword">break</span>;
}
}
<span class="type">void</span> Player<span class="operator">::</span>stateChanged(<span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>State state)
{
<span class="keyword">if</span> (state <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>StoppedState)
clearHistogram();
}
<span class="type">void</span> Player<span class="operator">::</span>handleCursor(<span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>MediaStatus status)
{
<span class="preprocessor">#ifndef QT_NO_CURSOR</span>
<span class="keyword">if</span> (status <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>LoadingMedia <span class="operator">|</span><span class="operator">|</span>
status <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>BufferingMedia <span class="operator">|</span><span class="operator">|</span>
status <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>StalledMedia)
setCursor(<span class="type">QCursor</span>(<span class="type">Qt</span><span class="operator">::</span>BusyCursor));
<span class="keyword">else</span>
unsetCursor();
<span class="preprocessor">#endif</span>
}
<span class="type">void</span> Player<span class="operator">::</span>bufferingProgress(<span class="type">int</span> progress)
{
<span class="keyword">if</span> (m_player<span class="operator">-</span><span class="operator">></span>mediaStatus() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmediaplayer.html">QMediaPlayer</a></span><span class="operator">::</span>StalledMedia)
setStatusInfo(tr(<span class="string">"Stalled %1%"</span>)<span class="operator">.</span>arg(progress));
<span class="keyword">else</span>
setStatusInfo(tr(<span class="string">"Buffering %1%"</span>)<span class="operator">.</span>arg(progress));
}
<span class="type">void</span> Player<span class="operator">::</span>videoAvailableChanged(bool available)
{
<span class="keyword">if</span> (<span class="operator">!</span>available) {
disconnect(m_fullScreenButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>setFullScreen);
disconnect(m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>fullScreenChanged<span class="operator">,</span> m_fullScreenButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>setChecked);
m_videoWidget<span class="operator">-</span><span class="operator">></span>setFullScreen(<span class="keyword">false</span>);
} <span class="keyword">else</span> {
connect(m_fullScreenButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>setFullScreen);
connect(m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>fullScreenChanged<span class="operator">,</span> m_fullScreenButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>setChecked);
<span class="keyword">if</span> (m_fullScreenButton<span class="operator">-</span><span class="operator">></span>isChecked())
m_videoWidget<span class="operator">-</span><span class="operator">></span>setFullScreen(<span class="keyword">true</span>);
}
m_colorButton<span class="operator">-</span><span class="operator">></span>setEnabled(available);
}
<span class="type">void</span> Player<span class="operator">::</span>setTrackInfo(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>info)
{
m_trackInfo <span class="operator">=</span> info;
<span class="keyword">if</span> (m_statusBar) {
m_statusBar<span class="operator">-</span><span class="operator">></span>showMessage(m_trackInfo);
m_statusLabel<span class="operator">-</span><span class="operator">></span>setText(m_statusInfo);
} <span class="keyword">else</span> {
<span class="keyword">if</span> (<span class="operator">!</span>m_statusInfo<span class="operator">.</span>isEmpty())
setWindowTitle(<span class="type">QString</span>(<span class="string">"%1 | %2"</span>)<span class="operator">.</span>arg(m_trackInfo)<span class="operator">.</span>arg(m_statusInfo));
<span class="keyword">else</span>
setWindowTitle(m_trackInfo);
}
}
<span class="type">void</span> Player<span class="operator">::</span>setStatusInfo(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>info)
{
m_statusInfo <span class="operator">=</span> info;
<span class="keyword">if</span> (m_statusBar) {
m_statusBar<span class="operator">-</span><span class="operator">></span>showMessage(m_trackInfo);
m_statusLabel<span class="operator">-</span><span class="operator">></span>setText(m_statusInfo);
} <span class="keyword">else</span> {
<span class="keyword">if</span> (<span class="operator">!</span>m_statusInfo<span class="operator">.</span>isEmpty())
setWindowTitle(<span class="type">QString</span>(<span class="string">"%1 | %2"</span>)<span class="operator">.</span>arg(m_trackInfo)<span class="operator">.</span>arg(m_statusInfo));
<span class="keyword">else</span>
setWindowTitle(m_trackInfo);
}
}
<span class="type">void</span> Player<span class="operator">::</span>displayErrorMessage()
{
setStatusInfo(m_player<span class="operator">-</span><span class="operator">></span>errorString());
}
<span class="type">void</span> Player<span class="operator">::</span>updateDurationInfo(<span class="type">qint64</span> currentInfo)
{
<span class="type">QString</span> tStr;
<span class="keyword">if</span> (currentInfo <span class="operator">|</span><span class="operator">|</span> m_duration) {
<span class="type">QTime</span> currentTime((currentInfo <span class="operator">/</span> <span class="number">3600</span>) <span class="operator">%</span> <span class="number">60</span><span class="operator">,</span> (currentInfo <span class="operator">/</span> <span class="number">60</span>) <span class="operator">%</span> <span class="number">60</span><span class="operator">,</span>
currentInfo <span class="operator">%</span> <span class="number">60</span><span class="operator">,</span> (currentInfo <span class="operator">*</span> <span class="number">1000</span>) <span class="operator">%</span> <span class="number">1000</span>);
<span class="type">QTime</span> totalTime((m_duration <span class="operator">/</span> <span class="number">3600</span>) <span class="operator">%</span> <span class="number">60</span><span class="operator">,</span> (m_duration <span class="operator">/</span> <span class="number">60</span>) <span class="operator">%</span> <span class="number">60</span><span class="operator">,</span>
m_duration <span class="operator">%</span> <span class="number">60</span><span class="operator">,</span> (m_duration <span class="operator">*</span> <span class="number">1000</span>) <span class="operator">%</span> <span class="number">1000</span>);
<span class="type">QString</span> format <span class="operator">=</span> <span class="string">"mm:ss"</span>;
<span class="keyword">if</span> (m_duration <span class="operator">></span> <span class="number">3600</span>)
format <span class="operator">=</span> <span class="string">"hh:mm:ss"</span>;
tStr <span class="operator">=</span> currentTime<span class="operator">.</span>toString(format) <span class="operator">+</span> <span class="string">" / "</span> <span class="operator">+</span> totalTime<span class="operator">.</span>toString(format);
}
m_labelDuration<span class="operator">-</span><span class="operator">></span>setText(tStr);
}
<span class="type">void</span> Player<span class="operator">::</span>showColorDialog()
{
<span class="keyword">if</span> (<span class="operator">!</span>m_colorDialog) {
<span class="type">QSlider</span> <span class="operator">*</span>brightnessSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QSlider</span>(<span class="type">Qt</span><span class="operator">::</span>Horizontal);
brightnessSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="operator">-</span><span class="number">100</span><span class="operator">,</span> <span class="number">100</span>);
brightnessSlider<span class="operator">-</span><span class="operator">></span>setValue(m_videoWidget<span class="operator">-</span><span class="operator">></span>brightness());
connect(brightnessSlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>sliderMoved<span class="operator">,</span> m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>setBrightness);
connect(m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>brightnessChanged<span class="operator">,</span> brightnessSlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>setValue);
<span class="type">QSlider</span> <span class="operator">*</span>contrastSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QSlider</span>(<span class="type">Qt</span><span class="operator">::</span>Horizontal);
contrastSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="operator">-</span><span class="number">100</span><span class="operator">,</span> <span class="number">100</span>);
contrastSlider<span class="operator">-</span><span class="operator">></span>setValue(m_videoWidget<span class="operator">-</span><span class="operator">></span>contrast());
connect(contrastSlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>sliderMoved<span class="operator">,</span> m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>setContrast);
connect(m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>contrastChanged<span class="operator">,</span> contrastSlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>setValue);
<span class="type">QSlider</span> <span class="operator">*</span>hueSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QSlider</span>(<span class="type">Qt</span><span class="operator">::</span>Horizontal);
hueSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="operator">-</span><span class="number">100</span><span class="operator">,</span> <span class="number">100</span>);
hueSlider<span class="operator">-</span><span class="operator">></span>setValue(m_videoWidget<span class="operator">-</span><span class="operator">></span>hue());
connect(hueSlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>sliderMoved<span class="operator">,</span> m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>setHue);
connect(m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>hueChanged<span class="operator">,</span> hueSlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>setValue);
<span class="type">QSlider</span> <span class="operator">*</span>saturationSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QSlider</span>(<span class="type">Qt</span><span class="operator">::</span>Horizontal);
saturationSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="operator">-</span><span class="number">100</span><span class="operator">,</span> <span class="number">100</span>);
saturationSlider<span class="operator">-</span><span class="operator">></span>setValue(m_videoWidget<span class="operator">-</span><span class="operator">></span>saturation());
connect(saturationSlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>sliderMoved<span class="operator">,</span> m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>setSaturation);
connect(m_videoWidget<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qvideowidget.html">QVideoWidget</a></span><span class="operator">::</span>saturationChanged<span class="operator">,</span> saturationSlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>setValue);
<span class="type">QFormLayout</span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QFormLayout</span>;
layout<span class="operator">-</span><span class="operator">></span>addRow(tr(<span class="string">"Brightness"</span>)<span class="operator">,</span> brightnessSlider);
layout<span class="operator">-</span><span class="operator">></span>addRow(tr(<span class="string">"Contrast"</span>)<span class="operator">,</span> contrastSlider);
layout<span class="operator">-</span><span class="operator">></span>addRow(tr(<span class="string">"Hue"</span>)<span class="operator">,</span> hueSlider);
layout<span class="operator">-</span><span class="operator">></span>addRow(tr(<span class="string">"Saturation"</span>)<span class="operator">,</span> saturationSlider);
<span class="type">QPushButton</span> <span class="operator">*</span>button <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(tr(<span class="string">"Close"</span>));
layout<span class="operator">-</span><span class="operator">></span>addRow(button);
m_colorDialog <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDialog</span>(<span class="keyword">this</span>);
m_colorDialog<span class="operator">-</span><span class="operator">></span>setWindowTitle(tr(<span class="string">"Color Options"</span>));
m_colorDialog<span class="operator">-</span><span class="operator">></span>setLayout(layout);
connect(button<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> m_colorDialog<span class="operator">,</span> <span class="operator">&</span><span class="type">QDialog</span><span class="operator">::</span>close);
}
m_colorDialog<span class="operator">-</span><span class="operator">></span>show();
}
<span class="type">void</span> Player<span class="operator">::</span>clearHistogram()
{
<span class="type">QMetaObject</span><span class="operator">::</span>invokeMethod(m_videoHistogram<span class="operator">,</span> <span class="string">"processFrame"</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>QueuedConnection<span class="operator">,</span> Q_ARG(<span class="type"><a href="qvideoframe.html">QVideoFrame</a></span><span class="operator">,</span> <span class="type"><a href="qvideoframe.html">QVideoFrame</a></span>()));
<span class="type">QMetaObject</span><span class="operator">::</span>invokeMethod(m_audioHistogram<span class="operator">,</span> <span class="string">"processBuffer"</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>QueuedConnection<span class="operator">,</span> Q_ARG(<span class="type"><a href="qaudiobuffer.html">QAudioBuffer</a></span><span class="operator">,</span> <span class="type"><a href="qaudiobuffer.html">QAudioBuffer</a></span>()));
}
</pre>
</div>
<!-- @@@multimediawidgets/player/player.cpp -->
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<acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
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distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
1680fb88efc4e76ac8cb0ebf3578014f
>
files
>
545
