Phonon

Phonon Tutorial Part 1: a simple audio player

Overview | Application Example | Backend Development
00001 /*  This file is part of the KDE project
00002     Copyright (C) 2007 Matthias Kretz <kretz@kde.org>
00003 
00004     Permission to use, copy, modify, and distribute this software
00005     and its documentation for any purpose and without fee is hereby
00006     granted, provided that the above copyright notice appear in all
00007     copies and that both that the copyright notice and this
00008     permission notice and warranty disclaimer appear in supporting
00009     documentation, and that the name of the author not be used in
00010     advertising or publicity pertaining to distribution of the
00011     software without specific, written prior permission.
00012 
00013     The author disclaim all warranties with regard to this
00014     software, including all implied warranties of merchantability
00015     and fitness.  In no event shall the author be liable for any
00016     special, indirect or consequential damages or any damages
00017     whatsoever resulting from loss of use, data or profits, whether
00018     in an action of contract, negligence or other tortious action,
00019     arising out of or in connection with the use or performance of
00020     this software.
00021 
00022 */
00023 
00024 #include <Phonon/MediaObject>
00025 #include <Phonon/Path>
00026 #include <Phonon/AudioOutput>
00027 #include <Phonon/Global>
00028 
00029 #include <QtGui/QApplication>
00030 #include <QtGui/QMainWindow>
00031 #include <QtGui/QDirModel>
00032 #include <QtGui/QColumnView>
00033 
00034 class MainWindow : public QMainWindow
00035 {
00036     Q_OBJECT
00037     public:
00038         MainWindow();
00039 
00040     private slots:
00041         void play(const QModelIndex &index);
00042 
00043     private:
00044         void delayedInit();
00045 
00046         QColumnView m_fileView;
00047         QDirModel m_model;
00048 
00049         Phonon::MediaObject *m_media;
00050 };
00051 
00052 MainWindow::MainWindow()
00053     : m_fileView(this),
00054     m_media(0)
00055 {
00056     setCentralWidget(&m_fileView);
00057     m_fileView.setModel(&m_model);
00058     m_fileView.setFrameStyle(QFrame::NoFrame);
00059 
00060     connect(&m_fileView, SIGNAL(updatePreviewWidget(const QModelIndex &)), SLOT(play(const QModelIndex &)));
00061 }
00062 
00063 void MainWindow::play(const QModelIndex &index)
00064 {
00065     delayedInit();
00066     m_media->setCurrentSource(m_model.filePath(index));
00067     m_media->play();
00068 }
00069 
00070 void MainWindow::delayedInit()
00071 {
00072     if (!m_media) {
00073         m_media = new Phonon::MediaObject(this);
00074         Phonon::AudioOutput *audioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this);
00075         createPath(m_media, audioOutput);
00076     }
00077 }
00078 
00079 int main(int argc, char **argv)
00080 {
00081     QApplication app(argc, argv);
00082     QApplication::setApplicationName("Phonon Tutorial 2");
00083     MainWindow mw;
00084     mw.show();
00085     return app.exec();
00086 }
00087 
00088 #include "tutorial2.moc"
Phonon

Phonon Tutorial Part 1: a simple audio player

Phonon

kdelibs
