int main(int argv, char **args)
{
QApplication app(argv, args);
app.setApplicationName("Audio effect tester");
Phonon::MediaObject *mediaObject = new Phonon::MediaObject;
mediaObject->setCurrentSource(QString("/home/gvatteka/Music/Lumme-Badloop.ogg"));
Phonon::AudioOutput *audioOutput =
new Phonon::AudioOutput(Phonon::MusicCategory);
//! [0]
QList<Phonon::EffectDescription> effectDescriptions =
Phonon::BackendCapabilities::availableAudioEffects();
Phonon::EffectDescription effectDescription = effectDescriptions.at(4);
Phonon::Path path = Phonon::createPath(mediaObject, audioOutput);
//! [1]
Phonon::Effect *effect = new Phonon::Effect(effectDescription);
path.insertEffect(effect);
//! [0]
Phonon::EffectWidget *effectWidget = new Phonon::EffectWidget(effect);
effectWidget->show();
//! [1]
mediaObject->play();
effectWidget->setWindowTitle("Effect Name: " + effectDescription.name());
app.exec();
}
Window::Window()
{
{
//![0]
Phonon::MediaObject *music =
Phonon::createPlayer(Phonon::MusicCategory,
Phonon::MediaSource("/path/mysong.wav"));
music->play();
//![0]
}
{
QWidget *parentWidget = new QWidget;
QUrl url("Myfancymusic");
//![1]
Phonon::VideoPlayer *player =
new Phonon::VideoPlayer(Phonon::VideoCategory, parentWidget);
player->play(url);
//![1]
}
{
//![2]
Phonon::MediaObject *mediaObject = new Phonon::MediaObject(this);
mediaObject->setCurrentSource(Phonon::MediaSource("/mymusic/barbiegirl.wav"));
Phonon::AudioOutput *audioOutput =
new Phonon::AudioOutput(Phonon::MusicCategory, this);
Phonon::Path path = Phonon::createPath(mediaObject, audioOutput);
//![2]
//![3]
Phonon::Effect *effect =
new Phonon::Effect(
Phonon::BackendCapabilities::availableAudioEffects()[0], this);
path.insertEffect(effect);
//![3]
}
{
//![4]
Phonon::MediaObject *mediaObject = new Phonon::MediaObject(this);
Phonon::VideoWidget *videoWidget = new Phonon::VideoWidget(this);
Phonon::createPath(mediaObject, videoWidget);
Phonon::AudioOutput *audioOutput =
new Phonon::AudioOutput(Phonon::VideoCategory, this);
Phonon::createPath(mediaObject, audioOutput);
//![4]
//![5]
mediaObject->play();
//![5]
}
}
MediaOutput::MediaOutput()
: totalTimeInMSec(0)
, prefinishMark( 0 )
, currentVolume( 1.0 )
, m_audioOutput( Phonon::MusicCategory, this )
, m_mediaFader()
{
m_mediaFader.setFadeCurve( Phonon::VolumeFaderEffect::Fade12Decibel );
Phonon::Path path = Phonon::createPath( this, &m_audioOutput );
fadingAvailable = path.insertEffect( &m_mediaFader );
tDebug() << "Connect media output " << &m_audioOutput;
connect( &m_audioOutput, SIGNAL( volumeChanged( qreal ) ), SLOT( onVolumeChanged( qreal ) ) );
connect( this, SIGNAL( tick( qint64 ) ), SLOT( checkPrefinishMark( qint64 ) ) );
blockSignals( true );
}
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
Phonon::MediaObject *mediaObject = new Phonon::MediaObject(this);
mediaObject->setCurrentSource(Phonon::MediaSource("../myPhonon1/mysong.mp3"));
Phonon::AudioOutput *audioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this);
Phonon::Path path = Phonon::createPath(mediaObject, audioOutput);
mediaObject->play();
// 获取可用的音频效果的描述
QList<Phonon::EffectDescription> effectDescriptions =
Phonon::BackendCapabilities::availableAudioEffects();
qDebug() << effectDescriptions;
Phonon::EffectDescription effectDescription = effectDescriptions.at(5);
// 使用指定的音频效果的描述来创建音频效果
Phonon::Effect *effect = new Phonon::Effect(effectDescription);
// 在路径中插入音频效果
path.insertEffect(effect);
// 创建效果部件，它可以用来更改效果中的参数
Phonon::EffectWidget *effectWidget = new Phonon::EffectWidget(effect);
effectWidget->show();
}
CaptureWidget::CaptureWidget(QWidget* parent, Qt::WindowFlags f): QWidget(parent, f)
{
// Create the objects used for capture
m_media = new Phonon::MediaObject(this);
// Create the audio and video outputs (sinks)
m_audioOutput = new Phonon::AudioOutput(this);
m_videoWidget = new Phonon::VideoWidget(this);
/*
* Set up the buttons and layouts and widgets
*/
m_playButton = new QPushButton(this);
m_playButton->setText(tr("Play"));
connect(m_playButton, SIGNAL(clicked()), this, SLOT(playPause()));
m_stopButton = new QPushButton(this);
m_stopButton->setText(tr("Stop"));
m_stopButton->setEnabled(false);
connect(m_stopButton, SIGNAL(clicked()), m_media, SLOT(stop()));
setLayout(new QVBoxLayout);
// Configure the video widget a bit
m_videoWidget->setMinimumSize(QSize(400, 300));
m_videoWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
layout()->addWidget(m_videoWidget);
QHBoxLayout *buttonsLayout = new QHBoxLayout();
buttonsLayout->addWidget(m_playButton);
buttonsLayout->addWidget(m_stopButton);
layout()->addItem(buttonsLayout);
/*
* Create the paths from the capture object to the outputs
* If the paths are invalid, then probably the backend doesn't support capture
*/
Phonon::Path audioPath = Phonon::createPath(m_media, m_audioOutput);
Phonon::Path videoPath = Phonon::createPath(m_media, m_videoWidget);
if (!audioPath.isValid()) {
QMessageBox::critical(this, "Error", "Your backend may not support audio capturing.");
}
if (!videoPath.isValid()) {
QMessageBox::critical(this, "Error", "Your backend may not support video capturing.");
}
/*
* Set up the devices used for capture
* Phonon can easily get you the devices appropriate for a specific category.
*/
Phonon::MediaSource source(Phonon::Capture::VideoType, Phonon::NoCaptureCategory);
m_media->setCurrentSource(source);
// Connect the stateChanged signal from the media object used for capture
connect(m_media, SIGNAL(stateChanged(Phonon::State,Phonon::State)),
this, SLOT(mediaStateChanged(Phonon::State)));
// Start capturing
playPause();
}