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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
commite5fcad302d86d316390c6b0f62759a067313e8a9 (patch)
treec2afbf6f1066b6ce261f14341cf6d310e5595bc1 /doc/src/snippets/code/doc_src_phonon-api.qdoc
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Long live Qt 4.5!
Diffstat (limited to 'doc/src/snippets/code/doc_src_phonon-api.qdoc')
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1 files changed, 224 insertions, 0 deletions
diff --git a/doc/src/snippets/code/doc_src_phonon-api.qdoc b/doc/src/snippets/code/doc_src_phonon-api.qdoc
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@@ -0,0 +1,224 @@
+//! [0]
+PushStream::PushStream(QObject *parent)
+ : AbstractMediaStream(parent), m_timer(new QTimer(this))
+{
+ setStreamSize(getMediaStreamSize());
+
+ connect(m_timer, SIGNAL(timeout()), SLOT(moreData()));
+ m_timer->setInterval(0);
+}
+
+void PushStream::moreData()
+{
+ const QByteArray data = getMediaData();
+ if (data.isEmpty()) {
+ endOfData();
+ } else {
+ writeData(data);
+ }
+}
+
+void PushStream::needData()
+{
+ m_timer->start();
+ moreData();
+}
+
+void PushStream::enoughData()
+{
+ m_timer->stop();
+}
+//! [0]
+
+
+//! [1]
+PullStream::PullStream(QObject *parent)
+ : AbstractMediaStream(parent)
+{
+ setStreamSize(getMediaStreamSize());
+}
+
+void PullStream::needData()
+{
+ const QByteArray data = getMediaData();
+ if (data.isEmpty()) {
+ endOfData();
+ } else {
+ writeData(data);
+ }
+}
+//! [1]
+
+
+//! [2]
+seekStream(0);
+//! [2]
+
+
+//! [3]
+MediaObject m;
+QString fileName("/home/foo/bar.ogg");
+QUrl url("http://www.example.com/stream.mp3");
+QBuffer *someBuffer;
+m.setCurrentSource(fileName);
+m.setCurrentSource(url);
+m.setCurrentSource(someBuffer);
+m.setCurrentSource(Phonon::Cd);
+//! [3]
+
+
+//! [4]
+VideoPlayer *player = new VideoPlayer(Phonon::VideoCategory, parentWidget);
+connect(player, SIGNAL(finished()), player, SLOT(deleteLater()));
+player->play(url);
+//! [4]
+
+
+//! [5]
+audioPlayer->load(url);
+audioPlayer->play();
+//! [5]
+
+
+//! [6]
+media = new MediaObject(this);
+connect(media, SIGNAL(finished()), SLOT(slotFinished());
+media->setCurrentSource("/home/username/music/filename.ogg");
+
+...
+
+media->play();
+//! [6]
+
+
+//! [7]
+media->setCurrentSource(":/sounds/startsound.ogg");
+media->enqueue("/home/username/music/song.mp3");
+media->enqueue(":/sounds/endsound.ogg");
+//! [7]
+
+
+//! [8]
+ media->setCurrentSource(":/sounds/startsound.ogg");
+ connect(media, SIGNAL(aboutToFinish()), SLOT(enqueueNextSource()));
+}
+
+void enqueueNextSource()
+{
+ media->enqueue("/home/username/music/song.mp3");
+}
+//! [8]
+
+
+//! [9]
+int x = 200;
+media->setTickInterval(x);
+Q_ASSERT(x == producer->tickInterval());
+//! [9]
+
+
+//! [10]
+int x = 200;
+media->setTickInterval(x);
+Q_ASSERT(x >= producer->tickInterval() &&
+ x <= 2producer->tickInterval());
+//! [10]
+
+
+//! [11]
+ connect(media, SIGNAL(hasVideoChanged(bool)), hasVideoChanged(bool));
+ media->setCurrentSource("somevideo.avi");
+ media->hasVideo(); // returns false;
+}
+
+void hasVideoChanged(bool b)
+{
+ // b == true
+ media->hasVideo(); // returns true;
+}
+//! [11]
+
+
+//! [12]
+ connect(media, SIGNAL(hasVideoChanged(bool)), hasVideoChanged(bool));
+ media->setCurrentSource("somevideo.avi");
+ media->hasVideo(); // returns false;
+}
+
+void hasVideoChanged(bool b)
+{
+ // b == true
+ media->hasVideo(); // returns true;
+}
+//! [12]
+
+
+//! [13]
+setMetaArtist(media->metaData("ARTIST"));
+setMetaAlbum(media->metaData("ALBUM"));
+setMetaTitle(media->metaData("TITLE"));
+setMetaDate(media->metaData("DATE"));
+setMetaGenre(media->metaData("GENRE"));
+setMetaTrack(media->metaData("TRACKNUMBER"));
+setMetaComment(media->metaData("DESCRIPTION"));
+//! [13]
+
+
+//! [14]
+QUrl url("http://www.example.com/music.ogg");
+media->setCurrentSource(url);
+//! [14]
+
+
+//! [15]
+progressBar->setRange(0, 100); // this is the default
+connect(media, SIGNAL(bufferStatus(int)), progressBar, SLOT(setValue(int)));
+//! [15]
+
+
+//! [16]
+QObject::connect(BackendCapabilities::notifier(), SIGNAL(capabilitiesChanged()), ...
+//! [16]
+
+
+//! [17]
+QComboBox *cb = new QComboBox(parentWidget);
+ObjectDescriptionModel *model = new ObjectDescriptionModel(cb);
+model->setModelData(BackendCapabilities::availableAudioOutputDevices());
+cb->setModel(model);
+cb->setCurrentIndex(0); // select first entry
+//! [17]
+
+
+//! [18]
+int cbIndex = cb->currentIndex();
+AudioOutputDevice selectedDevice = model->modelData(cbIndex);
+//! [18]
+
+
+//! [19]
+Path path = Phonon::createPath(...);
+Effect *effect = new Effect(this);
+path.insertEffect(effect);
+//! [19]
+
+
+//! [20]
+MediaObject *media = new MediaObject;
+AudioOutput *output = new AudioOutput(Phonon::MusicCategory);
+Path path = Phonon::createPath(media, output);
+Q_ASSERT(path.isValid()); // for this simple case the path should always be
+ //valid - there are unit tests to ensure it
+// insert an effect
+QList<EffectDescription> effectList = BackendCapabilities::availableAudioEffects();
+if (!effectList.isEmpty()) {
+ Effect *effect = path.insertEffect(effectList.first());
+}
+//! [20]
+
+
+//! [21]
+MediaObject *media = new MediaObject(parent);
+VideoWidget *vwidget = new VideoWidget(parent);
+Phonon::createPath(media, vwidget);
+//! [21]