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Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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QGStreamerAudioSink Class Reference

#include <qgstreameraudiosink_p.h>

+ Inheritance diagram for QGStreamerAudioSink:
+ Collaboration diagram for QGStreamerAudioSink:

Public Member Functions

 ~QGStreamerAudioSink ()
 
void start (QIODevice *device) override
 
QIODevicestart () override
 
void stop () override
 
void reset () override
 
void suspend () override
 
void resume () override
 
qsizetype bytesFree () const override
 
void setBufferSize (qsizetype value) override
 
qsizetype bufferSize () const override
 
qint64 processedUSecs () const override
 
QAudio::Error error () const override
 
QAudio::State state () const override
 
void setFormat (const QAudioFormat &format) override
 
QAudioFormat format () const override
 
void setVolume (qreal volume) override
 
qreal volume () const override
 
- Public Member Functions inherited from QPlatformAudioSink
 QPlatformAudioSink (QObject *parent)
 
- Public Member Functions inherited from QAudioStateChangeNotifier
 QAudioStateChangeNotifier (QObject *parent=nullptr)
 
- Public Member Functions inherited from QObject
Q_INVOKABLE QObject (QObject *parent=nullptr)
 Constructs an object with parent object parent.
 
virtual ~QObject ()
 Destroys the object, deleting all its child objects.
 
virtual bool event (QEvent *event)
 This virtual function receives events to an object and should return true if the event e was recognized and processed.
 
virtual bool eventFilter (QObject *watched, QEvent *event)
 Filters events if this object has been installed as an event filter for the watched object.
 
QString objectName () const
 
Q_WEAK_OVERLOAD void setObjectName (const QString &name)
 Sets the object's name to name.
 
void setObjectName (QAnyStringView name)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
 
QBindable< QStringbindableObjectName ()
 
bool isWidgetType () const
 Returns true if the object is a widget; otherwise returns false.
 
bool isWindowType () const
 Returns true if the object is a window; otherwise returns false.
 
bool isQuickItemType () const
 Returns true if the object is a QQuickItem; otherwise returns false.
 
bool signalsBlocked () const noexcept
 Returns true if signals are blocked; otherwise returns false.
 
bool blockSignals (bool b) noexcept
 If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).
 
QThreadthread () const
 Returns the thread in which the object lives.
 
bool moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
 Changes the thread affinity for this object and its children and returns true on success.
 
int startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
 This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.
 
int startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)
 
void killTimer (int id)
 Kills the timer with timer identifier, id.
 
void killTimer (Qt::TimerId id)
 
template<typename T >
findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.
 
template<typename T >
QList< T > findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.
 
template<typename T >
findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
 
template<typename T >
QList< T > findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
 
const QObjectListchildren () const
 Returns a list of child objects.
 
void setParent (QObject *parent)
 Makes the object a child of parent.
 
void installEventFilter (QObject *filterObj)
 Installs an event filter filterObj on this object.
 
void removeEventFilter (QObject *obj)
 Removes an event filter object obj from this object.
 
QMetaObject::Connection connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
 
bool disconnect (const char *signal=nullptr, const QObject *receiver=nullptr, const char *member=nullptr) const
 
bool disconnect (const QObject *receiver, const char *member=nullptr) const
 
void dumpObjectTree () const
 Dumps a tree of children to the debug output.
 
void dumpObjectInfo () const
 Dumps information about signal connections, etc.
 
bool setProperty (const char *name, const QVariant &value)
 Sets the value of the object's name property to value.
 
bool setProperty (const char *name, QVariant &&value)
 
QVariant property (const char *name) const
 Returns the value of the object's name property.
 
QList< QByteArraydynamicPropertyNames () const
 
QBindingStoragebindingStorage ()
 
const QBindingStoragebindingStorage () const
 
QObjectparent () const
 Returns a pointer to the parent object.
 
bool inherits (const char *classname) const
 Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false.
 

Static Public Member Functions

static QMaybe< QPlatformAudioSink * > create (const QAudioDevice &device, QObject *parent)
 
- Static Public Member Functions inherited from QObject
static QMetaObject::Connection connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
 \threadsafe
 
static QMetaObject::Connection connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
 
template<typename Func1 , typename Func2 >
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType *context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)
 
template<typename Func1 , typename Func2 >
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)
 
static bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
 \threadsafe
 
static bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
 
static bool disconnect (const QMetaObject::Connection &)
 Disconnect a connection.
 
template<typename Func1 , typename Func2 >
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiver, Func2 slot)
 
template<typename Func1 >
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *receiver, void **zero)
 

Private Member Functions

bool processBusMessage (const QGstreamerMessage &message) override
 

Friends

class GStreamerOutputPrivate
 

Additional Inherited Members

- Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
 
- Signals inherited from QAudioStateChangeNotifier
void errorChanged (QAudio::Error error)
 
void stateChanged (QAudio::State state)
 
- Signals inherited from QObject
void destroyed (QObject *=nullptr)
 This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.
 
void objectNameChanged (const QString &objectName, QPrivateSignal)
 This signal is emitted after the object's name has been changed.
 
- Public Attributes inherited from QPlatformAudioSink
QElapsedTimer elapsedTime
 
- Protected Member Functions inherited from QObject
QObjectsender () const
 Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.
 
int senderSignalIndex () const
 
int receivers (const char *signal) const
 Returns the number of receivers connected to the signal.
 
bool isSignalConnected (const QMetaMethod &signal) const
 
virtual void timerEvent (QTimerEvent *event)
 This event handler can be reimplemented in a subclass to receive timer events for the object.
 
virtual void childEvent (QChildEvent *event)
 This event handler can be reimplemented in a subclass to receive child events.
 
virtual void customEvent (QEvent *event)
 This event handler can be reimplemented in a subclass to receive custom events.
 
virtual void connectNotify (const QMetaMethod &signal)
 
virtual void disconnectNotify (const QMetaMethod &signal)
 
 QObject (QObjectPrivate &dd, QObject *parent=nullptr)
 
- Protected Attributes inherited from QObject
QScopedPointer< QObjectDatad_ptr
 
- Properties inherited from QObject
QString objectName
 the name of this object
 

Detailed Description

Definition at line 38 of file qgstreameraudiosink_p.h.

Constructor & Destructor Documentation

◆ ~QGStreamerAudioSink()

QGStreamerAudioSink::~QGStreamerAudioSink ( )

Definition at line 71 of file qgstreameraudiosink.cpp.

References QGstPipeline::removeMessageFilter().

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Member Function Documentation

◆ bufferSize()

qsizetype QGStreamerAudioSink::bufferSize ( ) const
overridevirtual

Implements QPlatformAudioSink.

Definition at line 271 of file qgstreameraudiosink.cpp.

◆ bytesFree()

qsizetype QGStreamerAudioSink::bytesFree ( ) const
overridevirtual

Implements QPlatformAudioSink.

Definition at line 256 of file qgstreameraudiosink.cpp.

References QAudio::ActiveState, QGstAppSource::canAcceptMoreData(), and QAudio::IdleState.

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◆ create()

QT_BEGIN_NAMESPACE QMaybe< QPlatformAudioSink * > QGStreamerAudioSink::create ( const QAudioDevice & device,
QObject * parent )
static

Definition at line 24 of file qgstreameraudiosink.cpp.

References QGstAppSource::create(), QGstElement::createFromFactory(), device, errorMessageCannotFindElement(), QObject::parent(), and volume().

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◆ error()

QAudio::Error QGStreamerAudioSink::error ( ) const
overridevirtual

Implements QPlatformAudioSink.

Definition at line 92 of file qgstreameraudiosink.cpp.

◆ format()

QAudioFormat QGStreamerAudioSink::format ( ) const
overridevirtual

Implements QPlatformAudioSink.

Definition at line 301 of file qgstreameraudiosink.cpp.

Referenced by setFormat().

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◆ processBusMessage()

bool QGStreamerAudioSink::processBusMessage ( const QGstreamerMessage & message)
overrideprivatevirtual

Implements QGstreamerBusMessageFilter.

Definition at line 175 of file qgstreameraudiosink.cpp.

References QAudio::IdleState, QAudio::IOError, and qDebug.

◆ processedUSecs()

qint64 QGStreamerAudioSink::processedUSecs ( ) const
overridevirtual

Implements QPlatformAudioSink.

Definition at line 276 of file qgstreameraudiosink.cpp.

References QAudioFormat::bytesPerFrame(), and QAudioFormat::sampleRate().

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◆ reset()

void QGStreamerAudioSink::reset ( )
overridevirtual

Implements QPlatformAudioSink.

Definition at line 319 of file qgstreameraudiosink.cpp.

References stop().

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◆ resume()

void QGStreamerAudioSink::resume ( )
overridevirtual

Implements QPlatformAudioSink.

Definition at line 285 of file qgstreameraudiosink.cpp.

References QAudio::NoError, QGstAppSource::resume(), QGstPipeline::setState(), and QAudio::SuspendedState.

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◆ setBufferSize()

void QGStreamerAudioSink::setBufferSize ( qsizetype value)
overridevirtual

Implements QPlatformAudioSink.

Definition at line 264 of file qgstreameraudiosink.cpp.

References QGstElement::element(), and QGstPointerImpl::QGstObjectWrapper< GstType >::isNull().

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◆ setFormat()

void QGStreamerAudioSink::setFormat ( const QAudioFormat & format)
overridevirtual

Implements QPlatformAudioSink.

Definition at line 296 of file qgstreameraudiosink.cpp.

References format().

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◆ setVolume()

void QGStreamerAudioSink::setVolume ( qreal volume)
overridevirtual

Reimplemented from QPlatformAudioSink.

Definition at line 344 of file qgstreameraudiosink.cpp.

References QGstPointerImpl::QGstObjectWrapper< GstType >::isNull(), and QGstObject::set().

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◆ start() [1/2]

QIODevice * QGStreamerAudioSink::start ( )
overridevirtual

Implements QPlatformAudioSink.

Definition at line 135 of file qgstreameraudiosink.cpp.

References GStreamerOutputPrivate, QAudio::IdleState, QAudioFormat::isValid(), QAudio::NoError, QIODevice::open(), QAudio::OpenError, QAudio::StoppedState, QIODeviceBase::Unbuffered, and QIODeviceBase::WriteOnly.

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◆ start() [2/2]

void QGStreamerAudioSink::start ( QIODevice * device)
overridevirtual

Implements QPlatformAudioSink.

Definition at line 111 of file qgstreameraudiosink.cpp.

References QAudio::ActiveState, device, QAudioFormat::isValid(), QAudio::NoError, QAudio::OpenError, and QAudio::StoppedState.

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◆ state()

QAudio::State QGStreamerAudioSink::state ( ) const
overridevirtual

Implements QPlatformAudioSink.

Definition at line 106 of file qgstreameraudiosink.cpp.

Referenced by GStreamerOutputPrivate::writeData().

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◆ stop()

void QGStreamerAudioSink::stop ( )
overridevirtual

Implements QPlatformAudioSink.

Definition at line 245 of file qgstreameraudiosink.cpp.

References QAudio::NoError, and QAudio::StoppedState.

Referenced by reset().

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◆ suspend()

void QGStreamerAudioSink::suspend ( )
overridevirtual

Implements QPlatformAudioSink.

Definition at line 306 of file qgstreameraudiosink.cpp.

References QAudio::ActiveState, QAudio::IdleState, QAudio::NoError, QGstPipeline::setState(), QGstAppSource::suspend(), and QAudio::SuspendedState.

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◆ volume()

qreal QGStreamerAudioSink::volume ( ) const
overridevirtual

Reimplemented from QPlatformAudioSink.

Definition at line 354 of file qgstreameraudiosink.cpp.

Referenced by create().

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Friends And Related Symbol Documentation

◆ GStreamerOutputPrivate

friend class GStreamerOutputPrivate
friend

Definition at line 42 of file qgstreameraudiosink_p.h.

Referenced by start().


The documentation for this class was generated from the following files: