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QFFmpeg::AudioRenderer Class Reference

#include <qffmpegaudiorenderer_p.h>

Inheritance diagram for QFFmpeg::AudioRenderer:
Collaboration diagram for QFFmpeg::AudioRenderer:

Classes

struct  AudioTimings
struct  BufferedDataWithOffset
struct  BufferLoadingInfo
struct  SynchronizationStamp

Public Member Functions

 AudioRenderer (const PlaybackEngineObjectID &id, const TimeController &tc, QAudioOutput *output, QAudioBufferOutput *bufferOutput, bool pitchCompensation)
void setOutput (QAudioOutput *output)
void setOutput (QAudioBufferOutput *bufferOutput)
void setPitchCompensation (bool enabled)
 ~AudioRenderer () override
Public Member Functions inherited from QFFmpeg::Renderer
 Renderer (const PlaybackEngineObjectID &id, const TimeController &tc)
TrackPosition seekPosition () const
TrackPosition lastPosition () const
void setPlaybackRate (float rate)
void doForceStep ()
bool isStepForced () const
void setTimeController (const TimeController &tc)
Public Member Functions inherited from QFFmpeg::PlaybackEngineObject
 PlaybackEngineObject (const PlaybackEngineObjectID &id)
 ~PlaybackEngineObject () override
bool isPaused () const
bool isAtEnd () const
void kill ()
void setPaused (bool isPaused)
quint64 objectID () const
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 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 isQmlObjectType () const
 Returns whether the object has been created by the QML engine or ownership has been explicitly set via QJSEngine::setObjectOwnership().
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.

Protected Types

using Microseconds = std::chrono::microseconds

Protected Member Functions

RenderingResult renderInternal (Frame frame) override
RenderingResult pushFrameToOutput (const Frame &frame)
void pushFrameToBufferOutput (const Frame &frame)
void onPlaybackRateChanged () override
TimePoint nextTimePoint () const override
void onPauseChanged () override
void freeOutput ()
void updateOutputs (const Frame &frame)
void initAudioFrameConverter (const Frame &frame)
void onDeviceChanged ()
void updateVolume ()
void updateSynchronization (const SynchronizationStamp &stamp, const Frame &frame)
Microseconds bufferLoadingTime (const SynchronizationStamp &syncStamp) const
void onAudioSinkStateChanged (QAudio::State state)
Microseconds durationForBytes (qsizetype bytes) const
Protected Member Functions inherited from QFFmpeg::Renderer
bool setForceStepDone ()
void onPauseChanged () override
bool canDoNextStep () const override
TimePoint nextTimePoint () const override
float playbackRate () const
std::chrono::microseconds frameDelay (const Frame &frame, TimePoint timePoint=SteadyClock::now()) const
void changeRendererTime (std::chrono::microseconds offset)
template<typename Output, typename ChangeHandler>
void setOutputInternal (QPointer< Output > &actual, Output *desired, ChangeHandler &&changeHandler)
Protected Member Functions inherited from QFFmpeg::PlaybackEngineObject
bool event (QEvent *e) override
 This virtual function receives events to an object and should return true if the event e was recognized and processed.
bool checkSessionID (quint64 sessionID) const
bool checkID (const PlaybackEngineObjectID &id) const
const PlaybackEngineObjectIDid () const
template<typename F>
void invokePriorityMethod (F &&f)
QChronoTimertimer ()
void scheduleNextStep ()
void setAtEnd (bool isAtEnd)
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)

Additional Inherited Members

Public Types inherited from QFFmpeg::Renderer
using TimePoint = SteadyClock::time_point
Public Types inherited from QFFmpeg::PlaybackEngineObject
using TimePoint = std::chrono::steady_clock::time_point
using TimePointOpt = std::optional<TimePoint>
Public Slots inherited from QFFmpeg::Renderer
void onFinalFrameReceived (PlaybackEngineObjectID sourceID)
void render (Frame)
Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
Signals inherited from QFFmpeg::Renderer
void frameProcessed (Frame)
void synchronized (PlaybackEngineObjectID id, TimePoint tp, TrackPosition pos)
void forceStepDone ()
void loopChanged (PlaybackEngineObjectID id, TrackPosition offset, int index)
Signals inherited from QFFmpeg::PlaybackEngineObject
void atEnd (PlaybackEngineObjectID id)
void error (QMediaPlayer::Error, const QString &errorString)
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.
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)
Protected Attributes inherited from QObject
QScopedPointer< QObjectDatad_ptr
Properties inherited from QObject
QString objectName
 the name of this object

Detailed Description

Definition at line 32 of file qffmpegaudiorenderer_p.h.

Member Typedef Documentation

◆ Microseconds

using QFFmpeg::AudioRenderer::Microseconds = std::chrono::microseconds
protected

Definition at line 48 of file qffmpegaudiorenderer_p.h.

Constructor & Destructor Documentation

◆ AudioRenderer()

QFFmpeg::AudioRenderer::AudioRenderer ( const PlaybackEngineObjectID & id,
const TimeController & tc,
QAudioOutput * output,
QAudioBufferOutput * bufferOutput,
bool pitchCompensation )

Definition at line 47 of file qffmpegaudiorenderer.cpp.

◆ ~AudioRenderer()

QFFmpeg::AudioRenderer::~AudioRenderer ( )
override

Definition at line 85 of file qffmpegaudiorenderer.cpp.

References freeOutput().

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Member Function Documentation

◆ bufferLoadingTime()

microseconds QFFmpeg::AudioRenderer::bufferLoadingTime ( const SynchronizationStamp & syncStamp) const
protected

Definition at line 371 of file qffmpegaudiorenderer.cpp.

◆ durationForBytes()

microseconds QFFmpeg::AudioRenderer::durationForBytes ( qsizetype bytes) const
protected

Definition at line 397 of file qffmpegaudiorenderer.cpp.

◆ freeOutput()

void QFFmpeg::AudioRenderer::freeOutput ( )
protected

Definition at line 231 of file qffmpegaudiorenderer.cpp.

Referenced by ~AudioRenderer(), and updateOutputs().

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◆ initAudioFrameConverter()

void QFFmpeg::AudioRenderer::initAudioFrameConverter ( const Frame & frame)
protected

Definition at line 220 of file qffmpegaudiorenderer.cpp.

◆ nextTimePoint()

AudioRenderer::TimePoint QFFmpeg::AudioRenderer::nextTimePoint ( ) const
overrideprotectedvirtual

Reimplemented from QFFmpeg::PlaybackEngineObject.

Definition at line 192 of file qffmpegaudiorenderer.cpp.

◆ onAudioSinkStateChanged()

void QFFmpeg::AudioRenderer::onAudioSinkStateChanged ( QAudio::State state)
protected

Definition at line 391 of file qffmpegaudiorenderer.cpp.

◆ onDeviceChanged()

void QFFmpeg::AudioRenderer::onDeviceChanged ( )
protected

Definition at line 96 of file qffmpegaudiorenderer.cpp.

◆ onPauseChanged()

void QFFmpeg::AudioRenderer::onPauseChanged ( )
overrideprotectedvirtual

Reimplemented from QFFmpeg::PlaybackEngineObject.

Definition at line 214 of file qffmpegaudiorenderer.cpp.

◆ onPlaybackRateChanged()

void QFFmpeg::AudioRenderer::onPlaybackRateChanged ( )
overrideprotectedvirtual

Reimplemented from QFFmpeg::Renderer.

Definition at line 187 of file qffmpegaudiorenderer.cpp.

◆ pushFrameToBufferOutput()

void QFFmpeg::AudioRenderer::pushFrameToBufferOutput ( const Frame & frame)
protected

Definition at line 171 of file qffmpegaudiorenderer.cpp.

◆ pushFrameToOutput()

AudioRenderer::RenderingResult QFFmpeg::AudioRenderer::pushFrameToOutput ( const Frame & frame)
protected

Definition at line 119 of file qffmpegaudiorenderer.cpp.

◆ renderInternal()

Renderer::RenderingResult QFFmpeg::AudioRenderer::renderInternal ( Frame frame)
overrideprotectedvirtual

Implements QFFmpeg::Renderer.

Definition at line 101 of file qffmpegaudiorenderer.cpp.

◆ setOutput() [1/2]

void QFFmpeg::AudioRenderer::setOutput ( QAudioBufferOutput * bufferOutput)

Definition at line 68 of file qffmpegaudiorenderer.cpp.

◆ setOutput() [2/2]

void QFFmpeg::AudioRenderer::setOutput ( QAudioOutput * output)

Definition at line 63 of file qffmpegaudiorenderer.cpp.

◆ setPitchCompensation()

void QFFmpeg::AudioRenderer::setPitchCompensation ( bool enabled)

Definition at line 74 of file qffmpegaudiorenderer.cpp.

Referenced by QFFmpeg::PlaybackEngine::setPitchCompensation().

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◆ updateOutputs()

void QFFmpeg::AudioRenderer::updateOutputs ( const Frame & frame)
protected

Definition at line 250 of file qffmpegaudiorenderer.cpp.

References freeOutput(), QAudioFormat::isValid(), and updateVolume().

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◆ updateSynchronization()

void QFFmpeg::AudioRenderer::updateSynchronization ( const SynchronizationStamp & stamp,
const Frame & frame )
protected

◆ updateVolume()

void QFFmpeg::AudioRenderer::updateVolume ( )
protected

Definition at line 90 of file qffmpegaudiorenderer.cpp.

Referenced by updateOutputs().

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