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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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Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
MFStream Class Reference

#include <mfstream_p.h>

+ Inheritance diagram for MFStream:
+ Collaboration diagram for MFStream:

Public Member Functions

 MFStream (QIODevice *stream, bool ownStream)
 
 ~MFStream ()
 
STDMETHODIMP QueryInterface (REFIID riid, LPVOID *ppvObject) override
 
 STDMETHODIMP_ (ULONG) AddRef(void) override
 
 STDMETHODIMP_ (ULONG) Release(void) override
 
STDMETHODIMP GetCapabilities (DWORD *pdwCapabilities) override
 
STDMETHODIMP GetLength (QWORD *pqwLength) override
 
STDMETHODIMP SetLength (QWORD) override
 
STDMETHODIMP GetCurrentPosition (QWORD *pqwPosition) override
 
STDMETHODIMP SetCurrentPosition (QWORD qwPosition) override
 
STDMETHODIMP IsEndOfStream (BOOL *pfEndOfStream) override
 
STDMETHODIMP Read (BYTE *pb, ULONG cb, ULONG *pcbRead) override
 
STDMETHODIMP BeginRead (BYTE *pb, ULONG cb, IMFAsyncCallback *pCallback, IUnknown *punkState) override
 
STDMETHODIMP EndRead (IMFAsyncResult *pResult, ULONG *pcbRead) override
 
STDMETHODIMP Write (const BYTE *, ULONG, ULONG *) override
 
STDMETHODIMP BeginWrite (const BYTE *, ULONG, IMFAsyncCallback *, IUnknown *) override
 
STDMETHODIMP EndWrite (IMFAsyncResult *, ULONG *) override
 
STDMETHODIMP Seek (MFBYTESTREAM_SEEK_ORIGIN SeekOrigin, LONGLONG llSeekOffset, DWORD, QWORD *pqwCurrentPosition) override
 
STDMETHODIMP Flush () override
 
STDMETHODIMP Close () override
 
- 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< QString > bindableObjectName ()
 
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).
 
QThread * thread () 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 >
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 >
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 QObjectList & children () 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< QByteArray > dynamicPropertyNames () const
 
QBindingStorage * bindingStorage ()
 
const QBindingStorage * bindingStorage () const
 
QObject * parent () 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 Member Functions

void customEvent (QEvent *event) override
 This event handler can be reimplemented in a subclass to receive custom events.
 
- Protected Member Functions inherited from QObject
QObject * sender () 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 connectNotify (const QMetaMethod &signal)
 
virtual void disconnectNotify (const QMetaMethod &signal)
 
 QObject (QObjectPrivate &dd, QObject *parent=nullptr)
 

Protected Attributes

IMFAsyncResult * m_currentReadResult
 
- Protected Attributes inherited from QObject
QScopedPointer< QObjectData > d_ptr
 

Additional Inherited Members

- Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
 
- 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)
 
- Properties inherited from QObject
QString objectName
 the name of this object
 
- Related Symbols inherited from QObject
 Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.
 
 
 
 \macro Q_CLASSINFO(Name, Value)
 

Detailed Description

Definition at line 27 of file mfstream_p.h.

Constructor & Destructor Documentation

◆ MFStream()

QT_BEGIN_NAMESPACE MFStream::MFStream ( QIODevice * stream,
bool ownStream )

Definition at line 11 of file mfstream.cpp.

References QObject::moveToThread(), and QObject::thread().

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◆ ~MFStream()

MFStream::~MFStream ( )

Definition at line 23 of file mfstream.cpp.

References QObject::deleteLater(), and m_currentReadResult.

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Member Function Documentation

◆ BeginRead()

STDMETHODIMP MFStream::BeginRead ( BYTE * pb,
ULONG cb,
IMFAsyncCallback * pCallback,
IUnknown * punkState )
override

Definition at line 131 of file mfstream.cpp.

References cb, m_currentReadResult, QCoreApplication::postEvent(), Q_ASSERT, state, and QEvent::User.

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◆ BeginWrite()

STDMETHODIMP MFStream::BeginWrite ( const BYTE * ,
ULONG ,
IMFAsyncCallback * ,
IUnknown *  )
override

Definition at line 173 of file mfstream.cpp.

◆ Close()

STDMETHODIMP MFStream::Close ( )
override

Definition at line 218 of file mfstream.cpp.

References QIODevice::close().

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◆ customEvent()

void MFStream::customEvent ( QEvent * event)
overrideprotectedvirtual

This event handler can be reimplemented in a subclass to receive custom events.

Custom events are user-defined events with a type value at least as large as the QEvent::User item of the QEvent::Type enum, and is typically a QEvent subclass. The event is passed in the event parameter.

See also
event(), QEvent

Reimplemented from QObject.

Definition at line 254 of file mfstream.cpp.

References QObject::customEvent(), and QEvent::User.

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◆ EndRead()

STDMETHODIMP MFStream::EndRead ( IMFAsyncResult * pResult,
ULONG * pcbRead )
override

Definition at line 152 of file mfstream.cpp.

References m_currentReadResult, and state.

◆ EndWrite()

STDMETHODIMP MFStream::EndWrite ( IMFAsyncResult * ,
ULONG *  )
override

Definition at line 180 of file mfstream.cpp.

◆ Flush()

STDMETHODIMP MFStream::Flush ( )
override

Definition at line 213 of file mfstream.cpp.

◆ GetCapabilities()

STDMETHODIMP MFStream::GetCapabilities ( DWORD * pdwCapabilities)
override

Definition at line 64 of file mfstream.cpp.

References QIODevice::isSequential().

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◆ GetCurrentPosition()

STDMETHODIMP MFStream::GetCurrentPosition ( QWORD * pqwPosition)
override

Definition at line 88 of file mfstream.cpp.

References QIODevice::pos().

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◆ GetLength()

STDMETHODIMP MFStream::GetLength ( QWORD * pqwLength)
override

Definition at line 74 of file mfstream.cpp.

References QIODevice::size().

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◆ IsEndOfStream()

STDMETHODIMP MFStream::IsEndOfStream ( BOOL * pfEndOfStream)
override

Definition at line 113 of file mfstream.cpp.

References QIODevice::atEnd().

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◆ QueryInterface()

STDMETHODIMP MFStream::QueryInterface ( REFIID riid,
LPVOID * ppvObject )
override

Definition at line 32 of file mfstream.cpp.

References riid.

◆ Read()

STDMETHODIMP MFStream::Read ( BYTE * pb,
ULONG cb,
ULONG * pcbRead )
override

Definition at line 122 of file mfstream.cpp.

References cb, QIODevice::read(), and read().

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◆ Seek()

STDMETHODIMP MFStream::Seek ( MFBYTESTREAM_SEEK_ORIGIN SeekOrigin,
LONGLONG llSeekOffset,
DWORD ,
QWORD * pqwCurrentPosition )
override

Definition at line 186 of file mfstream.cpp.

References m_currentReadResult, pos, QIODevice::pos(), and QIODevice::seek().

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◆ SetCurrentPosition()

STDMETHODIMP MFStream::SetCurrentPosition ( QWORD qwPosition)
override

Definition at line 97 of file mfstream.cpp.

References m_currentReadResult, and QIODevice::seek().

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◆ SetLength()

STDMETHODIMP MFStream::SetLength ( QWORD )
override

Definition at line 83 of file mfstream.cpp.

◆ STDMETHODIMP_() [1/2]

MFStream::STDMETHODIMP_ ( ULONG )
override

◆ STDMETHODIMP_() [2/2]

MFStream::STDMETHODIMP_ ( ULONG )
override

◆ Write()

STDMETHODIMP MFStream::Write ( const BYTE * ,
ULONG ,
ULONG *  )
override

Definition at line 168 of file mfstream.cpp.

Member Data Documentation

◆ m_currentReadResult

IMFAsyncResult* MFStream::m_currentReadResult
protected

Definition at line 119 of file mfstream_p.h.

Referenced by ~MFStream(), BeginRead(), EndRead(), Seek(), and SetCurrentPosition().

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