QMemoryVideoBuffer Class Reference

The QMemoryVideoBuffer class provides a system memory allocated video data buffer. More...

#include <qmemoryvideobuffer_p.h>

Inheritance diagram for QMemoryVideoBuffer:

Collaboration diagram for QMemoryVideoBuffer:

Public Member Functions
	QMemoryVideoBuffer (QByteArray data, int bytesPerLine)
	Constructs a video buffer with an image stride of bytesPerLine from a byte array.
	~QMemoryVideoBuffer ()
	Destroys a system memory allocated video buffer.
QVideoFrame::MapMode	mapMode () const override
	\reimp
MapData	map (QVideoFrame::MapMode mode) override
	\reimp
void	unmap () override
	\reimp
QByteArray	underlyingByteArray (int plane) const override
	\reimp
Public Member Functions inherited from QAbstractVideoBuffer
	QAbstractVideoBuffer (QVideoFrame::HandleType type, QRhi *rhi=nullptr)
	Constructs an abstract video buffer of the given type.
virtual	~QAbstractVideoBuffer ()
	Destroys an abstract video buffer.
QVideoFrame::HandleType	handleType () const
	Returns the type of a video buffer's handle.
QRhi *	rhi () const
	Returns the QRhi instance.
virtual std::unique_ptr< QVideoFrameTextures >	mapTextures (QRhi *)
virtual quint64	textureHandle (QRhi *, int) const
	Returns a texture handle to the data buffer.
virtual QMatrix4x4	externalTextureMatrix () const

Additional Inherited Members
Protected Attributes inherited from QAbstractVideoBuffer
QVideoFrame::HandleType	m_type
QRhi *	m_rhi = nullptr

Detailed Description

The QMemoryVideoBuffer class provides a system memory allocated video data buffer.

QMemoryVideoBuffer is the default video buffer for allocating system memory. It may be used to allocate memory for a QVideoFrame without implementing your own QAbstractVideoBuffer.

Definition at line 22 of file qmemoryvideobuffer_p.h.

Constructor & Destructor Documentation

QMemoryVideoBuffer()

QMemoryVideoBuffer::QMemoryVideoBuffer	(	QByteArray	data,
		int	bytesPerLine )

Constructs a video buffer with an image stride of bytesPerLine from a byte array.

Definition at line 20 of file qmemoryvideobuffer.cpp.

~QMemoryVideoBuffer()

QMemoryVideoBuffer::~QMemoryVideoBuffer ( )

default

Destroys a system memory allocated video buffer.

Member Function Documentation

map()

QAbstractVideoBuffer::MapData QMemoryVideoBuffer::map ( QVideoFrame::MapMode mode )

overridevirtual

\reimp

Implements QAbstractVideoBuffer.

Definition at line 43 of file qmemoryvideobuffer.cpp.

References QByteArray::constData(), QByteArray::data(), mapData(), QVideoFrame::NotMapped, QVideoFrame::ReadOnly, and QByteArray::size().

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mapMode()

QVideoFrame::MapMode QMemoryVideoBuffer::mapMode ( ) const

overridevirtual

\reimp

Implements QAbstractVideoBuffer.

Definition at line 35 of file qmemoryvideobuffer.cpp.

underlyingByteArray()

QByteArray QMemoryVideoBuffer::underlyingByteArray ( int plane ) const

overridevirtual

\reimp

Reimplemented from QAbstractVideoBuffer.

Definition at line 74 of file qmemoryvideobuffer.cpp.

unmap()

void QMemoryVideoBuffer::unmap ( )

overridevirtual

\reimp

Implements QAbstractVideoBuffer.

Definition at line 66 of file qmemoryvideobuffer.cpp.

References QVideoFrame::NotMapped.

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

• qtmultimedia/src/multimedia/video/qmemoryvideobuffer_p.h (70c4bf4c565c3ace547f5cbd0398953fcd1ff4f3)
• qtmultimedia/src/multimedia/video/qmemoryvideobuffer.cpp (70c4bf4c565c3ace547f5cbd0398953fcd1ff4f3)