Inheritance diagram for IMFSampleVideoBuffer:

Collaboration diagram for IMFSampleVideoBuffer:

Public Member Functions
	IMFSampleVideoBuffer (ComPtr< IDirect3DDevice9Ex > device, const ComPtr< IMFSample > &sample, QRhi *rhi, QVideoFrame::HandleType type=QVideoFrame::NoHandle)

	~IMFSampleVideoBuffer () override

MapData	map (QtVideo::MapMode mode) override
	Maps the planes of a video buffer to memory.

void	unmap () override
	Releases the memory mapped by the map() function.

Public Member Functions inherited from QHwVideoBuffer
	QHwVideoBuffer (QVideoFrame::HandleType type, QRhi *rhi=nullptr)

	~QHwVideoBuffer () override

QVideoFrame::HandleType	handleType () const

QRhi *	rhi () const

QVideoFrameFormat	format () const override
	Gets \l QVideoFrameFormat of the underlying video buffer.

virtual std::unique_ptr< QVideoFrameTextures >	mapTextures (QRhi *)

virtual quint64	textureHandle (QRhi *, int) const

virtual QMatrix4x4	externalTextureMatrix () const

Public Member Functions inherited from QAbstractVideoBuffer
virtual	~QAbstractVideoBuffer ()
	\variable QAbstractVideoBuffer::MapData::planeCount

Protected Attributes
ComPtr< IDirect3DDevice9Ex >	m_device

ComPtr< IMFSample >	m_sample

Protected Attributes inherited from QHwVideoBuffer
QVideoFrame::HandleType	m_type

QRhi *	m_rhi = nullptr

Detailed Description

Definition at line 30 of file evrd3dpresentengine.cpp.

Constructor & Destructor Documentation

◆ IMFSampleVideoBuffer()

IMFSampleVideoBuffer::IMFSampleVideoBuffer	(	ComPtr< IDirect3DDevice9Ex >	device,
		const ComPtr< IMFSample > &	sample,
		QRhi *	rhi,
		QVideoFrame::HandleType	type = QVideoFrame::NoHandle )

inline

Definition at line 33 of file evrd3dpresentengine.cpp.

◆ ~IMFSampleVideoBuffer()

IMFSampleVideoBuffer::~IMFSampleVideoBuffer ( )

inlineoverride

Definition at line 42 of file evrd3dpresentengine.cpp.

References QtVideo::NotMapped.

Member Function Documentation

◆ map()

MapData IMFSampleVideoBuffer::map ( QtVideo::MapMode mode )

inlineoverridevirtual

Maps the planes of a video buffer to memory.

Returns a \l MapData structure that contains information about the plane layout of the mapped current video data. If the mapping fails, the method returns the default structure. For CPU memory buffers, the data is considered as already mapped, so the function just returns the plane layout of the preallocated underlying data.

The map mode indicates whether the contents of the mapped memory should be read from and/or written to the buffer. If the map mode includes the QtVideo::MapMode::WriteOnly flag, the content of the possibly modified mapped memory is expected to be written back to the buffer when unmapped.

When access to the data is no longer needed, the \l unmap function is called to release the mapped memory and possibly update the buffer contents.

If the format of the video data is multiplanar, the method may map the whole pixel data as a single plane. In this case, mapping a buffer with \l QVideoFrame will calculate additional planes from the specified line stride of the first plane, the frame height, and the data size.

Implements QAbstractVideoBuffer.

Definition at line 48 of file evrd3dpresentengine.cpp.

References m_device, m_sample, mapData(), QtVideo::NotMapped, QtVideo::ReadOnly, and rect.

Here is the call graph for this function:

◆ unmap()

void IMFSampleVideoBuffer::unmap ( )

inlineoverridevirtual

Releases the memory mapped by the map() function.

If the \l {QtVideo::MapMode}{MapMode} included the QtVideo::MapMode::WriteOnly flag this will write the current content of the mapped memory back to the video frame.

For CPU video buffers, the function may be not overridden. The default implementation of unmap does nothing.

See also: map()

Reimplemented from QAbstractVideoBuffer.

Definition at line 95 of file evrd3dpresentengine.cpp.

References QtVideo::NotMapped.

Member Data Documentation

◆ m_device

ComPtr<IDirect3DDevice9Ex> IMFSampleVideoBuffer::m_device

protected

Definition at line 106 of file evrd3dpresentengine.cpp.

Referenced by map().

◆ m_sample

ComPtr<IMFSample> IMFSampleVideoBuffer::m_sample