cv::dnn::BackendWrapper Class Reference

Derivatives of this class wraps cv::Mat for different backends and targets. More...

#include <opencv2/dnn/dnn.hpp>

Collaboration diagram for cv::dnn::BackendWrapper:

Public Member Functions
	BackendWrapper (const Ptr< BackendWrapper > &base, const MatShape &shape)
	Make wrapper for reused cv::Mat.
	BackendWrapper (int backendId, int targetId)
	BackendWrapper (int targetId, const cv::Mat &m)
	Wrap cv::Mat for specific backend and target.
virtual	~BackendWrapper ()
	Virtual destructor to make polymorphism.
virtual void	copyToHost ()=0
	Transfer data to CPU host memory.
int	getHostMatDepth ()
virtual void	setHostDirty ()=0
	Indicate that an actual data is on CPU.

Public Attributes
int	backendId
	Backend identifier.
int	targetId
	Target identifier.

Protected Attributes
int	hostMatDepth = -1

Detailed Description

Derivatives of this class wraps cv::Mat for different backends and targets.

Constructor & Destructor Documentation

BackendWrapper() [1/3]

cv::dnn::BackendWrapper::BackendWrapper	(	int	backendId,
		int	targetId )

BackendWrapper() [2/3]

cv::dnn::BackendWrapper::BackendWrapper	(	int	targetId,
		const cv::Mat &	m )

Wrap cv::Mat for specific backend and target.

Parameters

[in]	targetId	Target identifier.
[in]	m	cv::Mat for wrapping.

Make CPU->GPU data transfer if it's require for the target.

BackendWrapper() [3/3]

cv::dnn::BackendWrapper::BackendWrapper	(	const Ptr< BackendWrapper > &	base,
		const MatShape &	shape )

Make wrapper for reused cv::Mat.

Parameters

[in]	base	Wrapper of cv::Mat that will be reused.
[in]	shape	Specific shape.

Initialize wrapper from another one. It'll wrap the same host CPU memory and mustn't allocate memory on device(i.e. GPU). It might has different shape. Use in case of CPU memory reusing for reuse associated memory on device too.

~BackendWrapper()

virtual cv::dnn::BackendWrapper::~BackendWrapper ( )

virtual

Virtual destructor to make polymorphism.

Member Function Documentation

copyToHost()

virtual void cv::dnn::BackendWrapper::copyToHost ( )

pure virtual

Transfer data to CPU host memory.

getHostMatDepth()

int cv::dnn::BackendWrapper::getHostMatDepth ( )

inline

setHostDirty()

virtual void cv::dnn::BackendWrapper::setHostDirty ( )

pure virtual

Indicate that an actual data is on CPU.

Member Data Documentation

backendId

int cv::dnn::BackendWrapper::backendId

Backend identifier.

hostMatDepth

int cv::dnn::BackendWrapper::hostMatDepth = -1

protected

targetId

int cv::dnn::BackendWrapper::targetId

Target identifier.

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

• opencv2/dnn/dnn.hpp