Detailed Description

SignalHandler class.

Users must implement the IActionProvider interface to create a signal handler. Signal handlers can only be attached to elements that supports certain signals.

A signal handler can handle multiple signals from a single element

Definition at line 40 of file signal_handler.hpp.

Inheritance diagram for deepstream::SignalHandler:

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Collaboration diagram for deepstream::SignalHandler:

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Data Structures
struct	Callback
	generic callback on the signal More...

class	IActionProvider
	required interface for a signal handler More...

Public Member Functions
	SignalHandler (const std::string &name, IActionProvider *provider)
	Constructor. More...

	SignalHandler (const std::string &name, const char factory, IActionProvider provider)
	Constructor. More...

virtual	~SignalHandler ()
	Destructor. More...

void *	getCallbackFn (const std::string &name) const
	Return the callback for a specific signal. More...

const std::string	getName () const
	Return the name assigned during the construction. More...

	operator bool () const noexcept
	Check if the object is void. More...

bool	operator== (const Object &other) noexcept
	Check if the two objects are the same. More...

GstObject *	give ()
	Give up the ownership and return the opaque pointer. More...

GstObject *	getGObject ()
	Return the opaque object pointer. More...

Object &	take (GstObject *object)
	Takes the ownership of a object through the opaque pointer. More...

Object &	seize (GstObject *object)
	Seize a opaque object to prevent it from being destroyed somewhere. More...

Object &	set (const YAML::Node &params)
	Set the properties from key/value pairs in the yaml format. More...

Object &	set (const std::string &name, const Value &value)

template<typename T , typename... Args>
Object &	set (const std::string &name, const T &value, const Args &... args)

template<typename T , typename... Args>
Object &	getProperty (const std::string &name, T &value, Args &... args)
	Template for getting multiple properties. More...

std::vector< std::string >	listSignals (bool is_action)
	List all the supported signals from the object. More...

bool	connectSignal (const std::string &signal_name, SignalHandler &handler)
	Connect a signal handler to the object. More...

void	emitSignal (const std::string &signal_name, va_list args)
	Emit a signal. More...

Static Public Member Functions
static unsigned long	type ()
	Return the type id assigned to signal handler. More...

Protected Member Functions
virtual void	set_ (const std::string &name, const Value &value)

virtual void	set_ (const std::string &name, const YAML::Node &value)

virtual Value	get_ (const std::string &name)

Protected Attributes
std::unique_ptr< IActionProvider >	provider_

std::string	param_spec_
	property spec in YAML format More...

std::map< std::string, Object::Value >	properties_
	property map More...

GstObject *	object_

Constructor & Destructor Documentation

◆ SignalHandler() [1/2]

deepstream::SignalHandler::SignalHandler	(	const std::string &	name,
		IActionProvider *	provider
	)

Constructor.

Create a signal handler with a user implemented action provider interface

Parameters

[in]	name	name of the instance
[in]	handler	implementation of the IActionProvider interface

◆ SignalHandler() [2/2]

deepstream::SignalHandler::SignalHandler	(	const std::string &	name,
		const char *	factory,
		IActionProvider *	provider
	)

Constructor.

Create a signal handler with a user implemented action provider interface

Parameters

[in]	name	name of the instance
[in]	factory	name of the factory who creates the instance
[in]	handler	implementation of the IActionProvider interface

◆ ~SignalHandler()

virtual deepstream::SignalHandler::~SignalHandler ( )

virtual

Destructor.

Member Function Documentation

◆ connectSignal()

bool deepstream::Object::connectSignal	(	const std::string &	signal_name,
		SignalHandler &	handler
	)

inherited

Connect a signal handler to the object.

Parameters

[in]	signal_name	name of the signal to be connected
[in]	handler	handler for the signal

◆ emitSignal()

void deepstream::Object::emitSignal	(	const std::string &	signal_name,
		va_list	args
	)

inherited

Emit a signal.

◆ get_()

virtual Value deepstream::CustomObject::get_ ( const std::string & name )

protectedvirtualinherited

Reimplemented from deepstream::Object.

◆ getCallbackFn()

void* deepstream::SignalHandler::getCallbackFn ( const std::string & name ) const

Return the callback for a specific signal.

◆ getGObject()

GstObject* deepstream::Object::getGObject ( )

inlineinherited

Return the opaque object pointer.

Definition at line 140 of file object.hpp.

References deepstream::Object::object_.

◆ getName()

const std::string deepstream::Object::getName ( ) const

inherited

Return the name assigned during the construction.

◆ getProperty()

template<typename T , typename... Args>

Object& deepstream::Object::getProperty	(	const std::string &	name,
		T &	value,
		Args &...	args
	)

inlineinherited

Template for getting multiple properties.

Definition at line 171 of file object.hpp.

References deepstream::Object::get_().

Referenced by deepstream::CountMarker::handleData(), deepstream::TensorMetaParser::handleData(), deepstream::MsgMetaGenerator::handleData(), deepstream::NvDsKittiDump::handleData(), deepstream::LiDARDataSource::initialize(), deepstream::SmartRecordingAction::onAttached(), and deepstream::FileDataSource::read().

◆ give()

GstObject* deepstream::Object::give ( )

inherited

Give up the ownership and return the opaque pointer.

◆ listSignals()

std::vector<std::string> deepstream::Object::listSignals ( bool is_action )

inherited

List all the supported signals from the object.

◆ operator bool()

deepstream::Object::operator bool ( ) const

inlineexplicitnoexceptinherited

Check if the object is void.

Definition at line 131 of file object.hpp.

References deepstream::Object::object_.

◆ operator==()

bool deepstream::Object::operator== ( const Object & other )

inlinenoexceptinherited

Check if the two objects are the same.

Definition at line 134 of file object.hpp.

References deepstream::Object::object_.

◆ seize()

Object& deepstream::Object::seize ( GstObject * object )

inherited

Seize a opaque object to prevent it from being destroyed somewhere.

◆ set() [1/3]

template<typename T , typename... Args>

Object& deepstream::Object::set	(	const std::string &	name,
		const T &	value,
		const Args &...	args
	)

inlineinherited

Definition at line 161 of file object.hpp.

References deepstream::Object::set(), and deepstream::Object::set_().

◆ set() [2/3]

Object& deepstream::Object::set	(	const std::string &	name,
		const Value &	value
	)

inlineinherited

Definition at line 154 of file object.hpp.

References deepstream::Object::set_().

◆ set() [3/3]

Object& deepstream::Object::set ( const YAML::Node & params )

inherited

Set the properties from key/value pairs in the yaml format.

Referenced by deepstream::Pipeline::add(), and deepstream::Object::set().

◆ set_() [1/2]

virtual void deepstream::CustomObject::set_	(	const std::string &	name,
		const Value &	value
	)

protectedvirtualinherited

Reimplemented from deepstream::Object.

◆ set_() [2/2]

virtual void deepstream::CustomObject::set_	(	const std::string &	name,
		const YAML::Node &	value
	)

protectedvirtualinherited

Reimplemented from deepstream::Object.

◆ take()

Object& deepstream::Object::take ( GstObject * object )

inherited

Takes the ownership of a object through the opaque pointer.

◆ type()

static unsigned long deepstream::SignalHandler::type ( )

static

Return the type id assigned to signal handler.

Field Documentation

◆ object_

GstObject* deepstream::Object::object_

protectedinherited

Definition at line 198 of file object.hpp.

Referenced by deepstream::Object::getGObject(), deepstream::Object::operator bool(), and deepstream::Object::operator==().

◆ param_spec_

std::string deepstream::CustomObject::param_spec_

protectedinherited

property spec in YAML format

Definition at line 51 of file custom_object.hpp.

◆ properties_

std::map<std::string, Object::Value> deepstream::CustomObject::properties_

protectedinherited

property map

Definition at line 53 of file custom_object.hpp.

◆ provider_

std::unique_ptr<IActionProvider> deepstream::SignalHandler::provider_

protected

Definition at line 91 of file signal_handler.hpp.

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

signal_handler.hpp

NVIDIA DeepStream SDK API Reference

8.0 Release

Detailed Description

Data Structures

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Constructor & Destructor Documentation

◆ SignalHandler() [1/2]

◆ SignalHandler() [2/2]

◆ ~SignalHandler()

Member Function Documentation

◆ connectSignal()

◆ emitSignal()

◆ get_()

◆ getCallbackFn()

◆ getGObject()

◆ getName()

◆ getProperty()

◆ give()

◆ listSignals()

◆ operator bool()

◆ operator==()

◆ seize()

◆ set() [1/3]

◆ set() [2/3]

◆ set() [3/3]

◆ set_() [1/2]

◆ set_() [2/2]

◆ take()

◆ type()

Field Documentation

◆ object_

◆ param_spec_

◆ properties_

◆ provider_