#include <ImFusion/Stream/Stream.h>

Base class representing a stream of changing data in the DataModel. More...

Inheritance diagram for Stream:

Detailed Description

Base class representing a stream of changing data in the DataModel.

Streams are used to represent data that is continuously changing over time, such as video and ultrasound image streams, sensor data, or any other time-dependent data. They differ from other Data (especially TrackingSequence and SharedImageSet) in that they are not finite collections of data, but rather a continuous flow of data that can be processed in real-time.

The main way of consuming data from a Stream is by connecting to the signalStreamData signal, which is emitted whenever new data is available. For example, you can connect a slot to this signal to update a display widget with the latest data from the stream.

Note: For ImageStreams, the ImageStreamCache can be used when only occasional access to the latest data is needed. However, this is not intended for real-time processing.

The data emitted by the Stream must be a subclass of StreamData and depending on the type of Stream (see kind()), it is expected to emit different types of StreamData:

ImageStreams emit ImageStreamData, which contains images and their metadata.
TrackingStreams emit TrackingStreamData, which contains tracking information and metadata.

All Streams follow a state machine, where the states correspond to the lifecycle of the stream:

Closed: The stream is not open and not running.
Open: The stream is open and ready to be started, but not yet running.
Running: The stream is running and producing data.
Paused: The stream is paused and not producing data. The stream can be in one of these states at any time, and can transition between them, with corresponding intermediate states.

When implementing a Stream, you need to specify the desired threading mode as well as override the openImpl(), closeImpl(), startImpl(), and stopImpl() methods to perform the appropriate actions (e.g. open connection to a hardware device).

See also: Stream::threadingMode(); Stream::doWork(); Stream::workerThreadRequiresOpenGl()

Examples: ExampleStreams.cpp.

Classes
struct	StateChange

struct	WorkContinuation

Public Types
enum class	ThreadingMode { BaseClassRunsWorkerThread , DerivedClassHandlesThreading }
	This flag represents the two supported threading modes of a Stream. More...

enum class	State { Closed , Opening , Open , Starting , Running , Pausing , Paused , Resuming , Stopping , Closing }

Public Types inherited from Data
enum	Kind { UNKNOWN = 0 , IMAGE = 1 , VOLUME = 2 , IMAGESET = 3 , VOLUMESET = 4 , IMAGESTREAM = 5 , VOLUMESTREAM = 6 , POINTSET = 7 , SURFACE = 8 , TRACKINGSTREAM = 9 , LIVETRACKINGSTREAM = TRACKINGSTREAM , TRACKINGDATA = 10 , TREE = 11 , TENSOR = 12 , POLYDATASTREAM = 13 , STEREOIMAGESET = 14 , STEREOIMAGESTREAM = 15 , VOLUMETRICMESH = 16 }
	Kind of data. More...

enum	Modality { NA = 0 , XRAY = 1 , CT = 2 , MRI = 3 , ULTRASOUND = 4 , VIDEO = 5 , NM = 6 , OCT = 7 , LABEL = 8 , DISTANCE = 9 }
	Image modality of the data. More...

Public Member Functions
	Stream (const std::string &name="")
	Constructor with the `name` for this stream.

virtual ThreadingMode	threadingMode () const
	Configures threading mode of stream.

virtual bool	supportsAsyncOperation ()
	Returns true if xxxAsync() methods support execution in a background thread.

std::shared_future< bool >	openAsync ()
	Open stream in an asynchronous fashion (wait on the returned future before taking further actions). Returns whether the operation was successful.

std::shared_future< bool >	closeAsync ()
	Close stream in an asynchronous fashion (wait on the returned future before taking further actions). Returns whether the operation was successful.

std::shared_future< bool >	startAsync ()
	Start stream in an asynchronous fashion (wait on the returned future before taking further actions). Returns whether the operation was successful.

std::shared_future< bool >	stopAsync ()
	Stop stream in an asynchronous fashion (wait on the returned future before taking further actions). Returns whether the operation was successful.

std::shared_future< bool >	pauseAsync ()
	Pause stream in an asynchronous fashion (wait on the returned future before taking further actions). Returns whether the operation was successful.

std::shared_future< bool >	resumeAsync ()
	Resume stream in an asynchronous fashion (wait on the returned future before taking further actions). Returns whether the operation was successful.

bool	open ()
	Open stream and wait for the operation to complete. Returns whether the operation was successful.

bool	close ()
	Close stream and wait for the operation to complete. Returns whether the operation was successful.

bool	start ()
	Start stream and wait for the operation to complete. Returns whether the operation was successful.

bool	stop ()
	Stop stream and wait for the operation to complete. Returns whether the operation was successful.

bool	pause ()
	Pause stream and wait for the operation to complete. Returns whether the operation was successful.

bool	resume ()
	Resume stream and wait for the operation to complete. Returns whether the operation was successful.

virtual bool	supportsPausing () const
	Override and return true if this stream implements the pausing and resume operations.

bool	restart ()
	Stops, closes, opens and starts the stream. Returns whether the operation was successful.

virtual bool	reset ()
	Reverts stream to first frame, if possible. Returns whether the operation was successful.

virtual bool	isRunning () const
	Return whether stream is currently running.

virtual std::string	uuid ()=0
	Unique identifier for stream.

State	currentState () const

bool	isStateOneOf (const std::vector< State > &states) const

Geometry::AlignedBox	bounds () const override
	Per default a Stream has empty/invalid bounds.

Pose::TransformationConvention	matrixConvention () const override
	Matrices of streams by default map to the world coordinate system.

virtual bool	createDefaultStreamController ()
	Indicates whether a StreamController should be created for the stream (by default returns true).

double	updateRate () const
	Average update rate in Hz of the `signalStreamData`.

std::string	describe () const override
	Short description of the stream including latest state and update rate information.

Public Member Functions inherited from Data
	Data (const std::string &name="")

	Data (const Data &other)

Data &	operator= (const Data &other)

virtual	~Data ()
	Mandatory virtual destructor.

virtual Kind	kind () const =0
	Return the kind of this data.

virtual Modality	modality () const
	Return the modality of this data.

const std::string &	name () const
	Return the name of this data.

void	setName (const std::string &name)
	Sets the name of this data.

virtual bool	isAnnotationType () const
	Return whether this data type is visualized through an annotation (e.g. mesh)

const DataComponentList &	components () const
	Returns the list of DataComponents for this data.

DataComponentList &	components ()

virtual void	setMatrixFromWorld (const mat4 &m)
	Set matrix mapping from the world coordinate system to the data coordinate system.

virtual void	setMatrixToWorld (const mat4 &m)
	Set matrix mapping from the data coordinate system to the world coordinate system.

virtual mat4	matrixFromWorld () const
	Get matrix mapping from the world coordinate system to the data coordinate system.

virtual mat4	matrixToWorld () const
	Get matrix mapping from the data coordinate system to the world coordinate system.

virtual mat4	matrix () const
	Return the transformation matrix.

virtual void	setMatrix (const mat4 &m)
	Set the transformation matrix.

Public Member Functions inherited from Configurable
virtual void	configure (const Properties *p)
	Configure this object instance by de-serializing the given Properties.

virtual void	configuration (Properties *p) const
	Serialize the current object configuration into the given Properties object.

virtual void	configureDefaults ()
	Retrieve the properties of this object, replaces values with their defaults and sets it again.

void	registerParameter (ParameterBase *param)
	Register the given Parameter or SubProperty, so that it will be configured during configure()/configuration().

void	unregisterParameter (const ParameterBase *param)
	Remove the given Parameter or SubProperty from the list of registered parameters.

	Configurable (const Configurable &rhs)

	Configurable (Configurable &&rhs) noexcept

Configurable &	operator= (const Configurable &)

Configurable &	operator= (Configurable &&) noexcept

Static Public Member Functions
static std::string	stateToString (State state)

Static Public Member Functions inherited from Data
static std::string	modalityString (Data::Modality m)
	Return the name of an image modality.

static Data::Modality	stringToModality (const std::string &s)
	Returns the modality corresponding to a modality string or NA if nothing matches.

Public Attributes
ProtectedSignal< StateChange >	signalStateChanged
	Emitted after a state change has been completed with the old and new state.

ProtectedSignal	signalEnded
	Indicates that the stream reached the end of its data, e.g. when a video stream has played to the end.

ProtectedSignal< std::shared_ptr< const StreamData > >	signalStreamData
	Signal that is emitted by the stream when a new StreamData is available.

DeprecatedSignal< ProtectedSignal< std::shared_ptr< const StreamData > >, const StreamData & >	signalNewData
	Signal that is emitted by the stream when a new StreamData is available.

Public Attributes inherited from Data
Signal< const Data * >	signalDeleted
	Signal emitted when this instance is deleted.

Signal< const Data * >	signalMatrixChanged
	Signal emitted when the transformation of this Data has changed.

Signal< std::string >	signalNameChanged
	Signal emitted when the name changed.

Public Attributes inherited from Configurable
Signal	signalParametersChanged
	Emitted whenever one of the registered Parameters' or SubPropertys' `signalValueChanged` signal was emitted.

Protected Member Functions
virtual bool	openImpl ()=0
	Open stream.

virtual bool	closeImpl ()=0
	Close stream.

virtual bool	startImpl ()=0
	Start stream.

virtual bool	stopImpl ()=0
	Stop stream.

virtual bool	pauseImpl ()
	Pause stream (not required to be supported).

virtual bool	resumeImpl ()
	Resume stream from pause (only required to be supported when pauseImpl() is supported).

virtual bool	workerThreadRequiresOpenGl () const
	Override and return true if worker thread should create a GL::Context.

virtual std::optional< WorkContinuation >	doWork ()=0
	Create one StreamData and publish it (this function will be called at the desired frame rate) If this is not desired, you can do the following: return std::nullopt;.

virtual bool	worksWhilePaused () const
	Override if doWork() should be called also in the Paused state.

void	changeState (State newState)

std::shared_future< bool >	attemptStateChange (std::function< bool()> work, State stateWorking, State stateSuccess, State stateError)

Protected Member Functions inherited from Data
void	swapWith (Data &other)
	Swaps the data and emits a matrix and name changed signal for both.

Additional Inherited Members
Protected Attributes inherited from Data
mat4	m_matrix
	Transformation matrix.

std::recursive_mutex *	m_matrixMutex
	Used to internally synchronize access to the matrix of data.

DataComponentList	m_dataComponentList
	The list of DataComponents for this data.

Protected Attributes inherited from Configurable
std::vector< Param >	m_params
	List of all registered Parameter and SubProperty instances.

Member Enumeration Documentation

◆ ThreadingMode

enum class ThreadingMode

strong

This flag represents the two supported threading modes of a Stream.

Enumerator

BaseClassRunsWorkerThread

Stream starts thread upon open call and calls doWork in a loop when running.

State transition methods (openImpl, startImpl, etc.) are not immediately called upon (open/openAsync, start/startAsync, etc.), but added to a queue to be called on the worker thread.

DerivedClassHandlesThreading

Stream does not start any thread and never calls doWork.

State transition methods (openImpl, startImpl, etc.) are called on the same thread of the methods that calls (open/openAsync, start/startAsync, etc.). Therefore, the *Impl-methods need to be threadsafe.

Constructor & Destructor Documentation

◆ Stream()

Stream ( const std::string & name = "" )

explicit

Constructor with the name for this stream.

The name is passed to the Data constructor.

Member Function Documentation

◆ threadingMode()

virtual ThreadingMode threadingMode ( ) const

virtual

Configures threading mode of stream.

Returns ThreadingMode::BaseClassRunsWorkerThread by default. Override and return DerivedClassHandlesThreading if stream should not run a worker thread by its own. Overridden method must be constexpr-essible and thread-safe.

Reimplemented in CombinedTrackingStream, and VideoFileStream.

◆ supportsAsyncOperation()

virtual bool supportsAsyncOperation ( )

virtual

Returns true if xxxAsync() methods support execution in a background thread.

Deprecated: "Method is deprecated. Use `streamThreadingMode` instead"

◆ supportsPausing()

virtual bool supportsPausing ( ) const

inlinevirtual

Override and return true if this stream implements the pausing and resume operations.

Overridden method must be constexpr-essible and thread-safe.

Reimplemented in AlgorithmExecutorStream, FakeImageStream, GroupedStereoImageStream, OrbbecRGBDStream, PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, RemoteVideoStream, StereoImageStream, and VideoFileStream.

◆ reset()

virtual bool reset ( )

virtual

Reverts stream to first frame, if possible. Returns whether the operation was successful.

Reimplemented in PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, RGBDPlayback, ROSTopicRGBDStream, VideoCameraStream, and VideoFileStream.

◆ isRunning()

virtual bool isRunning ( ) const

inlinevirtual

Return whether stream is currently running.

Deprecated: "Check the Stream state instead"

Reimplemented in ROSTopicRGBDStream.

◆ uuid()

virtual std::string uuid ( )

pure virtual

Unique identifier for stream.

Implemented in AlgorithmExecutorStream, BasicProcessingStream, CombinedTrackingStream, FakeImageStream, FakePolyDataStream, FakeTrackingStream, GroupedStereoImageStream, Connection, IgtlImageStream, IgtlPolyDataStream, IgtlTrackingStream, KinectAzureStream, PixelwiseLearningStream, OpenNI2RGBDStream, OrbbecRGBDStream, OutStream, PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, PolarisAuroraTrackingStream< NDIType >, RealSenseStream, RemoteVideoStream, RGBDPlayback, FakeRobotControlStream, FrankaControlStream, KeyboardTrackingStream, RobotTrackingStream, URControlStream, URStateStream, MoveItControlStream, ROSTfTrackingStream, ROSTopicImageOutStream, ROSTopicImageStream, ROSTopicRGBDStream, ROSTopicTrackingOutStream, ROSTopicTrackingStream, SeekableTrackingStream, SmoothedTrackingStream, ProcessedUltrasoundStream, VideoCameraStream, and VideoFileStream.

◆ bounds()

Geometry::AlignedBox bounds ( ) const

overridevirtual

Per default a Stream has empty/invalid bounds.

Implements Data.

◆ matrixConvention()

Pose::TransformationConvention matrixConvention ( ) const

overridevirtual

Matrices of streams by default map to the world coordinate system.

Implements Data.

◆ createDefaultStreamController()

virtual bool createDefaultStreamController ( )

virtual

Indicates whether a StreamController should be created for the stream (by default returns true).

Override this method in your class derived from Stream, if you have a custom data controller for it, and you don't want the StreamController to be created in addition to your custom data controller

Reimplemented in RGBDStream.

◆ updateRate()

double updateRate ( ) const

Average update rate in Hz of the signalStreamData.

Value is reset to zero on pause and stop. Note: Value is not updated when there are no signal updates because it is a simple moving average of the last N events internally.

See also: StreamFPS

◆ describe()

std::string describe ( ) const

overridevirtual

Short description of the stream including latest state and update rate information.

Reimplemented from Data.

Reimplemented in TrackingStream, VideoCameraStream, and VideoFileStream.

◆ openImpl()

virtual bool openImpl ( )

protectedpure virtual

Open stream.

Returns whether the operation was successful. This method is responsible for allocating necessary resources, initializing device handles, and establishing connections to devices. Implementers should ensure that all one-time setup tasks are completed here.

Implemented in AlgorithmExecutorStream, BasicProcessingStream, CombinedTrackingStream, FakeImageStream, FakePolyDataStream, FakeTrackingStream, GroupedStereoImageStream, Connection, IgtlImageStream, IgtlPolyDataStream, IgtlTrackingStream, KinectAzureStream, PixelwiseLearningStream, OpenNI2RGBDStream, OrbbecRGBDStream, OutStream, PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, PolarisAuroraTrackingStream< NDIType >, RealSenseStream, RemoteVideoStream, RGBDPlayback, FakeRobotControlStream, FrankaControlStream, KeyboardTrackingStream, RobotTrackingStream, URControlStream, URStateStream, MoveItControlStream, ROSTfTrackingStream, ROSTopicImageOutStream, ROSTopicImageStream, ROSTopicRGBDStream, ROSTopicTrackingOutStream, ROSTopicTrackingStream, SmoothedTrackingStream, StereoImageStream, ProcessedUltrasoundStream, VideoCameraStreamOpenPnp, and VideoFileStream.

◆ closeImpl()

virtual bool closeImpl ( )

protectedpure virtual

Close stream.

Returns whether the operation was successful. This method should be used to free any resources that were allocated during the openImpl() call and to disconnect from any devices. Implementers must ensure that all resources are properly released to avoid memory leaks.

Implemented in AlgorithmExecutorStream, BasicProcessingStream, CombinedTrackingStream, FakeImageStream, FakePolyDataStream, FakeTrackingStream, GroupedStereoImageStream, Connection, IgtlImageStream, IgtlPolyDataStream, IgtlTrackingStream, KinectAzureStream, PixelwiseLearningStream, OpenNI2RGBDStream, OrbbecRGBDStream, OutStream, PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, PolarisAuroraTrackingStream< NDIType >, RealSenseStream, RemoteVideoStream, RGBDPlayback, FakeRobotControlStream, FrankaControlStream, KeyboardTrackingStream, RobotTrackingStream, URControlStream, URStateStream, MoveItControlStream, ROSTfTrackingStream, ROSTopicImageOutStream, ROSTopicImageStream, ROSTopicRGBDStream, ROSTopicTrackingOutStream, ROSTopicTrackingStream, SeekableStream< TrackingInstrument, TrackingStream >, SmoothedTrackingStream, StereoImageStream, ProcessedUltrasoundStream, VideoCameraStreamOpenPnp, and VideoStreamBackendOpenCV.

◆ startImpl()

virtual bool startImpl ( )

protectedpure virtual

Start stream.

Returns whether the operation was successful. This method is intended to initiate the actual data readout process or to connect a callback function for data handling. Implementers should ensure that the stream is ready and producing data after this call.

Implemented in AlgorithmExecutorStream, BasicProcessingStream, CombinedTrackingStream, FakeImageStream, FakePolyDataStream, FakeTrackingStream, GroupedStereoImageStream, Connection, IgtlImageStream, IgtlPolyDataStream, IgtlTrackingStream, KinectAzureStream, PixelwiseLearningStream, OpenNI2RGBDStream, OrbbecRGBDStream, OutStream, PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, PolarisAuroraTrackingStream< NDIType >, RealSenseStream, RemoteVideoStream, RGBDPlayback, FakeRobotControlStream, FrankaControlStream, KeyboardTrackingStream, RobotTrackingStream, URControlStream, URStateStream, MoveItControlStream, ROSTfTrackingStream, ROSTopicImageOutStream, ROSTopicImageStream, ROSTopicRGBDStream, ROSTopicTrackingOutStream, ROSTopicTrackingStream, SmoothedTrackingStream, StereoImageStream, ProcessedUltrasoundStream, VideoCameraStreamOpenPnp, VideoFileStream, and VideoStreamBackendOpenCV.

◆ stopImpl()

virtual bool stopImpl ( )

protectedpure virtual

Stop stream.

Returns whether the operation was successful. This method should halt any ongoing data readouts or callbacks, effectively pausing the data flow to reduce CPU load. Implementers should ensure that the stream can be restarted after this call.

Implemented in AlgorithmExecutorStream, BasicProcessingStream, CombinedTrackingStream, FakeImageStream, FakePolyDataStream, FakeTrackingStream, GroupedStereoImageStream, Connection, IgtlImageStream, IgtlPolyDataStream, IgtlTrackingStream, KinectAzureStream, PixelwiseLearningStream, OpenNI2RGBDStream, OrbbecRGBDStream, OutStream, PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, PolarisAuroraTrackingStream< NDIType >, RealSenseStream, RemoteVideoStream, RGBDPlayback, FakeRobotControlStream, FrankaControlStream, KeyboardTrackingStream, RobotTrackingStream, URControlStream, URStateStream, MoveItControlStream, ROSTfTrackingStream, ROSTopicImageOutStream, ROSTopicImageStream, ROSTopicRGBDStream, ROSTopicTrackingOutStream, ROSTopicTrackingStream, SeekableStream< TrackingInstrument, TrackingStream >, SmoothedTrackingStream, StereoImageStream, ProcessedUltrasoundStream, VideoCameraStreamOpenPnp, and VideoStreamBackendOpenCV.

◆ pauseImpl()

virtual bool pauseImpl ( )

inlineprotectedvirtual

Pause stream (not required to be supported).

Returns whether the operation was successful. This method is intended to temporarily pause data acquisition.

Reimplemented in AlgorithmExecutorStream, FakeImageStream, GroupedStereoImageStream, OrbbecRGBDStream, PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, RemoteVideoStream, SeekableStream< TrackingInstrument, TrackingStream >, StereoImageStream, and VideoFileStream.

◆ resumeImpl()

virtual bool resumeImpl ( )

inlineprotectedvirtual

Resume stream from pause (only required to be supported when pauseImpl() is supported).

Returns whether the operation was successful. This method should resume data acquisition after a pause.

Reimplemented in AlgorithmExecutorStream, FakeImageStream, GroupedStereoImageStream, OrbbecRGBDStream, PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, RemoteVideoStream, SeekableStream< TrackingInstrument, TrackingStream >, StereoImageStream, and VideoFileStream.

◆ workerThreadRequiresOpenGl()

virtual bool workerThreadRequiresOpenGl ( ) const

inlineprotectedvirtual

Override and return true if worker thread should create a GL::Context.

Only has an effect if base class runs worker thread (see threadingMode()). Overridden method must be constexpr-essible and thread-safe.

Reimplemented in ImageStream, PlaybackStereoImageStream, and PlaybackStream.

◆ doWork()

virtual std::optional< WorkContinuation > doWork ( )

protectedpure virtual

Create one StreamData and publish it (this function will be called at the desired frame rate) If this is not desired, you can do the following: return std::nullopt;.

Implemented in AlgorithmExecutorStream, BasicProcessingStream, CombinedTrackingStream, FakeImageStream, FakePolyDataStream, FakeTrackingStream, GroupedStereoImageStream, Connection, IgtlImageStream, IgtlPolyDataStream, IgtlTrackingStream, KinectAzureStream, PixelwiseLearningStream, OpenNI2RGBDStream, OrbbecRGBDStream, OutStream, PlaybackStereoImageStream, PlaybackStream, PlaybackTrackingStream, PolarisAuroraTrackingStream< NDIType >, RealSenseStream, RemoteVideoStream, RGBDPlayback, FakeRobotControlStream, FrankaControlStream, KeyboardTrackingStream, RobotTrackingStream, URControlStream, URStateStream, MoveItControlStream, ROSTfTrackingStream, ROSTopicImageStream, ROSTopicRGBDStream, ROSTopicTrackingStream, SmoothedTrackingStream, StereoImageStream, Substream< TrackingStream >, ProcessedUltrasoundStream, VideoCameraStreamOpenPnp, and VideoStreamBackendOpenCV.

◆ worksWhilePaused()

virtual bool worksWhilePaused ( ) const

inlineprotectedvirtual

Override if doWork() should be called also in the Paused state.

Only has an effect if base class runs worker thread (see threadingMode()).

Member Data Documentation

◆ signalStreamData

ProtectedSignal<std::shared_ptr<const StreamData> > signalStreamData

Signal that is emitted by the stream when a new StreamData is available.

On the emitting side, the stream must ensure that the StreamData is not modified / reused after it has been emitted.

Note: signalStreamData and the deprecated signalNewData are "linked", so if there is a connection to one of them, the receiver will be notified when either of the signals is emitted.

◆ signalNewData

DeprecatedSignal<ProtectedSignal<std::shared_ptr<const StreamData> >, const StreamData&> signalNewData

Signal that is emitted by the stream when a new StreamData is available.

Deprecated.

Note: signalStreamData and the deprecated signalNewData are "linked", so if there is a connection to one of them, the receiver will be notified when either of the signals is emitted.

Deprecated: "signalNewData is deprecated. Use signalStreamData instead"

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

ImFusion/Stream/Stream.h

Detailed Description

Classes

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Additional Inherited Members

Member Enumeration Documentation

◆ ThreadingMode

Constructor & Destructor Documentation

◆ Stream()

Member Function Documentation

◆ threadingMode()

◆ supportsAsyncOperation()

◆ supportsPausing()

◆ reset()

◆ isRunning()

◆ uuid()

◆ bounds()

◆ matrixConvention()

◆ createDefaultStreamController()

◆ updateRate()

◆ describe()

◆ openImpl()

◆ closeImpl()

◆ startImpl()

◆ stopImpl()

◆ pauseImpl()

◆ resumeImpl()

◆ workerThreadRequiresOpenGl()

◆ doWork()

◆ worksWhilePaused()

Member Data Documentation

◆ signalStreamData

◆ signalNewData