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ImFusion SDK 4.3
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ImFusion SDK 4.3
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#include <ImFusion/Stream/VideoStreamBackendOpenCV.h>
Backend for OpenCV based video streams Virtual base class that handles most of the functionality of an OpenCV based stream. More...
Inheritance diagram for VideoStreamBackendOpenCV:Backend for OpenCV based video streams Virtual base class that handles most of the functionality of an OpenCV based stream.
Mainly exists to avoid duplicate code between streams from file and CV based camera streams. Does not have an open method, because those 2 modes open differently.
Public Member Functions | |
| bool | closeImpl () override |
| Stops and closes the stream, freeing the resource. | |
| bool | startImpl () override |
| Starts streaming on an already opened resource. | |
| bool | stopImpl () override |
| Stops the stream, but keeps hold of the resource. | |
| Public Member Functions inherited from ImageStream | |
| ImageStream (const std::string &name="") | |
| Data::Kind | kind () const override final |
| Returns the kind (typically IMAGESTREAM or VOLUMESTREAM) | |
| void | setModality (Modality m) |
| Set the modality descriptor of this stream. | |
| Modality | modality () const override final |
| Return the modality of this stream. | |
| virtual bool | topDown () const |
| Specify whether the first line of the image data is to be displayed on top. | |
| int | size () const override |
| Returns the number of images of the image stream per emission. | |
| std::string | describe () const override |
| Short description of the stream including latest state and update rate information. | |
| Public Member Functions inherited from Stream | |
| 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. | |
| 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 |
| Public Member Functions inherited from Selectable | |
| Selectable (const Selectable &) | |
| Selectable (Selectable &&) | |
| Selectable & | operator= (const Selectable &) |
| Selectable & | operator= (Selectable &&) |
| virtual Selection | selection () const |
| virtual int | focus () const |
| virtual void | setSelection (const Selection &sel) |
| Set the underlying selection. | |
| virtual void | setFocus (int index) |
| Set focus of the selection. | |
Protected Member Functions | |
| bool | readImage (TypedImage< unsigned char > *out, double &deviceTime, std::chrono::system_clock::time_point &arrivalTime) |
| Reads a single frame, returns false if the reading fails. | |
| virtual void | captureThread ()=0 |
| Code executed by the thread which keeps reading frames from the stream. | |
| std::optional< WorkContinuation > | doWork () override |
| 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;. | |
| Protected Member Functions inherited from ImageStream | |
| void | setKind (Kind k) |
| Sets the kind (typically IMAGESTREAM or VOLUMESTREAM) and emits signalKindChanged. | |
| bool | workerThreadRequiresOpenGl () const override |
| Ensure the thread has an GL context before the main loop starts. | |
| Protected Member Functions inherited from Stream | |
| virtual bool | openImpl ()=0 |
| Open 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 | 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. | |
| Protected Member Functions inherited from NotCopyable | |
| NotCopyable (NotCopyable &&) noexcept=default | |
| NotCopyable & | operator= (NotCopyable &&) noexcept=default |
| NotCopyable (const NotCopyable &)=delete | |
| NotCopyable & | operator= (const NotCopyable &)=delete |
Protected Attributes | |
| std::thread * | m_captureThread |
| CPU thread for reading frames. | |
| cv::VideoCapture * | m_capture |
| OpenCV object which does the actual reading. | |
| std::recursive_mutex | m_stoppingMutex |
| 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. | |
| Protected Attributes inherited from Selectable | |
| std::mutex | m_selectionMutex |
| Mutex protecting the selection. | |
| Selection | m_sel |
Additional Inherited Members | |
| Public Types inherited from Stream | |
| 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... | |
| Static Public Member Functions inherited from Stream | |
| 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 inherited from ImageStream | |
| Signal< Data::Kind > | signalKindChanged |
| Is emitted when the stream changes between IMAGESTREAM and VOLUMESTREAM, before the next ImageStreamData is emitted. | |
| Public Attributes inherited from Stream | |
| 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. | |
| Public Attributes inherited from Selectable | |
| ProtectedSignal | signalSelectionChanged |
| Signals that the selection or size might have changed. | |
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overridevirtual |
Stops and closes the stream, freeing the resource.
Implements Stream.
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overridevirtual |
Starts streaming on an already opened resource.
Implements Stream.
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overridevirtual |
Stops the stream, but keeps hold of the resource.
Implements Stream.
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protected |
Reads a single frame, returns false if the reading fails.
\ param deviceTime will be set to timestamp provided by the device. Will be 0.0 if device does not support timestamp. \ param arrivalTime will be set to the time of image arrival
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inlineoverrideprotectedvirtual |
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;.
Implements Stream.
