C# Class DirectX.Capture.SourceCollection

A collection of sources (or physical connectors) on an audio or video device. This is used by the Capture class to provide a list of available sources on the currently selected audio and video devices. This class cannot be created directly. This class assumes there is only 1 video and 1 audio crossbar and all input pins route to a single output pin on each crossbar.

Inheritance: System.Collections.CollectionBase, IDisposable

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Private Properties

Property	Type	Description
SourceCollection	System
SourceCollection	System

Public Methods

Method	Description
Clear ( ) : void	Empty the collection.
Dispose ( ) : void	Release unmanaged resources.
addFromGraph ( ICaptureGraphBuilder2 graphBuilder, IBaseFilter deviceFilter, bool isVideoDevice ) : void	Populate the collection from a filter graph.
this ( int index ) : DirectX.Capture.Source	Get the source at the specified index.

Protected Methods

Method	Description
findAudioSources ( ICaptureGraphBuilder2 graphBuilder, IBaseFilter deviceFilter ) : ArrayList
findCrossbarSources ( ICaptureGraphBuilder2 graphBuilder, IAMCrossbar crossbar, bool isVideoDevice ) : ArrayList	Populate the internal InnerList with sources/physical connectors found on the crossbars. Each instance of this class is limited to video only or audio only sources ( specified by the isVideoDevice parameter on the constructor) so we check each source before adding it to the list.
findCrossbars ( ICaptureGraphBuilder2 graphBuilder, IBaseFilter deviceFilter ) : ArrayList	Retrieve a list of crossbar filters in the graph. Most hardware devices should have a maximum of 2 crossbars, one for video and another for audio.

Private Methods

Method	Description
SourceCollection ( ) : System	Initialize collection with no sources.
SourceCollection ( ICaptureGraphBuilder2 graphBuilder, IBaseFilter deviceFilter, bool isVideoDevice ) : System	Initialize collection with sources from graph.

Method Details

Clear() public method

Empty the collection.

public Clear ( ) : void
return	void

Dispose() public method

Release unmanaged resources.

public Dispose ( ) : void
return	void

addFromGraph() public method

Populate the collection from a filter graph.

public addFromGraph ( ICaptureGraphBuilder2 graphBuilder, IBaseFilter deviceFilter, bool isVideoDevice ) : void
graphBuilder	ICaptureGraphBuilder2
deviceFilter	IBaseFilter
isVideoDevice	bool
return	void

findAudioSources() protected method

protected findAudioSources ( ICaptureGraphBuilder2 graphBuilder, IBaseFilter deviceFilter ) : ArrayList
graphBuilder	ICaptureGraphBuilder2
deviceFilter	IBaseFilter
return	System.Collections.ArrayList

findCrossbarSources() protected method

Populate the internal InnerList with sources/physical connectors found on the crossbars. Each instance of this class is limited to video only or audio only sources ( specified by the isVideoDevice parameter on the constructor) so we check each source before adding it to the list.

protected findCrossbarSources ( ICaptureGraphBuilder2 graphBuilder, IAMCrossbar crossbar, bool isVideoDevice ) : ArrayList
graphBuilder	ICaptureGraphBuilder2
crossbar	IAMCrossbar
isVideoDevice	bool
return	System.Collections.ArrayList

findCrossbars() protected method

Retrieve a list of crossbar filters in the graph. Most hardware devices should have a maximum of 2 crossbars, one for video and another for audio.

protected findCrossbars ( ICaptureGraphBuilder2 graphBuilder, IBaseFilter deviceFilter ) : ArrayList
graphBuilder	ICaptureGraphBuilder2
deviceFilter	IBaseFilter
return	System.Collections.ArrayList

this() public method

Get the source at the specified index.

public this ( int index ) : DirectX.Capture.Source
index	int
return	DirectX.Capture.Source