CTransformInputPin Class (Compact 2013)

Article
01/31/2017

3/26/2014

CTransformInputPin Class

This class implements the input pin of a simple transform filter. It is the class assigned to the m_pInput data member of the CTransformFilter class.

Typically, you can create objects derived from CTransformFilter without modifying the CTransformInputPin class. That is, you can usually override the member functions in CTransformFilter that are called by member functions of this class. You need not derive your own classes for either of the pin classes.

However, to override this class and have your filter class derived from CTransformFilter, override the CTransformFilter::GetPin member function to create pins of your derived class.

Protected Data Members

Member	Description
m_pTransformFilter	Pointer to the owning CTransformFilter object.

Member Functions

Member function	Description
CTransformInputPin	Constructs a CTransformInputPin object.
CurrentMediaType	Retrieves the media type currently assigned to the filter.

Overrideable Member Functions

Member function	Description
BreakConnect	Informs the derived class when the connection is broken.
CheckConnect	Informs the derived class when the connection process is starting.
CheckMediaType	Determines if the pin can use a specified media type.
CheckStreaming	Verifies conditions for continuing with a streaming operation.
CompleteConnect	Informs the derived class when the connection process has completed.
SetMediaType	Informs the derived class when the media type is established for the connection.

Implemented IPin Methods

Method	Description
BeginFlush	Informs the pin to begin a flush operation.
EndFlush	Informs the pin to end a flush operation and notifies the pin that it can start accepting data again.
EndOfStream	Informs the input pin that no additional data is expected until a new run command is issued.
NewSegment	Specifies that samples following this call are grouped as a segment with a given start time, stop time, and rate.
QueryId	Retrieves an identifier for the pin.

Implemented IMemInputPin Methods

Method	Description
Receive	Receives the next block of data from the stream.

Requirements

Header	dshow.h, Streams.h
Library	ole32.lib, Ole32auth.lib, Strmbase.lib, Strmiids.lib, uuid.lib

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