CTransformOutputPin Class

Microsoft DirectShow 9.0

CTransformOutputPin Class

The CTransformOutputPin class implements an output pin that is used by the CTransformFilter class.

Typically, you do not need to derive from this class. Most of the methods in this class call corresponding methods on the CTransformFilter class, which you can override. If you derive from this class, you must override the filter's CTransformFilter::GetPin method to create instances of your derived class.

This class exposes the IMediaSeeking and IMediaPosition interfaces through the CPosPassThru object. It passes all seek requests to the next filter upstream.

Requirements

**  Header:** Declared in Transfrm.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

Protected Member Variables
m_pTransformFilter	Pointer to the owning filter.
Public Member Variables
m_pPosition	Helper object to pass seek commands upstream.
Public Methods
CTransformOutputPin	Constructor method.
~CTransformOutputPin	Destructor method.
CheckConnect	Determines whether a pin connection is suitable.
BreakConnect	Releases the pin from a connection.
CompleteConnect	Completes a connection to another pin.
CheckMediaType	Determines if the pin accepts a specific media type.
SetMediaType	Sets the media type for the connection.
DecideBufferSize	Sets the buffer requirements.
GetMediaType	Retrieves a preferred media type, by index value.
CurrentMediaType	Retrieves the media type for the current pin connection.
IPin Methods
QueryId	Retrieves an identifier for the pin.
IQualityControl Methods
Notify	Notifies the pin that a quality change is requested.