CTransInPlaceFilter Class
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This is an abstract base class that provides support for a simple transform filter with a single input and a single output. It is derived from the CUnknown class, and supports the IBaseFilter interface, the IMediaFilter interface, and two pins. Each pin supports the IPin interface and uses the shared memory transport based on the IMemInputPin interface. The filter uses classes derived from the CBaseMediaFilter class to support IBaseFilter and IMediaFilter. The input pin is derived from the CBaseInputPin class, and the output pin is derived from the CBaseOutputPin class.
Protected Data Members
| Member | Description |
|---|---|
| m_idTransInPlace | Performance-measuring identifier. |
Member Functions
| Member function | Description |
|---|---|
| Copy | Retrieves a pointer to an identical copy of a media sample. |
| CTransInPlaceFilter | Constructs a CTransInPlaceFilter object. |
| InputPin | Retrieves a pointer to the input pin associated with the filter. |
| OutputPin | Retrieves a pointer to the output pin associated with the filter. |
Overrideable Member Functions
| Member function | Description |
|---|---|
| CheckTransform | Verifies that the media type is supported by input and output pins. |
| CompleteConnect | Reconnects the input or output pin if necessary. |
| DecideBufferSize | Determines the size of the transport buffer. |
| GetMediaType | Returns the media type to be used by the output pin. |
| GetPin | Returns a pin if an index is specified. |
| Receive | Receives the sample, calls the derived class's Transform member function, and then delivers the sample. |
| RegisterPerfId | Registers a performance measurement identifier (if PERF is defined). |
| Transform | Performs transformation operations in place on the IMediaSample interface (pure virtual). |
Requirements
DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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Last updated on Wednesday, April 13, 2005
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