IMediaFilter interface

The IMediaFilter interface controls the streaming state of a filter.

All DirectShow filters implement this interface. It provides methods for switching the filter between states (stopped, paused, and running); for retrieving the filter's current state; and for setting a reference clock. Applications should not call IMediaFilter methods on filters.

The Filter Graph Manager also exposes this interface. Applications can use the SetSyncSource method to set the graph reference clock, and GetSyncSource to retrieve the clock. Applications should not call the other methods on this interface. Instead, use the corresponding methods on the IMediaControl interface.

The IBaseFilter interface inherits from IMediaFilter.

Members

The IMediaFilter interface inherits from IPersist. IMediaFilter also has these types of members:

Methods

The IMediaFilter interface has these methods.

MethodDescription
GetState

Retrieves the state of the filter (running, stopped, or paused).

GetSyncSource

Retrieves the current reference clock.

Pause

Pauses the filter.

Run

Runs the filter.

SetSyncSource

Sets the reference clock for the filter or the filter graph.

Stop

Stops the filter.

 

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Strmif.h (include Dshow.h)

Library

Strmiids.lib

 

 

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