Microsoft DirectX 9.0

IAMExtendedSeeking Interface

The IAMExtendedSeeking interface provides methods for seeking to markers in a Windows Media stream and for modifying the playback speed. It is implemented on the Windows Media Source filter and the WM ASF Reader filter.

In addition to the methods inherited from IDispatch, the IAMExtendedSeeking interface exposes the following methods.

Method Description
get_CurrentMarker Retrieves the current marker.
get_ExSeekCapabilities Retrieves the extended seeking capabilities of the filter.
get_MarkerCount Retrieves the number of markers in the current stream.
get_PlaybackSpeed Retrieves the current playback speed.
GetMarkerName Retrieves the name associated with the specified marker.
GetMarkerTime Retrieves the presentation time associated with the specified marker.
put_PlaybackSpeed Sets the playback speed.


Requires Qnetwork.h. To define the interface identifier, include Initguid.h before Qnetwork.h, but after Dshow.h:

#include <dshow.h>
#include <initguid.h>
#include <qnetwork.h>

Make sure that Initguid.h is included only once in your project.