| Microsoft DirectX 9.0 |
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. |
Requirements
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.