IMFVideoPositionMapper interface
Maps a position on an input video stream to the corresponding position on an output video stream.
To obtain a pointer to this interface, call IMFGetService::GetService on the renderer with the service GUID MR_VIDEO_RENDER_SERVICE.
When to implement
Optionally, implement this interface if you write a custom mixer or presenter for the enhanced video renderer (EVR).
When to use
Use this interface to determine where a point in the video window lies relative to a substream within the video. For example, you can calculate whether a mouse click occurs within a particular substream.
Members
The IMFVideoPositionMapper interface inherits from the IUnknown interface. IMFVideoPositionMapper also has these types of members:
Methods
The IMFVideoPositionMapper interface has these methods.
| Method | Description |
|---|---|
| MapOutputCoordinateToInputStream |
Maps output image coordinates to input image coordinates. |
Requirements
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Minimum supported client |
Windows Vista [desktop apps only] |
|---|---|
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Minimum supported server |
Windows Server 2008 [desktop apps only] |
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See also