IMSVidStreamBufferSourceEvent2::RateChange Method
This topic applies to Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005.
The RateChange method is called when the playback rate changes.
Syntax
HRESULT RateChange(
[in] double qwNewRate,
[in] double qwOldRate
);
Parameters
qwNewRate [in]
Specifies the new playback rate.qwOldRate [in]
Specifies the previous playback rate.
Return Value
Returns an HRESULT value. Possible values include the following.
| Return code | Description |
|---|---|
S_OK |
Success. |
Remarks
For both parameters, 1.0 represents normal speed. Fractional values are allowed. For example, 0.2 would represent a rate that is slower than normal playback and 1.7 would represent a rate that is faster than normal playback.
Requirements
| Header | Declared in Dshow.h. |
| DLL | Requires Quartz.dll. |
See Also
IMSVidStreamBufferSourceEvent2 Interface
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Build date: 12/4/2008