IMSVidStreamBufferSourceEvent2::RateChange Method

Article
2009-01-07

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.

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