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IMSVidStreamBufferSourceEvent2::RateChange

  • Artigo
 
Microsoft DirectShow 9.0

IMSVidStreamBufferSourceEvent2::RateChange

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 get_RateChange(
  
  double 
  qwNewRate
  ,

  
  double 
  qwOldRate
  
  );

Parameters

qwNewRate

[in]  Specifies the new playback rate.

qwOldRate

[in]  Specifies the previous playback rate.

Return Values

Returns an HRESULT value. Possible values include the following.

Value 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: Dshow.h.

  Library: Quartz.dll.

See Also