IMediaPosition::get_Rate

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Microsoft DirectShow 9.0

IMediaPosition::get_Rate

The get_Rate method retrieves the playback rate.

Syntax

  HRESULT get_Rate(
  double *pdRate
);

Parameters

pdRate

[out] Pointer to a variable that receives the playback rate.

Return Values

Returns an HRESULT value. Possible values include the following.

Return code Description
S_OK Success.
E_NOTIMPL Not implemented.
E_POINTER NULL pointer argument.

Remarks

The playback rate is expressed as a ratio of the normal speed. Thus, 1.0 is normal playback speed, 0.5 is half speed, and 2.0 is twice speed.

Requirements

Header: Declared in Control.h; include Dshow.h.

Library: Use Strmiids.lib.

See Also