IMediaPosition::get_Rate
| 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