IAMVideoDecimationProperties::QueryDecimationUsage method (strmif.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The QueryDecimationUsage method retrieves the current decimation strategy.
Syntax
HRESULT QueryDecimationUsage(
[out] DECIMATION_USAGE *lpUsage
);
Parameters
[out] lpUsage
Pointer to a variable of type DECIMATION_USAGE that receives the decimation setting.
Return value
Returns an HRESULT value that depends on the implementation of the interface. The DirectShow implementation returns S_OK if successful, or E_FAIL or another error code otherwise.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |