IDMOVideoOutputOptimizations::GetCurrentOperationMode method (mediaobj.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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetCurrentOperationMode method retrieves the optimization features in effect.

Syntax

HRESULT GetCurrentOperationMode(
  ULONG ulOutputStreamIndex,
  DWORD *pdwEnabledFeatures
);

Parameters

ulOutputStreamIndex

Zero-based index of an output stream on the DMO.

pdwEnabledFeatures

Pointer to a variable that receives the current features. The returned value is a bitwise combination of zero or more flags from the DMO_VIDEO_OUTPUT_STREAM_FLAGS enumeration.

Return value

Returns an HRESULT value. Possible values include those in the following table.

Return code	Description
DMO_E_INVALIDSTREAMINDEX	Invalid stream index
E_POINTER	NULL pointer argument
S_OK	Success

Requirements

Requirement	Value
Target Platform	Windows
Header	mediaobj.h (include Dmo.h)
Library	Dmoguids.lib

See also

IDMOVideoOutputOptimizations Interface