IMFDeviceTransform::GetStreamCount method (mftransform.h)

  • Article

The GetStreamCount method gets the current number of input and output streams on this Media Foundation transform (MFT).

Syntax

HRESULT GetStreamCount(
  [out] DWORD *pcInputStreams,
  [out] DWORD *pcOutputStreams
);

Parameters

[out] pcInputStreams

Receives the number of input streams.

[out] pcOutputStreams

Receives the number of output streams.

Return value

The method returns an HRESULT. Possible values include, but are not limited to the values given in the following table.

Return code Description
S_OK
 Transitioning the stream state succeeded.
E_POINTER
 Invalid pointer passed.

Remarks

This function is used by DTM to get the number of streams supported by the Device MFT. The number of streams include unselected streams., fore example, streams with no media type or a NULL media type.

This method would not be called with NULL parameters.

Requirements

Requirement Value
Minimum supported client Windows 10, version 1703
Target Platform Windows
Header mftransform.h

See also

IMFDeviceTransform