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IMFTransform::GetStreamCount method

Gets the current number of input and output streams on this Media Foundation transform (MFT).

Syntax

C++


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

Parameters

pcInputStreams [out]: Receives the number of input streams.
pcOutputStreams [out]: Receives the number of output streams.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

The number of streams includes unselected streams—that is, streams with no media type or a NULL media type.

This method should not be called with NULL parameters, although in practice some implementations may allow NULL parameters.

If MFT_UNIQUE_METHOD_NAMES is defined before including mftransform.h, this method is renamed MFTGetStreamCount. See Creating Hybrid DMO/MFT Objects.

Requirements

Minimum supported client	Windows Vista [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2008 [desktop apps \| Windows Store apps]
Header	Mftransform.h
Library	Mfuuid.lib