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IMediaObject::GetStreamCount

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Microsoft DirectShow 9.0

IMediaObject::GetStreamCount

The GetStreamCount method retrieves the number of input and output streams.

Syntax

  HRESULT GetStreamCount(
    DWORD* pcInputStreams,
    DWORD* pcOutputStreams
);

Parameters

pcInputStreams

[out] Pointer to a variable that receives the number of input streams. Cannot be NULL.

pcOutputStreams

[out] Pointer to a variable that receives the number of output streams. Cannot be NULL.

Return Value

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

Return Code Description
E_POINTER NULL pointer argument
S_OK Success

Remarks

The DMO might have zero input streams or zero output streams. The number of streams does not change; a DMO cannot dynamically add or remove streams.

Requirements

  Header: Declared in Mediaobj.h; include Dmo.h
  Library: Dmoguids.lib.

See Also