IMultiMediaStream::GetInformation method (mmstream.h)

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[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]

Note  This interface is deprecated. New applications should not use it.
 
The GetInformation method retrieves the capabilities of the multimedia stream object.

Syntax

HRESULT GetInformation(
  [out] DWORD       *pdwFlags,
  [out] STREAM_TYPE *pStreamType
);

Parameters

[out] pdwFlags

Pointer to a variable that receives a bitwise combination of the following flags.

Value Description
MMSSF_ASYNCHRONOUS The object supports asynchronous sample updates. This flag is always returned.
MMSSF_HASCLOCK The object has a clock.
MMSSF_SUPPORTSEEK The object supports seeking.
 

This parameter can be NULL.

[out] pStreamType

Pointer to a variable that receives a member of the STREAM_TYPE enumeration. This value indicates whether the multimedia stream is read-only, write-only, or read/write. This parameter can be NULL.

Return value

Returns an HRESULT value. Possible values include the following.

Return code Description
E_UNEXPECTED
 Unexpected error.
S_OK
 Success.

Requirements

Requirement Value
Target Platform Windows
Header mmstream.h

See also

IMultiMediaStream Interface