IWMSyncReader::GetStreamNumberForOutput method (wmsdkidl.h)

Artigo
4/26/2023

[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The GetStreamNumberForOutput method retrieves the stream number that corresponds with the specified output.

Syntax

HRESULT GetStreamNumberForOutput(
  [in]  DWORD dwOutputNum,
  [out] WORD  *pwStreamNum
);

Parameters

[in] dwOutputNum

DWORD value specifying the output number for which you want to retrieve a stream number.

[out] pwStreamNum

Pointer to a WORD value that receives the stream number that corresponds to the output specified by dwOutput.

Return value

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

Return code	Description
S_OK	The method succeeded.
NS_E_INVALID_REQUEST	dwOutput specifies an invalid output number.

Remarks

In the case of outputs that equate to mutual exclusions, only the active stream number is retrieved. If you need to get all of the stream numbers associated with such an output, you must access the profile information for the file.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only],Windows Media Format 9 Series SDK, or later versions of the SDK
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	wmsdkidl.h (include Wmsdk.h)
Library	Wmvcore.lib; WMStubDRM.lib (if you use DRM)

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