IWMReaderAdvanced::GetAllocateForStream method (wmsdkidl.h)

[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 It has been superseded by Source Reader and Sink Writer.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 GetAllocateForStream method ascertains whether the reader is configured to use IWMReaderCallbackAdvanced to allocate stream samples delivered by the IWMReaderCallbackAdvanced::OnStreamSample callback.

Syntax

HRESULT GetAllocateForStream(
  [in]  WORD dwSreamNum,
  [out] BOOL *pfAllocate
);

Parameters

[in] dwSreamNum

WORD containing the stream number.

[out] pfAllocate

Pointer to a Boolean value that is set to True if the reader uses IWMReaderCallbackAdvanced to allocate samples.

Return value

If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.

Remarks

Stream numbers are in the range of 1 through 63.

Requirements

See also

IWMReaderAdvanced Interface

IWMReaderAdvanced::SetAllocateForStream