IWMReaderAdvanced::SetAllocateForStream 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 It has been superseded by Source Reader and Sink Writer.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 SetAllocateForStream method specifies whether the reader uses IWMReaderCallbackAdvanced::AllocateForStream to allocate buffers for stream samples.

Syntax

HRESULT SetAllocateForStream(
  [in] WORD wStreamNum,
  [in] BOOL fAllocate
);

Parameters

[in] wStreamNum

WORD containing the stream number. Stream numbers are in the range of 1 through 63.

[in] fAllocate

Boolean value that is True if the reader uses IWMReaderCallbackAdvanced to allocate streams.

Return value

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

Remarks

If the application's callback implements the IWMReaderAllocatorEx interface, the AllocateForStreamEx method is called instead of AllocateForStream.

Requirements

See also

IWMReaderAdvanced Interface

IWMReaderAdvanced::GetAllocateForStream

IWMReaderAllocatorEx::AllocateForStreamEx