IWMReaderAdvanced::GetMaxStreamSampleSize 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 It has been superseded by Source Reader and Sink Writer.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 GetMaxStreamSampleSize method retrieves the maximum buffer size to be allocated for stream samples for a specified media stream.

Syntax

HRESULT GetMaxStreamSampleSize(
  [in]  WORD  wStream,
  [out] DWORD *pcbMax
);

Parameters

[in] wStream

Stream number.

[out] pcbMax

Pointer to the maximum buffer size to be allocated.

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.
ASF_E_INVALIDSTATE
No file open for stream sample.
E_INVALIDARG
wStream specifies the wrong stream or pcbMax is a NULL pointer.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only],Windows Media Format 7 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)

See also

IWMReaderAdvanced Interface

IWMReaderAdvanced::GetAllocateForStream

IWMReaderAdvanced::GetMaxOutputSampleSize