IMediaBuffer::GetMaxLength method (mediaobj.h)

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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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

The GetMaxLength method retrieves the maximum number of bytes this buffer can hold.

Syntax

HRESULT GetMaxLength(
  [out] DWORD *pcbMaxLength
);

Parameters

[out] pcbMaxLength

Pointer to a variable that receives the buffer's maximum size, in bytes.

Return value

Returns S_OK if successful. Otherwise, returns an HRESULT value indicating the cause of the error.

Requirements

Requirement Value
Target Platform Windows
Header mediaobj.h (include Dmo.h)
Library Dmoguids.lib

See also

IMediaBuffer Interface

Implementing IMediaBuffer