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IMediaBuffer::SetLength

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Microsoft DirectShow 9.0

IMediaBuffer::SetLength

The SetLength method specifies the length of the data currently in the buffer.

Syntax

  HRESULT SetLength(
   DWORD cbLength
);

Parameters

cbLength

Size of the data, in bytes. The value must not exceed the buffer's maximum size. Call the IMediaBuffer::GetMaxLength method to obtain the maximum size.

Return Value

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

Remarks

This method sets the size of the valid data currently in the buffer, not the buffer's allocated size.

Requirements

  Header: Declared in Mediaobj.h; include Dmo.h
  Library: Dmoguids.lib.

See Also