IMemAllocator::Commit method (strmif.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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 Commit method allocates the buffer memory.

Syntax

HRESULT Commit();

Return value

Returns an HRESULT value. Possible values include those shown in the following table.

Return code Description
S_OK
Success.
E_OUTOFMEMORY
Insufficient memory.
VFW_E_SIZENOTSET
Buffer requirements were not set.

Remarks

Before calling this method, call the IMemAllocator::SetProperties method to specify the buffer requirements.

You must call this method before calling the IMemAllocator::GetBuffer method.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IMemAllocator Interface