CBaseAllocator.Commit method
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 memory for the buffers. This method implements the IMemAllocator::Commit method.
Syntax
HRESULT Commit();
Parameters
This method has no parameters.
Return value
Returns an HRESULT value. Possible values include those in the following list.
Return code | Description |
---|---|
|
Success. |
|
Buffer requirements were not specified. |
Remarks
Before calling this method, call the CBaseAllocator::SetProperties method to specify the buffer requirements.
This method calls the virtual method CBaseAllocator::Alloc to allocate the memory for the buffers. Derived classes can override Alloc. If a decommit operation is pending, it is canceled.
You must call this method before calling the CBaseAllocator::GetBuffer method.
Requirements
Requirement | Value |
---|---|
Header |
|
Library |
|