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MFBeginUnregisterWorkQueueWithMMCSS function

Unregisters a work queue from a Multimedia Class Scheduler Service (MMCSS) task.

Syntax


HRESULT MFBeginUnregisterWorkQueueWithMMCSS(
  _In_  DWORD dwWorkQueueId,
  _In_  IMFAsyncCallback *pDoneCallback,
  _In_  IUnknown *pDoneState
);

Parameters

dwWorkQueueId [in]

The identifier of the work queue. For private work queues, the identifier is returned by the MFAllocateWorkQueue function. For platform work queues, see Work Queue Identifiers.

pDoneCallback [in]

Pointer to the IMFAsyncCallback interface of a callback object. The caller must implement this interface.

pDoneState [in]

Pointer to the IUnknown interface of a state object, defined by the caller. This parameter can be NULL. You can use this object to hold state information. The object is returned to the caller when the callback is invoked.

Return value

The function returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return codeDescription
S_OK

The function succeeded.

 

Remarks

This function unregisters a work queue that was associated with an MMCSS class through the MFBeginRegisterWorkQueueWithMMCSS function.

This function is asynchronous. When the operation completes, the callback object's IMFAsyncCallback::Invoke method is called. At that point, the application should call MFEndUnregisterWorkQueueWithMMCSS to complete the asynchronous request.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Mfapi.h

Library

Mfplat.lib

DLL

Mfplat.dll

See also

Media Foundation Functions
Work Queues

 

 

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