CBaseAllocator.GetFreeCount 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetFreeCount method retrieves the number of media samples that are not in use.
Syntax
HRESULT GetFreeCount(
LONG *plBuffersFree
);
Parameters
-
plBuffersFree
-
Address of a variable that receives the number of samples that are not in use.
Return value
Returns S_OK.
Remarks
This method implements the IMemAllocatorCallbackTemp::GetFreeCount method. The allocator does not expose the IMemAllocatorCallbackTemp interface unless the fEnableReleaseCallback flag is set to TRUE in the CBaseAllocator constructor.
Requirements
| Requirement | Value |
|---|---|
| Header |
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| Library |
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