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[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 InitAllocator method creates a memory allocator.
Syntax
virtual HRESULT InitAllocator(
IMemAllocator **ppAlloc
);
Parameters
-
ppAlloc
-
Address of a variable that receives a pointer to the allocator's IMemAllocator interface.
Return value
Returns S_OK if successful, or an error code from the CoCreateInstance function.
Remarks
If the input pin does not provide a memory allocator, the CBaseOutputPin::DecideAllocator method calls this method to create an allocator.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|