IMFSampleAllocatorControl interface (mfidl.h)
Implemented by video capture sources and transforms. Allows the system to provide components with a sample allocator to allocate samples using memory that is accessible from within a container.
Inheritance
The IMFSampleAllocatorControl interface inherits from the IUnknown interface.
Methods
The IMFSampleAllocatorControl interface has these methods.
| IMFSampleAllocatorControl::GetAllocatorUsage Retrieves the sample allocator usage for the specified output stream. |
| IMFSampleAllocatorControl::SetDefaultAllocator Sets the default sample allocator to use for the specified output stream. |
Remarks
Components that do not implement this interface, or do not use the allocator provided by the system, can still allocate samples, but when running from inside a container, the system will have to copy all samples into container memory, which is less efficient.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10, version 2004 (10.0; Build 19041) |
| Minimum supported server | Windows Server, version 2004 (10.0; Build 19041) |
| Header | mfidl.h |
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