IAMBufferNegotiation::GetAllocatorProperties method (strmif.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetAllocatorProperties method retrieves the allocator properties that the pin is using.
Syntax
HRESULT GetAllocatorProperties(
[out] ALLOCATOR_PROPERTIES *pprop
);
Parameters
[out] pprop
Pointer to an ALLOCATOR_PROPERTIES structure, allocated by the caller, that receives the allocator properties.
Return value
Returns an HRESULT value. Possible values include the following.
| Return code | Description |
|---|---|
|
Success. |
|
NULL pointer argument. |
|
Pin is not connected. |
Remarks
Call this method after the pins connect, to find out the allocator properties that were chosen.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |