IAMDevMemoryControl::GetDevId 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Syntax
HRESULT GetDevId(
[out] DWORD *pdwDevId
);
Parameters
[out] pdwDevId
Pointer to the device ID.
Return value
Returns an HRESULT value that depends on the implementation of the interface.
Remarks
This method retrieves a unique ID that the hardware filter can use to verify that the specified allocator passed uses its on-board memory (because there can be more than one). The ID will be the same one as used to create the allocator object (using CoCreateInstance). For another filter to be able to use the on-board memory, it must have the same device ID as the on-board memory allocator.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |