IAMFilterData::ParseFilterData 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Note
This interface has been deprecated. New applications should not use it.
The ParseFilterData method unpacks the binary registry data for a filter.
There is typically no reason for an application to call this method. The IFilterMapper2::EnumMatchingFilters method provides a more convenient way to access the filter registry data.
Syntax
HRESULT ParseFilterData(
[in] BYTE *rgbFilterData,
[in] ULONG cb,
[out] BYTE **prgbRegFilter2
);
Parameters
-
rgbFilterData [in]
-
Pointer to the binary registry data. You can get this data by retrieving the "FilterData" property from the filter moniker. The data is stored as a SAFEARRAY of bytes (VT_UI1 | VT_ARRAY).
-
cb [in]
-
Specifies the size of the binary data, in bytes.
-
prgbRegFilter2 [out]
-
Address of a variable that receives a pointer to the unpacked data. When the method returns, cast this pointer to a REGFILTER2 type to access the filter data. The caller must release the memory by calling the CoTaskMemFree method.
Return value
If the method succeeds, it returns S_OK. If it fails, it returns an error code.
Remarks
Note
The header Fil_data.h is located in the Mapper Sample directory in the Windows SDK.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| DLL |
|
See also