IMFDeviceTransform::GetInputStreamAttributes method (mftransform.h)

The GetInputStreamAttributes method gets the attribute store for an input stream on this Media Foundation transform (MFT).

Syntax

HRESULT GetInputStreamAttributes(
  [in]  DWORD         dwInputStreamID,
  [out] IMFAttributes **ppAttributes
);

[in] dwInputStreamID

Stream ID of the input stream whose state needs to be retrieved.

[out] ppAttributes

Receives a pointer to the IMFAttributes interface. The caller must release the interface.

The method returns an HRESULT. Possible values include but not limited to values given in the following table.

Return code	Description
S_OK	Transitioning the stream state succeeded.
MF_E_INVALIDREQUEST	Device MFT could not support the request at this time.
MF_E_INVALIDSTREAMNUMBER	The stream ID is not valid.

This method is used by DTM to get a specific input stream’s attribute store.