ID3D11VideoDevice1.GetCryptoSessionPrivateDataSize

Undocumented in source but is binding to Windows. You might be able to learn more by searching the web for its name.
interface ID3D11VideoDevice1
extern (Windows)
HRESULT
GetCryptoSessionPrivateDataSize
(
const GUID* pCryptoType
,
const GUID* pDecoderProfile
,
const GUID* pKeyExchangeType
,,)

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