IMFSampleProtection::InitInputProtection method

Initializes sample protection on the downstream component.

Syntax


HRESULT InitInputProtection(
  [in] DWORD dwVersion,
  [in] DWORD dwInputId,
  [in] BYTE  *pbSeed,
  [in] DWORD cbSeed
);

dwVersion [in]: Specifies the version number of the sample protection scheme. The version number is specified as a SAMPLE_PROTECTION_VERSION enumeration value.
dwInputId [in]: Identifier of the input stream. The identifier corresponds to the output stream identifier returned by the IMFTransform interface.
pbSeed [in]: Pointer to a buffer that contains the initialization data provided by the upstream component. To retrieve this buffer, call IMFSampleProtection::InitOutputProtection.
cbSeed [in]: Size of the pbSeed buffer, in bytes.

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

Return code	Description
S_OK	The method succeeded.

Minimum supported client	Windows Vista [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2008 [desktop apps \| Windows Store apps]
Header	Mfidl.h
Library	Mfuuid.lib