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IMFInputTrustAuthority interface

Enables other components in the protected media path (PMP) to use the input protection system provided by an input trust authorities (ITA). An ITA is a component that implements an input protection system for media content. ITAs expose the IMFInputTrustAuthority interface.

An ITA translates policy from the content's native format into a common format that is used by other PMP components. It also provides a decrypter, if one is needed to decrypt the stream.

The topology contains one ITA instance for every protected stream in the media source. The ITA is obtained from the media source by calling IMFTrustedInput::GetInputTrustAuthority.

Members

The IMFInputTrustAuthority interface inherits from the IUnknown interface. IMFInputTrustAuthority also has these types of members:

Methods

The IMFInputTrustAuthority interface has these methods.

MethodDescription
BindAccess

Notifies the ITA that a requested action is about to be performed.

GetDecrypter

Retrieves a decrypter transform.

GetPolicy

Retrieves the policy that defines which output protection systems are allowed for this stream, and the configuration data for each protection system.

RequestAccess

Requests permission to perform a specified action on the stream.

Reset

Resets the ITA to its initial state.

UpdateAccess

Notifies the ITA when the number of output trust authorities (OTAs) that will perform a specified action has changed.

 

Requirements

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

See also

Media Foundation Interfaces

 

 

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