App Operations

This section lists and describes interfaces and enumerations that support specific operations for PlayReady-ND apps.

Closed Caption Acquisition

The following interface and enumeration support closed caption acquisition for content streaming.

Interface/Enumeration	Description
INDClosedCaptionDataReceivedEventArgs	Provides arguments for a PlayReady-ND ClosedCaptionDataReceived event.
NDClosedCaptionFormat	Indicates the format used for closed caption data that the client obtains.

The following interfaces and enumerations support communications between client receivers and transmitters in PlayReady-ND apps.

Interface/Enumeration	Description
INDDownloadEngineNotifier	Provides an object that notifies a client that data is available from the download engine.
INDSendResult	Provides a response message from a messenger object that gives the result of a PlayReady-ND operation.
INDStartResult	Provides a result message that contains the MediaStreamSource object that a client creates.
INDStreamParserNotifier	Provides a notifier object that a stream parser uses to notify a client that sample data is available.
NDMediaStreamType	Indicates a PlayReady-ND media stream type (audio or video).

The following interfaces provide plug-ins for basic operations of a PlayReady-ND app.

Interface	Description
INDDownloadEngine	Provides a PlayReady-ND download engine that streams content from a transmitter.
INDMessenger	Provides a PlayReady-ND messenger object that sends and receives registration, proximity detection, and license fetch messages.
INDStreamParser	Parses data from a PlayReady-ND media stream.