The mm-renderer service can report events so you can monitor and react to changes in playback activity, input and output attachments to a context, and any errors that might occur.

The event-processing support includes functions for arming the notification of an mm-renderer event, waiting until an event occurs, and retrieving information on the latest event. The event information is stored in the mmr_event_t data type and includes but is not limited to:

Using this API functionality, you can process events in an automated way without having to access and parse status files to keep up with the state of the mm-renderer service. You can instead write an event-processing loop to continuously monitor and react to events by storing the necessary data and performing follow-up actions.