99086b4007
The library already maintains the subscribed controllers internally. This change adds `MediaLibrarySession.getSubscribedControllers(mediaId)` to access subscribed controllers for a given media ID. To accept a subscription, `MediaLibraryService.Callback.onSubscribe` is required to return `RESULT_SUCCESS`. So far, this isn't the case for the default implementation of the library. This change implements `Callback.onSubscribe` to conditionally provide `RESULT_SUCCESS`. The default calls `Callback.onGetItem(mediaId)` to assess the availability of the media item. If the app retruns `RESULT_SUCCESS` with a browsable item, the subscription is accepted. If receiving a valid item fails, the subscription is rejected. Issue: androidx/media#561 PiperOrigin-RevId: 568925079
Session module
This module provides media session functionality through which media information and controls can be exposed to the Android platform, as well as to other processes and applications.
Getting the module
The easiest way to get the module is to add it as a gradle dependency:
implementation 'androidx.media3:media3-session:1.X.X'
where 1.X.X is the version, which must match the version of the other media
modules being used.
Alternatively, you can clone this GitHub project and depend on the module locally. Instructions for doing this can be found in the top level README.