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media/RELEASENOTES.md
ibaker 5370332fcc DASH: Stop interpreting main track role as SELECTION_FLAG_DEFAULT 
The `main` role distinguishes a track from an `alternate`, but unlike
`SELECTION_FLAG_DEFAULT` it doesn't imply the track should be selected
unless user preferences state otherwise. e.g. in the case of a text
track, the player shouldn't enable subtitle rendering just because a
`main` text track is present in the manifest.

The `main`/`alternate` distinction is still available through
`Format.roleFlags` and the `ROLE_FLAG_MAIN` and `ROLE_FLAG_ALTERNATE`
values.

This behaviour was originally [added in 2.2.0](7f967f3057),
however at the time the `C.RoleFlags` IntDef did not exist. The IntDef
was [added in 2.10.0](a86a9137be).

PiperOrigin-RevId: 418937747
2022-01-04 17:17:29 +00:00

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Release notes

1.0.0-alpha01

AndroidX Media is the new home for media support libraries, including ExoPlayer. The first alpha contains early, functional implementations of libraries for implementing media use cases, including:

  • ExoPlayer, an application-level media player for Android that is easy to customize and extend.
  • Media session functionality, for exposing and controlling playbacks. This new session module uses the same Player interface as ExoPlayer.
  • UI components for building media playback user interfaces.
  • Modules wrapping functionality in other libraries for use with ExoPlayer, for example, ad insertion via the IMA SDK.

ExoPlayer was previously hosted in a separate ExoPlayer GitHub project. In AndroidX Media its package name is androidx.media3.exoplayer. We plan to continue to maintain and release the ExoPlayer GitHub project for a while to give apps time to migrate. AndroidX Media has replacements for all the ExoPlayer modules, except for the legacy media2 and mediasession extensions, which are together replaced by the new media3-session module. This provides direct integration between players and media sessions without needing to use an adapter/connector class.