
TracksInfo is very similar to `MappingTrackSelector.MappedTracksInfo` with some fields removed to simplify the Player API, notably it doesn't expose the renderer concept. A significant difference is the addition of a `selected` boolean field which avoids having a separate `getCurrentTrackSelection` API. This cl is a part of the bigger track selection change, splitted for ease of review. In particular, the MediaSession implementation and UI usage have been slitted in child cls. Find all cls with the tag: #player-track-selection PiperOrigin-RevId: 400937124
ExoPlayer library
The ExoPlayer library is split into multiple modules. See ExoPlayer's top level README for more information about the available library modules and how to use them.