1f3f22a709
The current API exposes an `ImmutableMap` of `TrackGroup` -> `TrackSelectionOverride`. This has several disadvantages: - A difficult to use API for mutation (`ImmutableMap.Builder` doesn't support key removal). - There is no track selection specific methods, how the generic map API mapps to the selection override is not complex but to obvious for a casual reader. - The internal data type is exposed, making internal refactor difficult. This was done to have the API ready as quick as possible. When transitioning the clients to the map API in <unknown commit>, it became clear that the map API was too verbose and not mapping to the clients needs, so utility methods were added to make operations clearer and more concise. Nevertheless, having to use utility method to use easily and correctly an API is not the sign of a good API. This cl refactors the track selection API for several improvements: - Add a type `TrackSelectionParameters` that encapsulate the internal data structure (map currently). - For iteration, expose as a list. - Add a `Builder` for easy mutable operations. - Add track selection specific methods to avoid having utilities functions. - Those operations are the same as `DefaultTrackSelector.Parameters` for easier migration. (`setOverride` was renamed to `addOverride`) - Move `TrackSelection` classes outside of `TrackSelectionParameters` as their own top level classes. The migration of the client code is straightforward as most of it were already using the previously mentioned utility functions that are now native methods. The full migration has not been done yet, and is pending on this cl approval. PiperOrigin-RevId: 405362719
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.