b05583f00d
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
Test data module
Provides sample data for media unit and instrumentation tests.