go/src/sample/speaker.vdl

package sample

// Speaker allows clients to control the music being played.
type Speaker interface {
 // Play starts or continues the current song.
 Play() (error)
 // PlaySong plays back the given song title, if possible.
 PlaySong(songName string) (error)
 // PlayStream plays the given stream of music data.
 PlayStream() stream<[]byte, _> (error)
 // GetSong retrieves the title of the Speaker's current song, if any.
 GetSong() (string, error)
 // Pause playback of the Speaker's current song.
 Pause() (error)
 // Stop playback of the Speaker's current song.
 Stop() (error)
 // Volume adjusts the Speaker's volume.
 Volume(volumeLevel uint16) (error)
 // GetVolume retrieves the Speaker's volume.
 GetVolume() (uint16, error)
 // AddSongs adds the list of given songs to the song library.
 AddSongs(songs []string) (error)
 // RemoveSongs removes the list of given songs from the song library.
 RemoveSongs(songs []string) (error)
}