package com.example.heartrateadjuster; /** * Interface to the Audio System. */ public interface IAudioSystem { /** * Sets the heart rate to be targeted by the system. * @param target The new target */ public void setTargetHeartRate(int target); /** * Skips the current track, begins playback of next. */ public void skipTrack(); /** * Toggles between playing and not playing. */ public void togglePlayback(); /** * Gets currently playing track. * @return The title of the currently playing track. */ public String getNowPlaying(); }