/// <summary>
/// Begins playing a song
/// </summary>
public void BeginPlaying(Song song)
{
//This lock is used to ensure that starting and stopping of songs do not happen at the same time.
lock (startStopSyncObject)
{
if (IsPlaying)
{
throw new InvalidOperationException("Audio is already playing.");
}
//Need to keep track of the playing song beyond this method
this.song = song;
//Get rid of any old playing notes left over from the last time a song was played
playingNotes.Clear();
//(60 secs/min * PLAYBACK_RATE samples/sec) / song.Tempo beats/min = samples/beat
samplesPerBeat = ((60 * PLAYBACK_RATE) / song.Tempo);
//To start playback we need some initial data
short[] beat0 = MixBeat(song.NotesAtBeat(0));
short[] beat1 = MixBeat(song.NotesAtBeat(1));
StartStreamingAudio(beat0, beat1);
//Beats 0 and 1 have already been generated, so the next beet to generate is 2
nextBeat = 2;
//Call the BeatStarted event, since playback has started
BeatStarted?.Invoke(0, true);
}
}
public void BeginPlaying(int bpm)
{
samplesPerBeat = ((60 * playbackRate) / bpm);
totalBeats = songDataReference.GetLength(0);
short[] beat0 = MixBeat(GetNotes(0));
short[] beat1 = MixBeat(GetNotes(1));
StartStreamingAudio(beat0);
AppendStreamingAudio(beat1);
nextBeat = 2;
BeatStarted?.Invoke(0, true);
}
