/// <summary>
/// Sets playback position to the specified time from the beginning of the MIDI data.
/// </summary>
/// <param name="time">Time from the beginning of the MIDI data to set playback position to.</param>
/// <exception cref="ArgumentNullException"><paramref name="time"/> is null.</exception>
/// <exception cref="ObjectDisposedException">The current <see cref="Playback"/> is disposed.</exception>
/// <exception cref="MidiDeviceException">An error occurred on device.</exception>
public void MoveToTime(ITimeSpan time)
{
ThrowIfArgument.IsNull(nameof(time), time);
EnsureIsNotDisposed();
if (TimeConverter.ConvertFrom(time, TempoMap) > _durationInTicks)
{
time = (MetricTimeSpan)_duration;
}
var isRunning = IsRunning;
_clock.Reset();
SetStartTime(time);
if (isRunning)
{
StopStartNotes();
_clock.Start();
}
}
private void OnClockTick(object sender, TickEventArgs e)
{
var time = e.Time;
do
{
var timedEvent = _eventsEnumerator.Current;
if (timedEvent == null)
{
continue;
}
if (timedEvent.Time > time)
{
return;
}
var midiEvent = timedEvent.Event;
if (!IsRunning)
{
return;
}
OutputDevice.SendEvent(midiEvent);
var noteOnEvent = midiEvent as NoteOnEvent;
if (noteOnEvent != null)
{
_noteOnEvents[noteOnEvent.GetNoteId()] = noteOnEvent;
}
var noteOffEvent = midiEvent as NoteOffEvent;
if (noteOffEvent != null)
{
_noteOnEvents.Remove(noteOffEvent.GetNoteId());
}
}while (_eventsEnumerator.MoveNext());
if (!Loop)
{
_clock.Stop();
OnFinished();
return;
}
_clock.StopInternalTimer();
_clock.Reset();
_eventsEnumerator.Reset();
_eventsEnumerator.MoveNext();
_clock.StartInternalTimer();
}
private void OnClockTicked(object sender, TickedEventArgs e)
{
var time = e.Time;
do
{
var playbackEvent = _eventsEnumerator.Current;
if (playbackEvent == null)
{
continue;
}
if (playbackEvent.Time > time)
{
return;
}
var midiEvent = playbackEvent.Event;
if (midiEvent == null)
{
continue;
}
if (!IsRunning)
{
return;
}
Note note;
if (TryPlayNoteEvent(playbackEvent, out note))
{
if (note != null)
{
if (playbackEvent.Event is NoteOnEvent)
{
OnNotesPlaybackStarted(note);
}
else
{
OnNotesPlaybackFinished(note);
}
}
continue;
}
var eventCallback = EventCallback;
if (eventCallback != null)
{
midiEvent = eventCallback(midiEvent.Clone(), playbackEvent.RawTime, time);
}
if (midiEvent == null)
{
continue;
}
SendEvent(midiEvent);
}while (_eventsEnumerator.MoveNext());
if (!Loop)
{
_clock.Stop();
OnFinished();
return;
}
_clock.Stop();
_clock.Reset();
_eventsEnumerator.Reset();
_eventsEnumerator.MoveNext();
_clock.Start();
}