private static void PlayTrack(int trackIndex)
{
if (zeOutput == null)
{
zeOutput = OutputDevice.InstalledDevices[0];
zeOutput.Open();
/*
* zeOutput.SendProgramChange(Channel.Channel1, Instrument.Lead1Square);
* zeOutput.SendProgramChange(Channel.Channel2, Instrument.Lead1Square);
*/
}
Track track = mTrackLibrary.Tracks[trackIndex];
ChannelPlayState[] playState = new ChannelPlayState[track.Channels.Count];
for (int i = 0; i < playState.Length; i++)
{
playState[i] = new ChannelPlayState(i, track.Channels[i]);
}
mBPM = track.BPM;
mBarLength = 0.0;
Console.WriteLine("Playing {0} at {1} bpm", track.Name, track.BPM);
int lastTick = Environment.TickCount;
while (!playState.All(x => x.Finished))
{
int elapsedms = Environment.TickCount - lastTick;
lastTick = Environment.TickCount;
Array.ForEach(playState, x => x.WaitTime -= elapsedms);
Array.ForEach(playState, x => PlayNextNote(x));
}
System.Threading.Thread.Sleep(1000);
}
private static void PlayNextNote(ChannelPlayState playState)
{
if (playState.WaitTime > 0)
{
return;
}
zeOutput.SendNoteOff(Channel.Channel1 + playState.Index, NoteToPitch(playState.CurrentNote), 127);
if (playState.Finished)
{
return;
}
int noteseqindex = mTrackLibrary.GetNoteSequenceIndex(playState.Channel[playState.SequenceIndex]);
Note[] noteseq = mTrackLibrary.NoteSequences[noteseqindex];
Note note = noteseq[playState.NoteIndex];
if (playState.NoteIndex == 0 && playState.Index == 0)
{
if (mBarLength != 0.0)
{
Console.WriteLine();
}
Console.WriteLine("{0}:", mTrackLibrary.GetNoteSequenceKey(noteseqindex));
}
if (note.Key == Key.Rest)
{
if (playState.Index == 0)
{
Console.Write("~ ");
}
}
else
{
if (playState.Index == 0)
{
Console.Write("{0,2}{1} ", Note.GetStringFromKey(note.Key), note.Octave);
}
zeOutput.SendNoteOn(Channel.Channel1 + playState.Index, NoteToPitch(note), 127);
}
playState.WaitTime = GetNoteTime(mBPM, note);
playState.CurrentNote = note;
playState.NoteIndex++;
if (playState.NoteIndex >= noteseq.Length)
{
playState.SequenceIndex++;
playState.NoteIndex = 0;
if (playState.SequenceIndex >= playState.Channel.Length)
{
playState.Finished = true;
}
}
if (playState.Index == 0)
{
mBarLength += note.BarLength;
if (mBarLength >= 1.0)
{
Console.WriteLine();
mBarLength = 0.0;
}
}
}