public Score(int measureCount, Dictionary <int, TimeSignature> timeSignatures, Dictionary <int, int> tempoChanges,
IReadOnlyCollection <InstrumentTrack> instrumentTracks, PercussionTrack percussionTrack)
{
_measureCount = measureCount;
_timeSignatures = timeSignatures;
_tempoChanges = tempoChanges;
ValidateInitial(_timeSignatures, "time signature");
ValidateInitial(_tempoChanges, "tempo");
if (instrumentTracks.Count > 15)
{
throw new Exception("Too many instruments. MIDI is limited to 16 channels: 15 instrument and 1 percussion.");
}
_instrumentTracks = instrumentTracks;
_percussionTrack = percussionTrack;
foreach (var instrumentTrack in _instrumentTracks)
{
ValidateInstrumentTrackLength(instrumentTrack, _measureCount);
}
ValidatePercussionTrackLength(_percussionTrack, _measureCount);
}
private static void ValidatePercussionTrackLength(PercussionTrack track, int length)
{
if (track == null)
{
throw new ArgumentNullException("track");
}
if (track.Notes.Count != length)
{
throw new ArgumentException(string.Format("Percussion track must be {0} measures long.", length));
}
}