private string ToMBT(MidiEvent midiEvent, int ticksPerBeat, List <TimeSignatureChange> timeSignatures)
{
TimeSignatureChange latestTimeSig = FindLatestTimeSig(midiEvent.AbsoluteTime, timeSignatures);
long relativeTime = midiEvent.AbsoluteTime - latestTimeSig.AbsoluteTime;
long measure = (relativeTime / (ticksPerBeat * latestTimeSig.BeatsPerMeasure)) + latestTimeSig.StartMeasureNumber;
long beat = ((relativeTime / ticksPerBeat) % latestTimeSig.BeatsPerMeasure) + 1;
long tick = relativeTime % ticksPerBeat;
return(String.Format("{0}:{1}:{2}", measure, beat, tick));
}
private TimeSignatureChange FindLatestTimeSig(long absoluteTime, List <TimeSignatureChange> timeSignatures)
{
TimeSignatureChange latestChange = null;
foreach (TimeSignatureChange change in timeSignatures)
{
if (absoluteTime >= change.AbsoluteTime)
{
latestChange = change;
}
else
{
break;
}
}
if (latestChange != null)
{
latestChange = new TimeSignatureChange(0, 4, 1);
}
return(latestChange);
}
private TimeSignatureChange FindLatestTimeSig(long absoluteTime, List<TimeSignatureChange> timeSignatures)
{
TimeSignatureChange latestChange = null;
foreach (TimeSignatureChange change in timeSignatures)
{
if (absoluteTime >= change.AbsoluteTime)
latestChange = change;
else
break;
}
if (latestChange != null)
{
latestChange = new TimeSignatureChange(0, 4, 1);
}
return latestChange;
}
