private void TypeTextBox_TextChanged(object sender, TextChangedEventArgs e)
{
this.ValidateNumericInput(this.TypeLabel, ref this._Type, 0, sbyte.MaxValue);
this.TypeTextBlock.Text = (this.Type < 0) ? null : MidiMetaEvent.GetTypeComment(this.Type);
this.DataLength = MidiMetaEvent.GetDataLength(this.Type);
this.DataCommentTextBox.IsReadOnly = (this.DataLength >= 0);
this.UpdateDataComment();
}
private static string DescribeNumber(int type, byte[] bytes)
{
int n = MidiMetaEvent.GetDataLength(type);
if (bytes.Length < n)
{
return(null);
}
return(Midi.ReadNumber(bytes, 0, n).ToString());
}
private static string DescribeTimeSignature(byte[] bytes)
{
int n = MidiMetaEvent.GetDataLength(MidiMetaEvent.TimeSignatureType);
if (bytes.Length < n)
{
return(null);
}
return(string.Format("{0}/{1} {2}, {3} {4}, {5} {6}", bytes[0], Math.Pow(2, bytes[1]), Properties.Resources.Time,
bytes[2], Properties.Resources.ClocksPerClick, bytes[3], Properties.Resources.NotesPerQuarterNote));
}
private static string DescribeTempo(byte[] bytes)
{
int n = MidiMetaEvent.GetDataLength(MidiMetaEvent.SetTempoType);
if (bytes.Length < n)
{
return(null);
}
n = Midi.ReadNumber(bytes, 0, n);
return(string.Format("{0} {1} ({2} {3})", n, Properties.Resources.MicrosecondsPerQuarterNote,
(n == 0) ? double.PositiveInfinity : (60000000 / n), Properties.Resources.BeatsPerMinute));
}
private static string DescribeKeySignature(byte[] bytes)
{
int n = MidiMetaEvent.GetDataLength(MidiMetaEvent.KeySignatureType);
if (bytes.Length < n)
{
return(null);
}
MidiKeySignature k = MidiMetaEvent.DataToKeySignature(bytes);
return((k == MidiKeySignature.NA) ? null :
k.ToString().Replace("Flat", "b").Replace("Sharp", "#").Replace("Major", " major").Replace("Minor", " minor"));
}
private static string DescribeSmpteOffset(byte[] bytes)
{
int n = MidiMetaEvent.GetDataLength(MidiMetaEvent.SmpteOffsetType);
if (bytes.Length < n)
{
return(null);
}
string s = string.Empty;
foreach (byte b in bytes)
{
if (s.Length > 0)
{
s += (s.Length > 9) ? "." : ":";
}
s += b.ToString("00");
}
return(s);
}