/// <summary>
/// Loads a MIDI file into the Sequence.
/// </summary>
/// <param name="fileName">
/// The MIDI file's name.
/// </param>
public void Load(string fileName)
{
#region Require
if (disposed)
{
throw new ObjectDisposedException("Sequence");
}
else if (IsBusy)
{
throw new InvalidOperationException();
}
else if (fileName == null)
{
throw new ArgumentNullException("fileName");
}
#endregion
FileStream stream = new FileStream(fileName, FileMode.Open,
FileAccess.Read, FileShare.Read);
using (stream)
{
MidiFileProperties newProperties = new MidiFileProperties();
TrackReader reader = new TrackReader();
List <Track> newTracks = new List <Track>();
newProperties.Read(stream);
for (int i = 0; i < newProperties.TrackCount; i++)
{
reader.Read(stream, i);
newTracks.Add(reader.Track);
if (timeSignatureNumerator == -1)
{
timeSignatureNumerator = reader.TimeSignatureNumerator;
}
if (timeSignatureDenominator == -1)
{
timeSignatureDenominator = reader.TimeSignatureDenominator;
}
}
properties = newProperties;
tracks = newTracks;
}
#region Ensure
Debug.Assert(Count == properties.TrackCount);
#endregion
}
private void LoadDoWork(object sender, DoWorkEventArgs e)
{
string fileName = (string)e.Argument;
FileStream stream = new FileStream(fileName, FileMode.Open,
FileAccess.Read, FileShare.Read);
using (stream)
{
MidiFileProperties newProperties = new MidiFileProperties();
TrackReader reader = new TrackReader();
List <Track> newTracks = new List <Track>();
newProperties.Read(stream);
float percentage;
for (int i = 0; i < newProperties.TrackCount && !loadWorker.CancellationPending; i++)
{
reader.Read(stream, i);
newTracks.Add(reader.Track);
if (timeSignatureNumerator == -1)
{
timeSignatureNumerator = reader.TimeSignatureNumerator;
}
if (timeSignatureDenominator == -1)
{
timeSignatureDenominator = reader.TimeSignatureDenominator;
}
percentage = (i + 1f) / newProperties.TrackCount;
loadWorker.ReportProgress((int)(100 * percentage));
}
if (loadWorker.CancellationPending)
{
e.Cancel = true;
}
else
{
properties = newProperties;
tracks = newTracks;
}
}
}
