private static void WriteMidiTrack(MidiFileFormatWriter mffw, MidiTrack track)
{
// Write out track marker
mffw.WriteString(MidiFileFormat.midiTrackMarker, false);
// Run 2 passes, one to compute the length to be written, and one to actually write out the data
mffw.CountingMode = true;
mffw.ResetBytesWritten();
for (int pass = 0; pass < 2; pass++)
{
byte runningStatus = 0;
// Write out all events
for (LinkedListNode <MidiEvent> n = track.EventList.First; n != null; n = n.Next)
{
runningStatus = WriteMidiEvent(mffw, n.Value, runningStatus);
}
// At the end of the first pass, write out the count
if (pass == 0)
{
mffw.CountingMode = false;
uint count = mffw.BytesWritten;
mffw.WriteUInt32(count);
}
}
}
public static void WriteMidiFile(MidiSequence sequence, string filename)
{
MidiFileFormatWriter mffw = new MidiFileFormatWriter(filename);
using (mffw)
{
// Write magic number
mffw.WriteString(MidiFileFormat.midiFileMarker, false);
// Write header size
mffw.WriteUInt32(MidiFileFormat.midiFileHeaderLength);
// Write header
mffw.WriteUInt16(MidiFileFormat.midiFileVersion);
mffw.WriteUInt16((ushort)sequence.Tracks.Count);
mffw.WriteUInt16((ushort)((sequence.PPQN > 0) ? sequence.PPQN : (sequence.SMPTETempo | 0x8000)));
// Write out the tracks
for (int t = 0; t < sequence.Tracks.Count; t++)
{
WriteMidiTrack(mffw, sequence.Tracks[t]);
}
}
}
