protected bool OpenFile()
{
try {
if (P.F.MidiFileBuffer == null) //read file from disk
{
if (!File.Exists(P.F.Project.MidiPath))
{
MessageBox.Show("Midifile " + P.F.Project.MidiPath + " not found");
return(false);
}
FileStream stfile = new FileStream(P.F.Project.MidiPath, FileMode.Open, FileAccess.Read, FileShare.Read);
//BinaryReader brfile = new BinaryReader(stfile);
int len = (int)stfile.Length;
P.F.MidiFileBuffer = new byte[len];
stfile.Read(P.F.MidiFileBuffer, 0, len);
}
MemoryStream stmem = new MemoryStream(P.F.MidiFileBuffer, false);
BinaryReader brmem = new BinaryReader(stmem);
MReaderFile = new clsMReader(brmem, stmem);
return(true);
}
catch (Exception exc) {
MessageBox.Show("Error loading Midifile: " + exc.Message);
return(false);
}
//catch (FileNotFoundException ex) {
// MessageBox.Show("Midifile Open Error: " + ex.Message);
// return false;
//}
//catch (DirectoryNotFoundException ex) {
// MessageBox.Show("Midifile Open Error: " + ex.Message);
// return false;
//}
}
protected void InitTrack()
{
string head = MReaderFile.ReadStr(4);
if (head != "MTrk")
{
MessageBox.Show("Unexpected Track Header: " + head);
throw new MidiFileException();
}
int trklen = (int)MReaderFile.ReadUIntF(4);
Stream sttrk = new MemoryStream(trklen);
byte[] trkbytes = MReaderFile.ReadBytes(trklen);
if (trkbytes.Length < trklen)
{
MessageBox.Show("Invalid trk length");
throw new MidiFileException();
}
sttrk.Write(trkbytes, 0, trklen);
sttrk.Seek(0, SeekOrigin.Begin);
BinaryReader brtrk = new BinaryReader(sttrk);
MReaderTrk = new clsMReader(brtrk, sttrk);
}