public MidiFileChunk(MidiFileChunk copyFrom)
{
header = new MidiFileChunkHeader();
header.ID = copyFrom.Header.ID;
header.Length = copyFrom.Header.Length;
this.data = new byte[copyFrom.Data.Length];
Array.Copy(copyFrom.Data,data,copyFrom.Data.Length);
checkChunk();
}
public MidiFileChunkMTrk(MidiFileChunk copyFrom) : base(copyFrom)
{
parseData();
}
public void Load(string fileName)
{
MidiFileChunk tempChunk = new MidiFileChunk();
BinaryReader reader = new BinaryReader(File.Open(fileName, FileMode.Open));
chunkMThd = null;
string fileHeader = new string(reader.ReadChars(4));
if (fileHeader == "RIFF") {
reader.ReadBytes(8); // if it's a RIFF we skip the first 4+8 bytes
} else {
reader.BaseStream.Seek(0,SeekOrigin.Begin); // else we don't skip
}
while (reader.BaseStream.Position<=reader.BaseStream.Length-6) {
tempChunk.Read(reader);
//showMsg("Chunk ID: \""+tempChunk.Header.ID+"\" Length: "+tempChunk.Header.Length);
if (tempChunk.Header.ID == "MThd") {
chunkMThd = new MidiFileChunkMThd(tempChunk);
break;
}
}
if (chunkMThd == null) {
showMsg("Error: MIDI MThd chunk not found in MIDI file");
} else {
while (reader.BaseStream.Position<=reader.BaseStream.Length-6) {
tempChunk.Read(reader);
//showMsg("Chunk ID: \""+tempChunk.Header.ID+"\" Length: "+tempChunk.Header.Length);
if (tempChunk.Header.ID == "MTrk") {
chunkMTrk.Add(new MidiFileChunkMTrk(tempChunk));
}
}
if (chunkMTrk.Count != chunkMThd.NumTracks) {
showMsg("Warning: wrong number of tracks in MIDI file");
}
}
/*
reader.Close();
MidiFileChunkMTrk mtrk = (MidiFileChunkMTrk)chunkMTrk[2];
showMsg(""+mtrk.MidiEvents.Count);
*/
}
public MidiFileChunkMThd(MidiFileChunk copyFrom) : base(copyFrom)
{ }
