MIDIHeader ParseHeader(FileStream inFile)
{
MIDIHeader header = new MIDIHeader();
// MThd
{
byte[] _mthd = new byte[4];
inFile.Read(_mthd, 0, 4);
Array.Reverse(_mthd);
header.MThd = BitConverter.ToUInt32(_mthd, 0);
if (header.MThd != (UInt32)MIDI_EVENT_TYPES.HEADER_CHUNK_ID)
{
throw new Exception("wrong midi header");
}
}
//header length;
{
byte[] _length = new byte[4];
inFile.Read(_length, 0, 4);
Array.Reverse(_length);
header.header_length = BitConverter.ToUInt32(_length, 0);
if (header.header_length != (UInt32)MIDI_EVENT_TYPES.HEADER_CHUNK_SIZE)
{
throw new Exception("wrong header chunk size");
}
}
// format
{
byte[] _format = new byte[2];
inFile.Read(_format, 0, 2);
Array.Reverse(_format);
header.format = BitConverter.ToUInt16(_format, 0);
}
// num_of_tracks
{
byte[] _num_of_tracks = new byte[2];
inFile.Read(_num_of_tracks, 0, 2);
Array.Reverse(_num_of_tracks);
header.number_of_tracks = BitConverter.ToUInt16(_num_of_tracks, 0);
}
// division
{
byte[] _division = new byte[2];
inFile.Read(_division, 0, 2);
Array.Reverse(_division);
header.division = BitConverter.ToUInt16(_division, 0);
}
return(header);
}
public void ReadMIDIFile(string path)
{
Debug.Log(path);
this.midiFile = File.OpenRead(path);
this.header = ParseHeader(midiFile);
this.tracks = new List <MIDITrack>();
this.currentNotes = new Dictionary <uint, MIDINote>();
for (int i = 0; i < header.number_of_tracks; i++)
{
MIDITrack track = ParseTrack(midiFile);
this.tracks.Add(track);
}
}
MIDIHeader ParseHeader(FileStream inFile)
{
MIDIHeader header = new MIDIHeader ();
// MThd
{
byte[] _mthd = new byte[4];
inFile.Read(_mthd, 0, 4);
Array.Reverse(_mthd);
header.MThd = BitConverter.ToUInt32(_mthd, 0);
if(header.MThd != (UInt32)MIDI_EVENT_TYPES.HEADER_CHUNK_ID){
throw new Exception("wrong midi header");
}
}
//header length;
{
byte[] _length = new byte[4];
inFile.Read(_length, 0, 4);
Array.Reverse(_length);
header.header_length = BitConverter.ToUInt32(_length, 0);
if(header.header_length != (UInt32)MIDI_EVENT_TYPES.HEADER_CHUNK_SIZE){
throw new Exception("wrong header chunk size");
}
}
// format
{
byte[] _format = new byte[2];
inFile.Read(_format, 0, 2);
Array.Reverse(_format);
header.format = BitConverter.ToUInt16(_format, 0);
}
// num_of_tracks
{
byte[] _num_of_tracks = new byte[2];
inFile.Read(_num_of_tracks, 0, 2);
Array.Reverse(_num_of_tracks);
header.number_of_tracks = BitConverter.ToUInt16(_num_of_tracks, 0);
}
// division
{
byte[] _division = new byte[2];
inFile.Read(_division, 0, 2);
Array.Reverse(_division);
header.division = BitConverter.ToUInt16(_division, 0);
}
return header;
}
public void ReadMIDIFile(string path)
{
Debug.Log(path);
this.midiFile = File.OpenRead(path);
this.header = ParseHeader(midiFile);
this.tracks = new List<MIDITrack>();
this.currentNotes = new Dictionary<uint, MIDINote>();
for(int i = 0; i < header.number_of_tracks; i++){
MIDITrack track = ParseTrack(midiFile);
this.tracks.Add(track);
}
}
