public List <byte> createMetaBytes()
{
List <byte> data = new List <byte>();
if (type.Equals("sequence_number"))
{
data.Add((byte)(number >> 8));
data.Add((byte)(number & 0xff));
}
if (type.Equals("text") || type.Equals("copyright") || type.Equals("lyrics") || type.Equals("marker") || type.Equals("cue_marker"))
{
if (text == null)
{
text = "";
}
data.AddRange(MidiExport.ascii.GetBytes(text));
}
if (type.Equals("track_name") || type.Equals("instrument_name") || type.Equals("device_name"))
{
data.AddRange(MidiExport.ascii.GetBytes(name));
}
if (type.Equals("channel_prefix"))
{
data.Add((byte)channel);
}
if (type.Equals("midi_port"))
{
data.Add((byte)port);
}
if (type.Equals("set_tempo"))
{
//return [tempo >> 16, tempo >> 8 & 0xff, tempo & 0xff]
data.Add((byte)(tempo >> 16));
data.Add((byte)((tempo >> 8) & 0xff));
data.Add((byte)(tempo & 0xff));
}
if (type.Equals("time_signature"))
{
data.Add((byte)numerator);
data.Add((byte)Math.Log(denominator, 2));
data.Add((byte)clocks_per_click);
data.Add((byte)notated_32nd_notes_per_beat);
}
if (type.Equals("key_signature"))
{
data.Add((byte)(key & 0xff));
data.Add(is_major ? (byte)0x00 : (byte)0x01);
}
int dataLength = data.Count;
data.InsertRange(0, MidiExport.encodeVariableInt(dataLength));
data.Insert(0, code);
data.Insert(0, 0xff);
return(data);
}
public List <byte> createBytes()
{
List <byte> data = new List <byte>();
byte runningStatusByte = 0x00;
bool statusByteSet = false;
foreach (MidiMessage message in messages)
{
if (message.time < 0)
{
message.time = 0;
}
data.AddRange(MidiExport.encodeVariableInt(message.time));
if (message.type.Equals("sysex"))
{
statusByteSet = false;
data.Add(0xf0);
data.AddRange(MidiExport.encodeVariableInt(message.data.Length + 1));
data.AddRange(message.data);
data.Add(0xf7);
}
else
{
List <byte> raw = new List <byte>();
raw = message.createBytes();
byte temp = raw[0];
if (statusByteSet && !message.is_meta && raw[0] < 0xf0 && raw[0] == runningStatusByte)
{
raw.RemoveAt(0);
data.AddRange(raw);
}
else
{
data.AddRange(raw);
}
runningStatusByte = temp;
statusByteSet = true;
}
}
return(MidiExport.writeChunk("MTrk", data));
}
