/// <summary>
/// Reads a midievent from a stream
/// </summary>
/// <param name="from">stream where to read from</param>
/// <param name="to">list where to read</param>
/// <returns>number of bytes read or -1 if unknown event type</returns>
public static int Read(AudioStream from, List <TrackEvent> to)
{
int index = to.Count - 1;
int eventSize = 0;
// midi events are detected with high bits (first four)
switch (to[index].Prefix >> 4)
{
case (byte)MidiEvent.MidiEventType.Controller:
eventSize += ControllerEvent.Read(from, to);
break;
case (byte)MidiEvent.MidiEventType.NoteOn:
case (byte)MidiEvent.MidiEventType.NoteOff:
eventSize += NoteEvent.Read(from, to);
break;
case (byte)MidiEvent.MidiEventType.Instrument:
case (byte)MidiEvent.MidiEventType.ChannelAT:
from.Skip(1);
to.RemoveAt(index);
return(1);
case (byte)MidiEvent.MidiEventType.PolyphonicAT:
case (byte)MidiEvent.MidiEventType.PitchBend:
from.Skip(2);
to.RemoveAt(index);
return(2);
default:
Console.WriteLine("Unknown midi event type 0x{0}", BitConverter.ToString(new byte[] { to[index].Prefix }));
return(-1);
}
return(eventSize);
}
/// <summary>
/// Reads a controllerevent from the filestream
/// </summary>
/// <param name="from">stream where to read from</param>
/// <param name="to">where to read event</param>
/// <returns>number of bytes read</returns>
public new static int Read(AudioStream from, List <TrackEvent> to)
{
int index = to.Count - 1;
ControllerEvent c = new ControllerEvent();
c.CopyFrom(to[index]);
int eventSize = from.Read(c, skipFields: new string[] { "Timing", "Prefix", "AbsoluteTiming" });
to[index] = c;
return(eventSize);
}
