/// <summary>
/// Reads a tempoevent into a list of trackevents
/// </summary>
/// <param name="from">audiostream to read from</param>
/// <param name="to">list of trackevents where to read</param>
/// <returns>number of bytes read from the stream</returns>
public static int Read(AudioStream from, TrackEvent original, List <TempoEvent> to)
{
int eventSize = 0;
TempoEvent t = new TempoEvent();
t.CopyFrom(original);
eventSize += from.Read(t, skipFields: new string[] { "Timing", "Prefix", "Size", "Type", "AbsoluteTiming" });
#if TEMPODEBUG
this.Debug();
#endif
to.Add(t);
return(eventSize);
}
public byte[] Size; //VLV
/// <summary>
/// Reads a metaevent from the filestream
/// </summary>
/// <param name="from">stream where to read from</param>
/// <param name="allevents">list of all trackevents</param>
/// <param name="tempoevents">list of tempoevents</param>
/// <param name="tsigevents">list of timesignatureevents</param>
/// <returns>number of bytes read / skipped</returns>
public new static int Read(AudioStream from, TrackChunk track, List <TempoEvent> tempoevents, List <TimeSignatureEvent> tsigevents)
{
// index is always last one in list
int index = track.Events.Count - 1;
// new meta event with the prefix and timing
MetaEvent m = new MetaEvent();
m.CopyFrom(track.Events[index]);
// read new data into the meta event class, Size is a VLV and skip over Timing and Prefix
int eventSize = from.Read(m, vlv: "Size", skipFields: new string[] { "Timing", "Prefix", "AbsoluteTiming" });
// read tempo or time signature events
switch (m.Type)
{
case (byte)MetaEvent.MetaEventType.Tempo:
eventSize += TempoEvent.Read(from, track.Events[index], tempoevents);
track.Events.RemoveAt(index);
return(eventSize);
case (byte)MetaEvent.MetaEventType.TimeSignature:
eventSize += TimeSignatureEvent.Read(from, track.Events[index], tsigevents);
track.Events.RemoveAt(index);
return(eventSize);
}
// skip the meta event data
int skip = ByteConverter.ToInt(m.Size);
from.Skip(skip);
// remove the event since we do not need it
track.Events.RemoveAt(index);
#if (METADEBUG)
this.Debug();
Console.WriteLine("Bytes skipped: {0}", skip);
#endif
return(eventSize + skip);
}
