internal CtfClockDescriptor(CtfPropertyBag bag)
{
Debug.Assert(bag != null);
this.Name = bag.GetString("name");
if (bag.ContainsKey("uuid"))
{
string uuid = bag.GetString("uuid").Replace("\"", string.Empty);
if (!Guid.TryParse(uuid, out var id))
{
throw new ArgumentException($"Unable to parse the uuid value: {bag.GetString("uuid")}.");
}
this.Uuid = id;
}
this.Description = bag.GetString("description");
// According to CTF specification 1.8.2 section 8, if the 'freq' field is not present,
// it will default to 1 ns.
this.Frequency = bag.ContainsKey("freq") ? bag.GetUlong("freq") : (ulong)1000000000;
if (bag.ContainsKey("offset"))
{
this.Offset = bag.GetUlong("offset");
}
else if (bag.ContainsKey("offset_s"))
{
// todo:this might not be the best approach from an overflow perspective.
// leaving for now until we have reason to change it
ulong offsetInSeconds = bag.GetUlong("offset_s");
this.Offset = offsetInSeconds * this.Frequency;
}
if (bag.ContainsKey("precision"))
{
this.Precision = bag.GetUlong("precision");
}
if (bag.ContainsKey("absolute"))
{
this.Absolute = bag.GetBoolean("absolute");
}
}
