public async Task <IProducer <PictureFrame> > Start(CancellationToken cts)
{
var jpegConverter = new OiUdpStreamToJpegBlock();
await jpegConverter.TryStart();
var converterTask = Task.Run(async() =>
{
try
{
while (await this.receiver.Reader.WaitToReadAsync() && !cts.IsCancellationRequested)
{
if (this.receiver.Reader.TryRead(out var frame) && frame != null)
{
await jpegConverter.Continue(frame);
}
}
}
catch (Exception)
{
throw;
}
}, cts);
return(jpegConverter);
}
public async Task Continue(byte[] t = null)
{
if (t != null)
{
lock (this.SortedSet)
{
var fn = OiUdpStreamToJpegBlock.FrameNumer(t);
this.SortedSet.Add(fn, t);
if (this.SortedSet.Count > this.Treshold)
{
this.SortedSet = new Dictionary <short, Byte[]>(this.SortedSet.TakeLast(this.Treshold));
var minKey = this.SortedSet.Keys.Min();
var f = this.SortedSet[minKey];
if (f != null)
{
this.SortedSet.Remove(minKey);
this.Writer.TryWrite(f);
}
}
}
}
}
