void BufferedSnapshotRead(object sender, BufferReceivedEventArgs args)
{
byte[] buffer = args.Data.Buffer;
int offset = 0;
if (args.Data.Offset != CurrentPos.Position)
{
offset = 0x10;
}
Count--;
WeatherSnapshot snapshot = new WeatherSnapshot(buffer, offset);
SnapshotDate -= new TimeSpan(0, snapshot.Interval, 0);
snapshot.Timestamp = SnapshotDate;
if (Count <= 0 || snapshot.Timestamp <= LimitDate)
{
// Finished reading
this.BufferReceived -= BufferedSnapshotRead;
device.BufferReceived -= HandleBufferReceived;
OnAllSnapshotsRead(newSnapshots);
newSnapshots.Clear();
}
else
{
newSnapshots.Add(snapshot);
GetBlock(--CurrentPos);
}
}
void ActiveSnapshotRead(object sender, BufferReceivedEventArgs args)
{
this.BufferReceived -= ActiveSnapshotRead;
byte[] buffer = args.Data.Buffer;
int offset = 0;
if (args.Data.Offset != CurrentPos.Position)
{
offset = 0x10;
}
int delay = buffer[offset];
SnapshotDate -= new TimeSpan(0, delay, 0);
if (SnapshotDate < LimitDate)
{
// TODO: Handle wrong LimitDate
}
else
{
CurrentPos--;
this.BufferReceived += BufferedSnapshotRead;
GetBlock(CurrentPos);
}
}
/// <summary>
/// Handle the received global data
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
void GlobalBufferRead(object sender, BufferReceivedEventArgs args)
{
this.BufferReceived -= GlobalBufferRead;
byte[] globalBuffer = args.Data.Buffer;
Count = ToUShort(globalBuffer, DATA_COUNT) - 1; // The active buffer is also in Count
SnapshotDate = toDateTime(globalBuffer, DATE_TIME);
ushort pos = ToUShort(globalBuffer, CURRENT_POS);
CurrentPos = new BufferPos(pos);
CurrentBuffer = null;
this.BufferReceived += ActiveSnapshotRead;
GetBlock(CurrentPos);
}
void HandleBufferReceived(object sender, BufferReceivedEventArgs args)
{
CurrentBuffer = WS4000Buffer.Clone(args.Data);
OnBufferReceived(CurrentBuffer);
}